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T752_4C _210×280 - 01

05/2022

大会長挨拶

6 月の札幌は，穏やかな日差しと新緑で最高の季節を迎えます．この度，第 41 回日本接着歯学会
学術大会と国際接着歯学会（IAD2022@Sapporo）を北海道大学学術交流会館で開催させていただく運びとなりました．
世界的なコロナ禍の影響によって学会の開催もすっかりオンライン開催が定着しましたが，ようやく社会がポストコロナに少しずつ動き出しつつあります．一方，世界的にはコロナ感染者が増加している地域もあり，日本への渡航も困難な状況が続いています．本大会は国内演者については対面での講演，海外の演者については対面あるいはオンラインでの講演を予定しております．
本大会のメインテーマを「接着歯学 2022

変革と挑戦」とさせていただきました．日本接着歯学会は，研究者，臨床家，メーカーの方々などが一堂に会する大変ユニークな学会であり，学術的な変革と挑戦は本学会の中心を成すものです．一方，今後の学会の発展を見据えた国際性や社会的な役割
においても変革と挑戦を続ける必要があります．
是非多くの皆様にご参加いただき，6 月の札幌でお会いできますことを強く祈念しております．
第 41 回日本接着歯学会学術大会 大会長
朝日大学歯学部口腔機能修復学講座
歯科保存学分野歯冠修復学 教授
二階堂 徹
国際接着歯学会（IAD2022@Sapporo）大会長
北海道大学大学院歯学研究院
歯科保存学教室 教授
佐野 英彦

Presidents’Greeting

The Joint Meeting of 41st Annual Meeting of the Japanese Society for Adhesive Dentistry and
IAD2022@Sapporo will be held at the Hokkaido University Conference Hall, from Friday, June 3, to
Sunday, June 5, 2022. Although we cannot predict how COVID-19 will shift and change in the near
future, we are aiming to hold the meeting in a face-to-face manner, or a hybrid format with opportunities to welcome on-site and online. We are also going to take every possible measure to preventthe spread of the virus during the meeting.
The theme as translated from the original Japanese is“Adhesive Dentistry 2022 Innovation andChallenge”. The concept is that the unique conference where researchers, clinicians, and manufacturers are put together seeks creative research results, which should be derived from the concept
of“Innovation and Challenge”, as well as the global contribution of scientific outcome of our society.
We are looking forward to meeting many of you in Sapporo in June 2022 in the“new normal”ofscientific meetings in the“era of coexisting with the SARS-CoV-2”.

Hidehiko Sano
The International Congress on Adhesive Dentistry
Congress President
Department of Restorative Dentistry, Faculty of Dental Medicine, Hokkaido University
Toru Nikaido
The 41st Annual meeting of Japan Society for Adhesive Dentistry
Congress President
Department of Opertive Dentistry, Division of Oral Functional Science and Rehabilitation, Asahi
University School of Dentistry

The IAD2022@Sapporo and The 41st JSAD Time Schedule…Japanese only available
Fri d a y , J u n e 3 , 2 0 2 2
会場名

8:00

9:00

10:00

11:00

12:00

13:00

14:00

1st Floor
En t ra n c e L ob b y

15:00

16:00

17:00

18:00

19:00

20:00

21:00

Registration

2nd FloorA u d i t ori u m

Opening
Ceremony

1st Floor
S m a l l A u d i t ori u m

Memorial
Ceremony

InvitedLecture 1

InvitedLecture 2

InvitedLecture 3

IAD
International
meeting

Satellite Venue

1st Floor
1 s t M e e t i n g room

Poster Presentation
Editorial
Board

1st Floor
2 n d M e e t i n g room
1st & 2nd Floor
H a l l & F oy e r

Exhibition

S a t u rd a y , J u n e 4 , 2 0 2 2
会場名

8:00

9:00

10:00

11:00

1st Floor
En t ra n c e L ob b y

12:00

13:00

14:00

15:00

16:00

17:00

18:00

19:00

20:00

21:00

17:00

18:00

19:00

20:00

21:00

Registration
InvitedLecture 4

2nd FloorA u d i t ori u m
1st Floor
S m a l l A u d i t ori u mInvitedLecture 5

Specialist
Certification
WorkshopSpecialLecture2

SpecialLecture 1

Satellite Venue

Satellite Venue

1st Floor
1 s t M e e t i n g room

Poster Presentation

1st & 2nd Floor
H a l l & F oy e r

Exhibition

S unda y , June 5, 2022
会場名
1st Floor
En t ra n c e L ob b y
2nd FloorA u d i t ori u m

8:00

9:00

10:00

12:00

13:00

14:00

15:00

Registration
InvitedLecture 6

Closing
Ceremony

Educational
Lecture1st Floor
S m a l l A u d i t ori u mSatellite Venue

1st Floor
1 s t M e e t i n g room

Poster Presentation

Discussion

AwardsCommittee

1st Floor
2 n d M e e t i n g room
1st Floor
3 rd M e e t i n g room
1st & 2nd Floor
H a l l & F oy e r

11:00

Examination
Exhibition

16:00

■ Map Access in Hokkaido University Conference Hall ■Getting Here:I’m at New Chitose Airport!
Train:
We strongly recommend catching the 40 minute JR Rapid Airport Line from the airport to Sapporo Station
which runs every 15 minutes.
Fare: Adult 1,070 yen/Child 530 yen
Bus:An express bus, known as the Chuo Bus/Hokuto Kotsu Bus also departs from New Chitose Airport boundfor Sapporo station and takes approximately 70 minutes.
Fare: Adult 1,030 yen/Child 520 yen

I’m at Sapporo Station!
Walk (7 mins):
After arriving at Sapporo station, it is a short walk to the main gate of the campus. Upon disembarking
the train, aim for the west ticket gates and then take the north exit out of the station. Walk down thestairs, cross the pedestrian crossing and veer to the right of the Sunkus Convenience Store. Walk straight,
passing the North Pacific Bank on your left, and continue for 4 minutes until you reach an intersection witha Mos Burger on the right and a car park on your left. This is the North 9, West 3 intersection. Turn left
here and walk straight to the Main Gate of the campus.
Taxi (5 mins):
If you have luggage or are due to arrive on a snowy or rainy day, we advise catching a taxi from thestation to the university. A taxi fare usually starts at and should not be much more than around 700 yen
due to the close proximity of the university.
Subway (5 mins + walk):
Take the Namboku Subway Line heading towards Asabu at Sapporo Station and get off at the next stop,
Kita 12-jo. It’s about a 10 minute walk from there to the university. Once you exit the station, follow thesigns to the university. Subway fares are 200 yen for a single trip.

■ Floor Map ■■ General Information ■Date: June 3 – 5, 2022
Venue: Hokkaido University Conference Hall
Address: 5-8-1, Kita 8 jonishi, KitaWard, Sapporo, Hokkaido 060-0808 JAPAN
Tel: +81-11-706-2042 (011-706-2042)
Official Language
English.
(Only Japanese is used in the 41st JSAD program (Special Lecture 1～2, Educational Lecture (JSAD))
Registration and General Information DeskRegistration for the Congress will take place at the following time and places.
Entrance Lobby of Hokkaido University Conference Hall on the 1st floor
		 June 3 Friday		

12:30 – 17:00

		 June 4 Saturday		  8:30 – 15:10
		 June 5 Sunday		  8:30 – 10:00
Fees
Dentist / Others		

30,000 JPY

Graduate Student		

10,000 JPY

Information Board
information for all participants will be posted on this board which is located close to the registrationdesk. Participants are requested to check this board for important information.
Message Board for participants
A message board is available to allow participants to leave message for each other.
About the lifelong training of the Japan Dental Association*Those who come to the venue
You will be given the QR code of the application form at the general reception.
*Those who participate online
We will post the QR code of the application form on the congress website.
Please access the application form from the QR code, fill in the information and apply.
About IAD Educational Lecture
Many lecture videos will be released in the IAD Educational Lecture.
Abstracts and lecture videos will be posted on the congress website.

Others* Cloakroom reception is available at the following locations and times.
5th meeting room of Hokkaido University Conference Hall on the 1st floor			June 3 Friday		

12:30 – 18:10

			June 4 Saturday	  8:30 – 16:20

			June 5 Sunday		  8:30 – 12:20* Video and photography inside the venue is prohibited.
* If you have any questions, please follow the chair's instructions and use the designated microphonebriefly.
* Please refrain from eating and drinking in the auditorium and the 1st meeting room except forhydration.
Program

Venue program

Online program● Invited Lecture 1 ～ 6 (IAD)● Special Lecture 1・2 (JSAD, only in Japanese)● Educational Lecture (JSAD, only in Japanese)〇〇(Live streaming)● Specialist Certification Workshop (JSAD, only in Japanese)〇〇(Live streaming ＋
On-demand delivery)● Educational Lecture (IAD)－〇(On-demand delivery)● Poster Presentation (JSAD)〇〇(On-demand delivery)● Poster Presentation (IAD)－〇(On-demand delivery)■ Related Meeting ■IAD International Meeting
Date: June 3 Friday
Time: 17:00 – 18:00
Place: Hokkaido University Conference Hall 2nd Floor Auditorium

■ Exhibition ■The exhibition will open at the following hours at Hokkaido University Conference Hall 1st Floor
Entrance Hall and 2nd Floor Foyer.
		June 3 Friday		

13:30 – 18:00

		June 4 Saturday	  9:00 – 16:10

		June 5 Sunday		  9:00 – 11:00

List of Exhibitors
3M Japan LimitedDentsply Sirona K.K.
DENTAL ARROW Co., Ltd.
GC Corporation
J.MORITA Corporation
Kuraray Noritake Dental Inc.
MORIMURA DENTAL COMPANYSHOFU Inc.
SUN MEDICAL Co., Ltd.
Tokuyama Dental Corporation■ Acknowledgement ■The organizing Committee is very grateful to all contributors for their generous support.
GOLD SPONSOR
GC Corporation
Kuraray Noritake Dental Inc.
SHOFU Inc.
SUN MEDICAL Co., Ltd.
Tokuyama Dental Corporation
SILVER SPONSOR
MORIMURA DENTAL COMPANYOTHER SPONSOR
3M Japan LimitedDentsply Sirona K.K.
DENTAL ARROW Co., Ltd.
J.MORITA Corporation

■ Guideline for Poster presentations ■1) Presentation at“The 41st annual meeting of Japan Society for Adhesive Dentistry”Presentations
will be given at the local venue and by e-poster. (PDF data will be submitted in advance)[Poster posting / announcement at the local venue]
・Please attach the poster after confirming the arrival at the poster presentation reception desk.
・Be sure to attach / remove the poster within the designated time.
[Poster Presentation Schedule]
JSAD Presenters
Reception Counter

June 3 (Fri) 12:30 – 13:30
Conference Hall 1F 1st Meeting room

Set-up Posters

June 3 (Fri) 12:30 – 13:30

Viewing Time

June 3 (Fri) 13:30 – 18:00
June 4 (Sat)	  9:00 – 16:10
June 5 (Sun)	  9:00 – 11:00

Discussion Time

June 5 (Sun) 11:00 – 11:50

Remove Posters

June 5 (Sun) 11:50 – 12:30* Posters left after the removal time will be disposed of by the congress staff.

[Poster size]
・The board will be used vertically. Dimensions of theboard are 86 cm (width) × 176 cm (hight).
・Presentation number, you receive in advance will be
posted in the top left corner of your poster.
・Please prepare your own push pins (with no use of
double-sided tape).
[Poster discussion]
All delegates at the meeting have the opportunity tomake comments, or ask questions during the discussion
time. Poster presenters, please be sure to wait before theposter during the discussion time.

■ Scientific Program ■Invited Lectures (IL)（招待講演）……………………………………………………………………………… 37
Special Lectures (SL)（特別講演）……………………………………………………………………………… 43
Educational Lecture (EL)（教育講演）………………………………………………………………………… 45
Specialist Certification Workshop (SCW)（専門医認定研修会）… ………………………………………… 46
JSAD Poster Presentations (JP)（日本接着歯学会

ポスター発表）……………………………………… 48

IAD Poster Presentations (IP)（国際接着歯学会

ポスター発表）………………………………………… 55

複写および転載される方に「一般社団法人日本接着歯学会」は，一般社団法人学術著作権協会（学著協）に複写複製および転載複製に関する権利委託していますので，本誌に掲載された著作物を複写あるいは転載したい方は，学著協が提供している複製利用許諾システムもしくは転載許諾システムを通じて申請してください．
なお，本学会の会員（賛助会員も含む）が転載利用の申請をされる場合には，本学会事務局に直接お問い
合わせください．利用される際には予め申請いただくようお願い致します．
権利委託先：一般社団法人学術著作権協会
https://www.jaacc.org/

また，アメリカ合衆国において本書を複写したい場合は，次の団体に連絡して下さい．
Copyright Clearance Center, Inc.
222 Rosewood Drive,
Danvers, MA 01923 USA
Phone：1–978–750–8400
Fax：1–978–646–8600

Notice for photocopying and reusing
Japan Society for Adhesive Dentistry authorized Japan Academic Association for Copyright Clearance(JAC) to license our reproduction rights and reuse rights of copyrighted works.
If you wish to obtain permissions of these rights in the countries or regions outside Japan, please refer tothe home page of JAC (http://www.jaacc.org/en/) and confirm appropriate organizations.
When you reuse the contents for non-commercial use, however, please contact us directly to obtain thepermission for the reuse content in advance.
Users in USA
Copyright Clearance Center, Inc.
222 Rosewood Drive,
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Phone：1–978–750–8400
Fax：1–978–646–8600

The 41st Annual Meeting of Japan Society for Adhesive Dentistry,
The International Congress on Adhesive Dentistry (IAD2022@Sapporo)
ProgramDay 1 6/3 (Fri)
Venue: 2nd floor Auditorium
Satellite Venue: 1st floor Small Auditorium
13：20 ～ 13：30 Opening Ceremony: President of the 41st JSAD
					
President of the IAD		
13：30 ～ 13：50

Memorial Ceremony

Toru Nikaido
Hidehiko Sano

In memoriam: Nobuo Nakabayashi

14：00 ～ 14：45 Invited Lecture 1 Chair: Yasushi Shimada (Tokyo Medical and Dental University)「Creating a future of dentistry」
Junji Tagami（Quartz Dental Clinic）
14：45 ～ 15：00

Break Time

15：00 ～ 15：45 Invited Lecture 2 Chair: Monica Yamauti (Hokkaido University)「Sustainable biomimetic approaches for restoration of vital vs devital teeth」
Sema Belli（Selcuk University, Republic of Turkey）
15：45 ～ 16：00

Break Time

16：00 ～ 16：45 Invited Lecture 3 Chair: Satoshi Inoue (Hokkaido University)「Key features modern universal adhesives need for durable bonding」
	Bart Van Meerbeek（KU Leuven, Belgium）
16：45 ～ 17：00

Break Time

17：00 ～ 18：00

IAD International Meeting13：30 ～ 18：00

Poster Presentation

Venue: 1st floor 1st Meeting Room
※Only JSAD Poster Presentations can be viewed and discussed at the venue.
Set-up Posters: 6/3 (Fri)
12 : 30 ～ 13 : 30
Viewing Time:
6/3 (Fri)
13 : 30 ～ 18 : 00
6/4 (Sat)
9 : 00 ～ 16 : 10
6/5 (Sun)
9 : 00 ～ 11 : 00
Discussion Time: 6/5 (Sun)11 : 00 ～ 11 : 50
Remove Posters: 6/5 (Sun)11 : 50 ～ 12: 30
JSAD: You can viewed at the venue and online.
J-1．
	Wet-dentin bonding state of recent all-in-one adhesive systems under in vitro pulpalpressure conditions
Department of Adhesive Dentistry, School of Life Dentistry at Tokyo, The Nippon Dental
University
Komoto M, Sugiyama R, Maruyama C, Koshida S, Nara Y
J-2． Dentin bonding durability of four different self-etch adhesives1) Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation,
School of Dentistry, Asahi University2) Division of Biomaterials, Prosthodontic Dentistry Department, Faculty of Dentistry, King
Salman International University, El Tur, South Sinai, Egypt
Kitahara S1), Takagaki T1), Shimizu S1), Okamura S1), Ito R1), Muramatsu R1), Abdou A2),
Nikaido T1)
J-3．	Evaluation of the effects of HEMA and MDP formulation on 2-step bonding agent
GC Corporation
Shoji T, Yamashita M, Hirano K, Fusejima F
J-4．	Effect of simulated pulp pressure on universal adhesives bond strength
Department of Restorative Dentistry, Faculty of Dental Medicine, Hokkaido University
Li Y, Liu Y, Sakata T, Alam A, Md Refat Readul Islam, Tanaka T, Ikeda T, Hoshika S,
Matsumoto M, Kawamoto C, Yamauti M, Sano H
J-5.	Preliminary study for development of new micro tensile bond strength testing
Department of Restorative Dentistry, Faculty of Dental Medicine and Graduate School of
Dental Medicine, Hokkaido University, Sapporo, Japan
Yamashita K, Toida Y, Matsumoto M, Hoshika S, Kawamoto C, Ikeda T, Tanaka T, Yamauti M,
Sano H

J-6.	Effect of various surface treatments on tensile bond strength to lithium disilicate glass
ceramics
1) Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation,
School of Dentistry, Asahi University2) Division of Biomaterials, Prosthodontic Dentistry Department, Faculty of Dentistry, King
Salman International University, El Tur, South Sinai, Egypt
Shimizu S1), Takagaki T1), Kitahara S1), Kusakabe S1), Abdou A2), Nikaido T1)

J-7.	Alkali and acid treatments for removing salivary contamination on feldspar porcelain
Division of Biomaterials, Kyushu Dental University
Komagata Y, Ikeda H, Nagamatsu Y, Shimizu H
J-8.	Effects of ceramic primers on the bonding of resin cement to air-abraded zirconia withalumina or silica-coated alumina1) Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki
University
2)
Clinic of Fixed Prosthodontics, Nagasaki University Hospital
Tsuda F1), Yoshida K2)
J-9.	Effect of building direction on shear bond strength of additive manufacturing zirconia
1) Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences,
Meikai University School of Dentistry2)
Department of Dental Materials, The Nippon Dental University, School of Life Dentistryat Tokyo
Miura S1), Shinya A2), Miura D2), Ishida Y2), Fujisawa M1)
J-10. Effects of primers on bond strength between titanium and self-adhesive resin cement
Department of Dental Materials Science, Division of Oral Functional Sciences andRehabilitation, Asahi University School of Dentistry
Okuyama K, Tamaki Y
J-11.	Shear bond strength of resin cement to FDM-formed PEEK and the effect of fabrication
direction
Dental Materials Science, School of Life Dentistry at Tokyo, The Nippon Dental University
Miura D, Ishida Y, Aoki H, Shinya A
J-12.	Evaluation of wear resistance of resin cements
GC Corporation
Sato K, Hirano K, Fusejima F
J-13. Development and validation of new pressure variable chairside sandblaster1) Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation,
School of Dentistry, Asahi University
2)
Morita Tokyo Mfg. Co., Ltd. Third Technology Development Department
Okamura S1), Takagaki T1), Kitahara S1), Shimizu S1), Ito R1), Idono T1), Arakawa Y2),
Nikaido T1)
J-14. The effect of blood on the hardening of pulp capping agents
Department of Restorative Dentistry and Endodontology, Kagoshima University Graduate
School of Medical and Dental Sciences
Hoshika T, Katsumata A, Nishitani Y

IAD: You can be viewed only online.
I-1．	Nondestructive observation of adhesively cemented interface between dentin and indirectcomposite resin disks using a novel terahertz pulsed imaging technique1) 
Department of Regenerative Dental Medicine, Tokushima University Graduate School of
Biomedical Sciences
2)
Institute of Post-LED Photonics, Tokushima University
Yonekura K1), Ida Y1), Tokisane Y2), Yano T2), Iuchi T1), Yasui T2), Hosaka K1)
I-2． Clinical performance of mono-block direct composite crown restorations
1)
Tashiro Dental Clinic, 2) Habara Dental Clinic, 3) Quartz Dental Clinic4) Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation,
Asahi University School of Dentistry5)Department of Regenerative Dental Medicine, Tokushima University Graduate School of
Biomedical Sciences6) epartment of Cariology and Operative Dentistry, Graduate School of Medical and Dental
D
Sciences, Tokyo Medical and Dental University (TMDU)
Tashiro H 1), Miki H 2), Tagami J 3,6), Takagaki T 4), Hosaka K 5), Sato T 6), Hatayama T 6),
Shimada Y6)
I-3．	Effect of Silver Diammine fluoride on bond strength of new universal adhesives
Department of Restorative Dentistry, Faculty of dental Medicine, Hokkaido University
Papichaya I, Yuan Y, Ikeda T, Kawamoto C, Tanaka T, Hoshika S, Matsumoto M, Sano H
I-4．	Are HEMA and 10-MDP necessary in the bonding agent of a 2-SEA?
1)
Department of Regenerative Dental Medicine, Tokushima University Graduate School of
Biomedical Sciences2)
Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate Schoolof Medical and Dental Sciences, Tokyo Medical and Dental University3)Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University4)Department of Biomaterials and Bioengineering, Tokushima University Graduate Schoolof Biomedical Sciences
Iuchi T1), Yonekura K1), Ida Y1), Motoyama Y2), Ikeda M3), Hamada K4), Nakajima M2),
Hosaka K1)
I-5．	 Polymerization Behavior of Composites at Top/Bottom of Cavity using Different Light Cure1)
Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University
2)
Department of Restorative Dentistry, School of Dentistry, University of Washington
Yoshikawa T1), Sadr A2), Shimada Y1)
I-6．	Effect of new resin based dentin desensitizer on permeability for the treatment of dentin
hypersensitivity
Department of Operative Dentistry, Osaka Dental University
Yasuo K, Morikawa Y, Iwasaki K, Ouchi S, Onda K, Suzuki K, Miyaji H, Hatsuoka Y,
Iwata N, Yoshikawa K, Yamamoto K

I-7．	Bond strength of resin composite to novel octyl-type silane coupling agent
1)
Department of Clinical Biomaterials, Kanagawa Dental University
2)
Materials & Surface Engineering Research Institute, Kanto Gakuin University
Nihei T1,2), Katayama Y1), Midono T1), Aoki K1), Yamaguchi H1), Ohashi K1)
I-8．	Shear bond strength to tooth structure of a new light-cured resin cement1)Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry
and Pharmaceutical Sciences.
2)
Occlusion and Removable Prosthodontics, Okayama University Hospital
Irie M1), Maruo Y2), Nishigawa G2), Matsumoto T1)
I-9．	The effect of deproteinizing pretreatment on bonding performance and acid resistance toeroded dentin
1) Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University, Japan2) 

Department of Regenerative Dental Medicine, Graduate School of Biomedical Sciences,
Tokushima University, Japan3)
Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University, JapanYi Yang1), Inoue G1), Hosaka K2), Ikeda M3), Shimada Y1)
I-10．	Mechanical properties of the newly-developed cavity lining/base material containing
mineral trioxide aggregate1)D epartment of Operative Dentistry, Endodontology, and Periodontology, School of
Dentistry, Matsumoto Dental University2)
Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto
Dental University
Nakamura K1), Wu Chia-Ying1,2), Kobayashi A1,2), Koike T1), Miyakuni A1), Kohda K1),
Komatsu S1), Komachiya M1), Abo H1), Kameyama A1,2)
I-11．	Influence of nanochitosan self-etch primers on the dentin surface and in proteolytic activity1) 
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University ofSão Paulo2)
Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São
Paulo
Pâmella Coelho Dias1), Gabriela Migotto Goering1), Isabela Barbosa Quero1),
Juliana Jendiroba Faraoni1), Francisco Wanderley Garcia de Paula e Silva2),
Regina Guenka Palma-Dibb1)
I-12．	Effect of operator experience on dentin bond strength of different adhesives
1)Department of Restorative Dentistry, Graduate School of Dental Medicine, Hokkaido
University, Sapporo, Japan
2)
Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan3) 
Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing,
China
Di Wu1), Kawamoto C1), Yamauti M1), Ito N2), Okazaki T2), Ye Yao1), Toyama A1),
Arefin Alam1), Fei Chen3), Hoshika S1), Matsumoto M1), Tanaka T1), Sano H1)

I-13．	Bonding performance of commercial and experimental self-adhesive resin composites todentinDepartment of Restorative Dentistry, Graduate School of Dental Medicine, Hokkaido
University
Ye Yao, Di Wu, Tanaka T, Ikeda T, Hoshika S, Matsumoto M, Kawamoto C,
Yamauti M, Sano H
I-14．	Observation of the cavity adaptation of a newly developed self-adhesive resin composite
by OCT1)
Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University (TMDU), Japan
2)
Center for Development of Advanced Medicine for Dental Diseases, National Center for
Geriatrics and Gerontology, Japan
Inoue G1), Sumi Y2), Shimada Y1)
I-15．	Shear Bond Strength of New Universal Bonding Agent with Bioactive Function
Research & Development Department, Sun Medical, Moriyama, Shiga, Japan
Takebe M, Inami C, Kamimoto Y
I-16．	Effectiveness of silane coupling agent incorporated in universal adhesive1)National Institute of Advanced Industrial Science and Technology (AIST), Health ResearchInstitute, Ka-gawa, Japan; Okayama University, Graduate School of Medicine, Dentistry
and Pharmaceutical Sciences, Department of Pathology & Experimental Medicine,
Okayama, Japan
2)
Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental
School, Okayama, Japan3)
Department of Prosthodontics, Okayama University Hospital4) Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido
University
Yoshihara K1), Nagaoka N2), Maruo Y3), Yoshida Y4)
I-17．	Effect of mold enclosure and chisel design on fatigue bond strength of adhesive systems
1)
D epartment of Restorative Dentistry, Oregon Health Science University School of
Dentistry2)
Department of General Dentistry, Creighton University School of Dentistry3)
Department of Operative Dentistry, University of Iowa College of Dentistry
Watanabe H1), Wayne W. Barkmeier2), Kawashima S1), Mark A. Latta2), Tsujimoto A3)
I-18．	Long-term bond durability of a newly developed 2-step universal adhesive in self-etch
mode
Department of Operative Dentistry, University of Iowa College of Dentistry
Tsujimoto A, Amira Elgreatly, Nathalia Restorepo-Kennedy, Erica C. Teixeira

I-19．	Polychromatic composite and resin infiltration restorations in the esthetic zone: A 5-year
clinical report1)Department of Restorative Dentistry, Oregon Health & Science University School of
Dentistry2)
Texas Tech University Health Sciences Center El Paso Woody L. Hunt School of Dental
Medicine3)
Department of Operative Dentistry, University of Iowa College of Dentistry
Kawashima S1), Watanabe H1), Carlos A. Jurado2), Tsujimoto A3)
I-20．	Evaluation of bonding performance of universal adhesives to enamel utilizing a newtechnique1)
Department of Stomatology, Beijing Tongren Hospital,Capital Medical University, Beijing,
China
2)Department of Restorative Dentistry, Graduate School of Dental Medicine, Hokkaido
University, Sapporo, Japan
Fei Chen1), Jiang Lin1), Di Wu2), Arefin Alam2), Yamauti M2), Sano H2)
I-21．	Minimally invasive multidisciplinary approach to a single discolored anterior tooth1)
Department of Operative Dentistry, University of Iowa College of Dentistry2) 
Department of Periodontics, National University of Rosario School of Dentistry3)Texas Tech University Health Sciences Center El Paso Woody L. Hunt School of Dental
Medicine
Natalia Restrepo-Kennedy1), Jose Villalobos-Tinoco2), Carlos A. Jurado3), Tsujimoto A1)
I-22．
	The potential of ZnO/CuO nanocomposite contain self-etching primer on bond dentin
bonding ability
1)Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation,
School of Dentistry, Health Sciences University of Hokkaido
2)
Department of Dental Materials Science, Asahi University School of Dentistry3) 
Department of Restorative Dentistry and Endodontology, Osaka University Graduate
School of Dentistry
Matsuda Y1), Altankhishig Bayarchimeg1), Okuyama K2), Yamamoto H3), Saito T1)
I-23．	Effect of antioxidant materials on enamel bond strength after bleaching
Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University
Graduate School of Dental Medicine
Yago R, Kawamoto C, Di Wu, Suzuki K, Hoshika S, Tanaka T, Yamauti M, Sano H

I-24．	Comparison of the bond strength of CAD/CAM inlay restorations with a specific cement1)Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University (TMDU), Japan
2)
Oral Diagnosis and General Dentistry, Tokyo Medical and Dental University (TMDU)
Hospital, Japan3)
Department of Gerodontology and Oral Rehabilitation, Graduate School of Medical and
Dental Sciences, Tokyo Medical and Dental University (TMDU), Japan4)
Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation,
School of Dentistry, Asahi University, Japan
5)
Quartz Dental Clinic, Japan
Takahashi R1), Uchiyama S1), Kanamori Y2), Rozan S1), Oda Y1), Sato T1), Shinagawa J1),
Inokoshi M3), Nikaido T4), Tagami J1,5), Shimada Y1)
I-25．
	Sintering distortion of FPDs milled from various zirconia disks: Influence of layered
structure and vertical milling area
Department of Fixed Prosthodontics, Tokyo Dental College
Hirano M, Nomoto S, Kawasaki T, Sakai T, Yotsuya M, Sekine H
I-26．	Morphological analysis of femtosecond laser irradiated lithium disilicate glass-ceramics
and highly translucent zirconia - A preliminary study1)

 epartment of Gerodontology and Oral Rehabilitation, Graduate School of Medical andD
Dental Sciences, Tokyo Medical and Dental University2)
N ational Institute of Advanced Industrial Science and Technology (AIST), HealthResearch Institute, Kagawa, Japan; Okayama University, Graduate School of Medicine,
Dentistry and Pharmaceutical Sciences, Department of Pathology & Experimental
Medicine
3)
National Institute of Advanced Industrial Science and Technology (AIST), ResearchInstitute for Advanced Electronics and Photonics
4)
Advanced Research Center for Oral and Craniofacial Sciences, Okayama University
Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Inokoshi M1), Yoshihara K2), Kakehata M3), Yashiro H3), Nagaoka N4), Tonprasong W1),
Xu K1), Minakuchi S1)
I-27．	Effects of alumina air-abrasion on the bond strength of ultraviolet polymerized resin to 3D
printed denture baseDivision of Removable Prosthodontics, Department of Oral Rehabilitation, Fukuoka Dental
College
Tanaka A, Kawaguchi T, Tsuzuki T
I-28．	Tensile bond strengths of different resin cement systems to poly-ether-ether-ketone (PEEK)
1)Division of Biomaterials, Department of Oral Functions, Kyushu Dental University2) Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu
Dental University
Hata K1,2), Komagata Y1), Nagamatsu Y1), Masaki C2), Hosokawa R2), Ikeda H1)

I-29．	Efficacy of sandblast surface-treatment on the bonding-improvement of metal-free CAD/
CAM restoratives
Department of Adhesive Dentistry, School of Life Dentistry at Tokyo, The Nippon Dental
University
Maseki T, Murata T, Nara Y
I-30．	Shear bond strength between highly translucent pre-sintered zirconia coated withfeldspathic porcelain and resin luting agent
1)
Department of Fixed Prosthodontics, Nihon University School of Dentistry2)
Division of Advanced Dental Treatment, Dental Research Center, Nihon University
School of Dentistry
Takata H1), Kubochi K1), Kimura F1), Matsushima K1), Matsumura H1), Komine F1,2)
I-31．	Effect of the multi-purpose primer and airborne particle abrasion on bond durability for casttitanium and gold alloy
1)

Department of Fixed Prosthodontics, Nihon University School of Dentistry
Division of Advanced Dental Treatment, Dental Research Center, Nihon University
School of Dentistry3)
Department of Dental Materials, Nihon University School of Dentistry4) Division of Biomaterials Science, Dental Research Center, Nihon University School of
Dentistry
Hiraba H1,2), Koizumi H3,4), Takehana K1), Mikami W1), Nogawa H1), Matsumura H1)
I-32．	Adhesion and mechanical properties of PEEK block by CAD/CAM system
1)
Department of Clinical Biomaterials, Kanagawa Dental University
2)
Department of Dental Biomaterials, Nihon University School of Dentistry at Matsudo
3)
Materials & Surface Engineering Research Institute, Kanto Gakuin University
Katayama Y1), Ohashi K1), Midono T1), Aoki K1), Yamaguchi H1), Nagata S2), Tanimoto Y2),
Nihei T1,3)
I-33．	Clinical Effectiveness of direct composite vs. zirconia resin-bonded fixed dental prostheses
1)Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University (TMDU)
2)
Tashiro Dental Clinic, 3) Habara Dental Clinic, 4) Otani Dental Clinic, 5) Suzuki Dental Clinic
6)
Total Dental Clinic Tokyo Aoi7) 
Department of Regenerative Dental Medicine, Tokushima University Graduate School of
Biomedical Sciences
8)
Quartz Dental Clinic
Sato T1), Tashiro H1,2), Miki H3), Otani K4), Nishimura M1,5), Takahashi M1,6), Hosaka K1,7),
Tagami J1,8), Shimada Y1)
I-34．	Study on adhesive durability the luting agents to zirconia-Appropriate concentration of acidic monomer1)
Department of Fixed Prosthodontics, Kanagawa Dental University
2)
Department of Clinical Biomaterials, Kanagawa Dental University
Tsunoi S1), Katayama Y2), Ohashi K2), Hoshi N1), Kimoto K1), Nihei T2)2) I-35．	Survival of the anterior mono-block direct composite crown1)
Habara Dental Clinic, 2) Tashiro Dental Clinic, 3) Quartz Dental Clinic
4)Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation,
Asahi University School of Dentistry5)Department of Regenerative Dental Medicine, Tokushima University Graduate School of
Biomedical Sciences6)Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental
Sciences, Tokyo Medical and Dental University (TMDU)
Miki H1), Tashiro H2), Tagami J3,6), Takagaki T4), Hosaka K5), Sato T6), Hatayama T6),
Shimada Y6)
I-36．
	Monolithic ultra-translucent multi layered zirconia restorations in the esthetic zone1)Minnesota Dental Research Center for Biomaterials and Biomechanics, University of
Minnesota School of Dentistry2)

Department of Prosthodontics, University of Iowa College of DentistryTexas Tech University Health Sciences Center El Paso Woody L. Hunt School of Dental
Medicine
4)
Department of Operative Dentistry, University of Iowa College of Dentistry
Nicholas G. Fischer1), Ahmad M. Mahrous2), Carlos A. Jurado3), Tsujimoto A4)
I-37．	Fracture Strength of Chair-side CAD/CAM Lithium Disilicate Crowns and Occlusal
Veneers with and without Margin1)
Texas Tech University Health Sciences Center El Paso Woody L. Hunt School of Dental
Medicine. El Paso, Texas, USA.
2)
The Ohio State University College of Dentistry. Columbus, Ohio, USA.
3)
University of Iowa College of Dentistry. Iowa City, Iowa, USA.
Carlos Alberto Jurado1), Damian Lee2), Tsujimoto A3)
I-38．	Diagnosis of occlusal and proximal caries using SS-OCT
1)
Minnesota Dental Research Center for Biomaterials and Biomechanics, University of
Minnesota School of Dentistry2)
Department of Prosthodontics, University of Iowa College of Dentistry3)Texas Tech University Health Sciences Center El Paso Woody L. Hunt School of Dental
Medicine
4)
Department of Operative Dentistry, University of Iowa College of Dentistry
Shimada Y1), Nakagawa H1), Tabata T1), Sato T1), Sadr Alireza2), Sumi Y3), Tagami J1)
3)

13：30 ～ 18：00

Exhibition（1st floor & 2nd floor Hall & Foyer）

Day 2 6/4 (Sat)
Venue: 2nd floor Auditorium
Satellite Venue: 1st floor Small Auditorium
9：00 ～ 9：45 Invited Lecture 4 Chair: Masahiro Yoshiyama (Okayama University)「Advantages, disadvantages and future direction of adhesive dentistry」
Ricardo M. Carvalho (University of British Columbia, Canada)
9：45 ～ 10：00

Break Time

10：00 ～ 10：45 Invited Lecture 5 Chair: Satoshi Imazato (Osaka University)「Clinical Aspects of Resin-Bonded Fixed Dental Prostheses (RBFDPs) with Ovate Pontic in the
Esthetic Region」
	Hiroyuki Kibayashi (KIBAYASHI Dental Clinic)
10：45 ～ 13：00

Break Time

13：00 ～ 14：00

Special Lecture 1

Chair: Y uji Tsubota (Vice president of the Japan Sciety for
Adhesive Dentistry)※Japanese only available「The history of adhesive ～ In 40 years of clinical practice ～」Hideto Takahashi (President of Japan Dental Federation/Iogi Dental Clinic)
14：00 ～ 14：20

Break Time

14：20 ～ 14：50

Special Lecture 2

Chair: Yoichiro Nara (President of the Japan Sciety for Adhesive
Dentistry)※Japanese only available「Expected activities in building blocks for innovation」
Masahito Sumitomo (President of Japanese Association for Dental Science)
14：50 ～ 15：10

Break Time

15：10 ～ 16：10 Specialist Certification Workshop Chair: Shoji Kato (Takanawa Dental Office)※Japanese only available「Procedures of new and renewal applications for the specialist qualification」
Shoji Kato (Takanawa Dental Office)「On a training guideline for a specialist of Japan Society for Adhesive Dentistry」
Naotake Akimoto (Akimoto Dental Clinic)
9：00 ～ 16：10
9：00 ～ 16：10

Poster Viewing (1st floor 1st Meeting room)
Exhibition (1st floor & 2nd floor Hall & Foyer)Day 3 6/5 (Sun)
Venue: 2nd floor Auditorium
Satellite Venue: 1st floor Small Auditorium
9：00 ～ 9：45 Invited Lecture 6 Chair: Takatsugu Yamamoto (Turumi University)「Evidence for Polymerization Contraction Stress Effects on Resin-Tooth Bonding」
Jack L. Ferracane (Oregon Health & Science University, USA)9：45 ～ 10：00

Break Time

10：00 ～ 11：00

Educational Lecture

Chair: Toru Nikaido (Congress president of The 41st JSAD/
Asahi University)※ Japanese only available「Benefits and problems of root canal filling and treatment of vertical root fracture by adhesion」
	Tsutomu Sugaya (Department of Periodontology and Endodontology, Division of
Oral Health Science, Hokkaido University Faculty of Dental Medicine)
9：00 ～ 11：00
9：00 ～ 11：00

Poster Viewing (1st floor 1st Meeting room)
Exhibition (1st floor & 2nd floor Hall & Foyer)

11：00 ～ 11：50

Poster Discussion (1st floor 1st Meeting room)

11：50
Closing Ceremony

IAD Program
Invited Lecture

IAD Program

Invited Lecture 1

6/3（Fri） 14：00 ～ 14：45

Creating a future of dentistry
Junji Tagami
Quartz Dental Clinic

In the past 40 years, adhesive dental materials had promoted innovative restorative treatment options. The socalled minimally invasive caries treatment technique was developed utilizing the adhesive resin composite materials
combined with the caries detecting dye solution, which enabled indicating dentin carious lesion to be removed
before restoration. Adhesion bridge restoration was also one of the innovative restoration techniques. Because of the
improvement of bonding performance and handling properties, as well as the clinical implication techniques, theadhesive restoration became to be applied to more extensively damaged teeth reconstructions. Recently, the socalled direct bridge restoration and mono-block direct composite crown restoration are gradually accepted in thedental clinicians, being supported by the clinical evaluation reports with excellent performance.
The bond strength of the restorative materials is often evaluated and discussed, however, the sealing ability at
the interface between the restoration and tooth substance is believed to be very important for the prevention ofrecurrent caries and protection of pulp tissue. As the result, the adhesive restoration is expected to extend thelongevity of teeth of the patients. Even in the cases of endodontically treated teeth, the adhesive restorations withstrong bonding and reliable sealing at the interface is expected to provide favorable clinical performance. Preventionof the coronal leakage is considered to be very effective to reduce the peri-apical inflammation of the endodonticallytreated teeth. As seen in the history of adhesive dentistry, it has a potential to develop new treatment options andpreventive therapies.

〈Curriculum Vitae〉
1980
1984
		
1987
1994
1995
2021

DDS, Faculty of Dentistry, Tokyo Medical and Dental University (TMDU)
PhD, Graduate School, TMDU
Assistant Professor, TMDU (-1994)
Adjunct Assistant professor, Medical College of Georgia (-1988)
Professor, Ou University (-1995)
Professor, TMDU (-2021)
Director, Advanced Dental Center, Quartz Dental Clinic

Adhes Dent Vol. 40 No. 2 2022

37

IAD Program

Invited Lecture 2

6/3（Fri） 15：00 ～ 15：45

Sustainable biomimetic approaches for restoration of vital vs devital
teeth
Sema Belli
Selcuk University, Republic of Turkey

It has been reported in several studies that removal of the pulp followed by root canal treatment procedures areassociated with irreversible changes in dentin structure and endodontically treated teeth subject to root fractures
more often than vital teeth. Cumulative factors were listed as the cause of the possibility of the root canal treated
tooth being weaker such as degradation after root canal treatment, loss of proprioception, changes on shear strengthand toughness of tooth structure after endodontic treatment, the effects of medicaments, solvents, irrigation
solutions, medicaments and several other factors which affect the root dentin. Increased stresses over the remaining
sound tooth structure due to loss of tooth structure can be considered as the most important factor. Therefore,
restoration of endodontically treated teeth require special care.
Recent publications and virtual social media posts have shown that natural-like restorations and techniques are
attracting more and more attention. Furthermore, it has been inevitable recently that we follow the rules ofsustainable dental practice. The number of clinicians who prefer biomimetic restorations and the number of theresearchers evaluating this issue is increasing day by day. In 2017,‘The Protocols of Biomimetic Restorative
Dentistry’have been published. By following the rules listed in this publication, a guideline for long term clinicalsuccess of biomimetic restorations could be provided. Thanks to adhesive dental techniques and materials. They
provide creation of restorations without giving further damage to the remaining dental tissues. However, theclinicians should still have basic knowledge about planning a biomimetic restoration for vital and non-vital teeth.
The aim of this conference is to give information about identifying restoration options for vital and non-vital teeth
and to give information about how to build stress-reduced restorations for the sake of sustainable dental practice.

〈Curriculum Vitae〉
She graduated from Marmara University, Istanbul, Turkey
with DDS, and received her PhD degree in Department of
Operative Dentistry from Selçuk University, Konya, Turkey.
Dr. Belli founded Department of Endodontics in Faculty of
Dentistry, Selçuk University and worked as a chair for 10
years. She worked at Tokyo Medical and Dental University,
Japan and Medical College of Georgia, US about adhesion ofdental materials and bonding to the endodontic surfaces. She
has published and lectured extensively on dental composites,
adhesives, glass or polyethylene fiber-reinforcement restorations,conservative restoration of extensive cavities, restoration of38

endodontically treated teeth, post and core restorations, finite
elemental stress analysis, bonding to the endodontic surfaces,
biomimetic dentistry, stress reduced restorations of root-filled
teeth and biocompatibility of dental materials. She worked as aboard member for Continental European Division of IADR (CEDIADR) and Turkish Endodontic Society. Dr. Belli is currently
full time professor in Faculty of Dentistry, Selçuk University,
ERASMUS Coordinator of the Dental School, board memberof Scientific Research Projects Center (BAP) of the University,board member of Advanced Technologies Center of Selçuk
University (iLTEK).

Adhes Dent Vol. 40 No. 2 2022

IAD Program

Invited Lecture 3

6/3（Fri） 16：00 ～ 16：45

Key features modern universal adhesives need for durable bonding
Bart Van Meerbeek
KU Leuven, Belgium

Dental adhesive technology has evolved rapidly and today enables durable bonding to both enamel as dentin.
The latest generation of UNIVERSAL ADHESIVES (UAs) combine the primer with the adhesive resin, enabling
simplified clinical bonding procedures with (claimed) lower technique sensitivity. Most of todays UAs contain 10MDP as the most efficient functional monomer. They nevertheless may still differ in bonding performance
depending not only on the quality/concentration of the 10-MDP contained, but also on other adhesive ingredientsand their hydrophilicity/hydrophobicity balance.‘UNIVERSAL’refers to application versatility, enabling UAs to be
applied either in ETCH-AND-RINSE or SELF-ETCH bonding mode, while offering also (claimed) bonding potential to
glass-rich (via silane) and glass-poor zirconia (via 10-MDP) ceramics. While performing favorably at short term, theUA’s long-term bonding performance is still insufficiently proven. One UA shortcoming is their low film thickness,
resulting in suboptimal polymerization to stabilize the adhesive interface, potentially also promoting water sorption,and reducing the adhesive layer’s ability to absorb stress and act as shock absorber to counteract the high tensile
forces imposed to the adhesive interface by the overlying resin composite during polymerization. With special focus
on the neglected need of a hydrophobic and sufficiently thick adhesive-resin layer, the potential of innovative twostep UA technology will be presented.

〈Curriculum Vitae〉
Bart Van Meerbeek obtained his DDS (dentist) in 1988 and his
PhD in 1993 at KU Leuven (University of Leuven) in Belgium.
He continued his research activity abroad for one year at the
University of Texas Health Science Center at San Antonio,
Texas, and later also at the University of Missouri-Kansas
City. In 1995, he became Assistant Professor‘Docent’() at KU
Leuven and since then teaches Dental Biomaterials Science.
In 1998 and 2002, he was promoted respectively to Associate
Professor ‘Hoofddocent’() and Professor ‘Hoogleraar’(), and in2005 to Full Professor‘Gewoon(
Hoogleraar’). From August 2020,
he serves as Chair of the Department of Oral Health Sciences‘Departementsvoorzitter’() of KU Leuven for the next four
years. He founded BIOMAT, the Biomaterials Research group,
which focusses on diverse kinds of biomaterials with orofacial
application, and encompasses fundamental material science andbiological cell culture, micro-organism and animal research, aswell as applied laboratory and clinical research. His primaryresearch interest involves studies related to the broad field ofAdhesive Dentistry, including fundamental as well as clinicalresearch regarding dental adhesive technology in particular.
Newer research lines deal with Dental Ceramics, Additive
Manufacturing, Cariogenicity & Biocompatibility of Dental
Materials, Bioactive Materials and Pulp-preservation Material
Technology. His research work has been published in more

Adhes Dent Vol. 40 No. 2 2022

than 450 peer-reviewed journals, having resulted in an h-index
of 81Web of Science/117Google Scholar. He has served as promoter/copromoter of 14/4 PhDs (+ 4 ongoing). He has been honoured withseveral awards such as the 1996 triennial Robert Stock Awardfor best PhD dissertation in Biomedical Sciences, the 1997
Albert Joachim Award, the 1998 Biomedical Sciences Awardof the Research Council of KU Leuven, the 2000 IADR Young
Investigator Award, the 2003 Academy of Operative Dentistry
Buonocore Memorial Lecturer, the 2008 CED-IADR (Continental
European Division of IADR) Robert Frank Lecturer, the 2014
IADR/AADR William J. Gies Award for the best 2014 JDR
paper in the Biomaterials & Bioengineering Research category,the 2015 IADR Wilmer Souder Award (IADR Distinguished
Scientist award for Dental Materials) and the 2022 IADRDistinguished Service Award. Since 2003, he has been appointed
as holder of the Toshio Nakao Chair for Adhesive Dentistry. He
was President of the Pan-European Federation of IADR in 20062007 and served as Secretary of CED-IADR for 12 years. In
September 2019 (Madrid), he was elected as President Elect of
CED-IADR and became CED-IADR president in September 2020and organized the 2021 CED-IADR/NOF Oral Health congressin Brussels (September 16-18, 2021: https://ced-iadr2021.com/).
Since 2004, he is Editor-in-Chief of the Journal of Adhesive
Dentistry.

39

IAD Program

Invited Lecture 4

6/4（Sat）

9：00 ～ 9：45

Advantages, disadvantages and future direction of adhesive dentistry
Ricardo M. Carvalho
University of British Columbia, Canada

The introduction of adhesion in Dentistry has unequivocally brought significant advantages to clinical practiceand opened an endless path for research in the field. Adhesion allowed for reduced waste of tooth structure andsignificantly improved simplicity and effectiveness of procedures. While disadvantages of adhesion are not readily
perceived, research has shown that the quality of adhesion varies in strength and durability among dental
structures and dental materials and that required deeper knowledge of materials science to support clinicalprocedures. This presentation will focus on how adhesion in Dentistry has benefit from research and what are thecurrent directions of adhesive materials and techniques for the future.

〈Curriculum Vitae〉
Dr. Carvalho is Professor & Head in the Department of Oral
Biological and Medical Sciences; and former Director of the
Frontier Clinical Research Centre at the University of British
Columbia - UBC. He has previously taught at the Universityof São Paulo, Brazil, University of Florida, USA, Universityof Hokkaido, Japan and served as Director of R&D of Bisco
Inc., Chicago, IL. His research interests include: uncovering
the mechanisms involved in degradation of adhesive joints tomineralized tissues and finding ways to prevent it; developmentof polymer composites from seashell fish with bioactivity and40

reinforcement capabilities; and development of chitin- andCNC-based composites for dental and medical applications. He
serves on the Editorial Board of several journals, is a Board
member and Secretary of the Academy of Dental Materials andis currently Senior Past-President of the Dental Materials Group(DMG) - IADR. He is a member of the executive committee
and steering committee of NCOHR. He has published over 240
scientific articles in the field of dental materials and restorative
dentistry and lectures worldwide to clinicians and researchers.

Adhes Dent Vol. 40 No. 2 2022

IAD Program

Invited Lecture 5

6/4（Sat） 10：00 ～ 10：45

Clinical Aspects of Resin-Bonded Fixed Dental Prostheses (RBFDPs)
with Ovate Pontic in the Esthetic Region
Hiroyuki Kibayashi
KIBAYASHI Dental Clinic

The loss of maxillary central incisor represents an esthetically and functionally challenging situation. There arevarious methods available for esthetic restoration after tooth loss. The loss of anterior tooth can be restored withthree different treatment methods: the first method is a fixed dental prostheses (FDPs) with two retainers or acantilever single-retainer design; the second method is the implant-supported single crown (SCI); and the third
method is the resin bonded fixed dental prostheses (RBFDPs) made with a cantilever single retainer
design(RBFDPs-SR). The use of RBFDPs may be considered as a valid and minimally invasive therapy alternative to
traditional FDPs or SCI in certain particular patient situations.
The survival and success rates of all-ceramic RBFDPs-SR are reported to be higher than the all ceramics FDPs
of a cantilever single-retainer design. Meanwhile case selection is an important factor for successful RBFDPs-SR.
The upper lateral and central incisor, the lower incisors, and the upper and lower bicuspids are suitable for RBFDPs
pontic placement. Single-tooth loss and vitality of the abutment tooth are both desirable for RBFDPs. By using
RBFDPs, the incidence of patient complications is generally low, especially biological complications, whereas
debonding is the most technical complication in most cases.
The aim of this lecture is to show the three different ways to deal with a single tooth loss in the esthetic region
and to compare the advantages and disadvantages of each so that we can discuss which treatment option is best forus.
This lecture illustrates the technics and considerations of all ceramic RBFDPs-SR in clinical aspects and shows
how to manage gingival tissue with ovate pontic to obtain the optimal esthetic result.
The Author declares that there is no conflict of interest.

〈Curriculum Vitae〉
1981-1982: RDT, Osaka University Dental Technology Institute1986-1992: DDS, School of Dentistry, Osaka University
1988-2002: PhD, Graduate School of Dentistry, Osaka University
2009:
Certified Prosthodontist, Japan Prosthodontic Society
2009:
Certified Dentist, Japan Academy of Esthetic Dentistry
2011:
Certified Periodontist , The Japanese Academy of Clinical Periodontology
2018-Present: Clinical Professor, Department of Fixed Prosthodontics, Graduate School of Dentistry, Osaka University
2019-Present: Visiting Clinical Professor, Department of Restorative Dentistry, Hokkaido University Hospital

Adhes Dent Vol. 40 No. 2 2022

41

IAD Program

Invited Lecture 6

6/5（Sun）

9：00 ～ 9：45

Evidence for Polymerization Contraction Stress Effects on Resin-Tooth
Bonding
Jack L. Ferracane
Oregon Health & Science University, USA

The potential deleterious effects on the resin-tooth bonded interface created by the forces produced during thepolymerization of dental resin composites was first described by Dr. Rafael Bowen in the 1960’s. This discovery
provided the basis for his quest to develop a resin system for achieving strong adhesion to dentin. The issue lay
mostly dormant for nearly twenty years, before being brought to attention of researchers and manufacturers alikeby Professors Davidson, DeGee and Feilzer from ACTA in the Netherlands, specifically with their description of the
C-factor. Their work clearly showed how the constraint produced by a three-dimensional cavity preparation could
produce significant stresses within the dental composite during curing, if the material was actually bonded to thecavity preparation walls. This understanding made it clear that there was a competition between the acquisition ofadhesive forces to the tooth and the stress developing in the restorative material, which tended to pull the materialaway from the interface. Research has verified that these stresses can have deleterious effects on marginal integrity,
as well as on the properties of the composite itself.
Many studies have been conducted to determine the multiple factors that affect these stresses, including thecomposite’s rate of polymerization, the filler and monomer formulation, the overall degree of cure, and theconstraints imposed by the geometry of the cavity preparation. Methods have been developed for studying thesestresses and their effects on the tooth-restoration interface, including bond strength testing, microleakage andnanoleakage, assessment of stress directions, crack analysis and acoustic emission. Studies have shown reduced
adhesion to cavity preparation walls in composites in which significant stress was generated during polymerization,
as well as crack propagation in the bonding substrate near the interface.
Numerous strategies have been developed to reduce the stress produced in the dental composite, as well as its
effects. Especially relating to the development of bulk-fill materials, the field has seen the development of new
monomers, modifications of the photoinitiator system, and the inclusion of stress relieving components and low
stress producing monomers. Clinically, modifications to the placement technique have included alteration in the lightactivation protocol, incremental placement and curing techniques, use of bulk filling materials, and the placement ofresilient liners. This presentation will present a chronological view of this important issue in restorative dentistry,
specifically as it relates to the criticaly important restorative material-tooth interface.
〈Curriculum Vitae〉
Jack Ferracane is Professor and Chair of Restorative Dentistry at
Oregon Health & Science University, Portland, Oregon. He received
a B.S. in Biology from the University of Illinois, and an M.S. and Ph.D.
in Biological Materials from Northwestern University. He is a founding fellow and past-President of the Academy of Dental Materials.
He is a past-President of the Dental Materials Group of the International Association for Dental Research. He is a past-President of theAmerican Association for Dental Research (now American Association for Dental, Oral and Craniofacial Research). He is the recipientof the IADR Distinguished Scientist Wilmer Souder Award from the
Dental Materials Group of the IADR, the Founders Award from theAcademy of Dental Materials, and the Hollenback Award from theAcademy of Operative Dentistry. He is an honorary member of theAmerican College of Dentists and the Oregon Dental Association.
He is a fellow of the American Institute of Medical and BiologicalEngineering. He serves on the editorial board of ten journals, and is
Editor-in-chief of a new journal published by the ADA and Elsevier
entitled, JADA Foundational Science. He is a past Associate Editorof the Journal of Dental Research and Odontology. He has served
as a regular member of the Oral, Dental and Craniofacial Sciences
Study Section [ODCS] of the NIH/NIDCR. He has authored a textbook entitled “Materials in Dentistry. Principles and Applications.”
He is co-editor of a textbook entitled “Craig’s Restorative Dental Ma-

42

terials.” Currently in its 14th edition. He is a co-editor of a textbook
entitled “Summitt’s Fundamentals of Operative Dentistry. A Contemporary Approach,” now in its fourth edition. He has published andlectured extensively on dental materials, including dental composites,
adhesives, amalgam, and practice-based dental research. He has provided continuing education at annual meetings of the ADA, British
Dental Association, California Dental Association, Chicago Midwinter,
Midwest Dental Conference, Oregon Dental Conference, Pacific NW
Dental Conference, Southwest Dental Conference, Yankee Dental
Congress, and to other professional dental organizations. His current
research interests are in developing new monomers for enhanced
dental composites, studying the factors that affect biofilm formation
around dental composite restorations leading to the recurrence of
caries lesions, and the use of bioactive glasses as potential antimicrobial and remineralizing agents in resin-based dental materials. His
research is funded by the NIH/NIDCR as well as private industry.
He also is actively involved in the establishment and operation of
networks designed to conduct dental clinical research in the private
practice setting, and most currently was involved in a large scaleclinical study in the NIH-funded National Dental Practice-based Research Network (The Network) investigating the characteristics andprogression of cracked teeth.

Adhes Dent Vol. 40 No. 2 2022

日本接着歯学会 プログラム
特別講演
教育講演
専門医研修会

JSAD Program
Special Lecture
Educational Lecture (JSAD)
Specialist Certification Workshop

日本接着歯学会 プログラム 特別講演 1
JSAD Program Special Lecture 1		

6/4（Sat） 13：00 ～ 14：00

接着臨床 40 年の軌跡
高橋英登
医療法人社団慧医会

井荻歯科医院The history of adhesive ～In 40 years of clinical practice～
Hideto Takahashi
Medical corporation association Eikai, Iogi dental clinic

信じられない事かもしれないが今から 40 年前，歯科診療の中には「接着」という概念は存在していなかった！！
ブラックの窩洞の要件を満たすように窩洞形成を行い Gold インレーをリン酸セメント等の無機セメントで装着する．
当然の事ながら歯質と金属修復物の間の隙間をセメントで満たし嵌合力で脱離に抵抗する事で維持力を得る方法で施術する事が Standard であった．
全部被覆冠も同様，支台歯と冠との間の隙間をセメントで埋める，言うなれば壁土と同じ能力の無機セメントでひっかかって止める手法であったのだ！！
しかし，それでもある一定期間修復物は口腔内で存在し機能をはたしていた．それは高カラット Gold の展延性を活用したマージンバーニッシュ等の「わざ」により辺縁の封鎖性を確保しセメント層の露出を減らしセメントの溶解を阻止する職人わざによる点が修復物の長期耐久性に寄与しているからに他ならない．
またリン酸セメントで装着したバケツ冠がそこそこもっていたのは歯質の削除が極端に少なく，エナメル質が多く残存していたから，そして，鋳造冠の時代は技工分野での切磋琢磨による鋳造精度の向上がマージンフィットを向上させ，同じくセメント層の露出を防いでいたからだと推測される．
最近，まれなケースではあるが接着材を用いた修復物が脱離して来た症例と従来型の無機セメントを用いて装着された修復物の脱離症例を比べた時，二次カリエス等の発生頻度が全く違う事に気づかされる．これぞ，わが国が世界をリードし続けている歯質接着能を有する接着剤のデンティンボンディング能のおかげに他ならない
近年，一般臨床に供されている多機能型の歯科用接着材は，従前は夢であった歯質接着能を獲得しさらに非貴金属！！そして貴金属！！さらに焼成型セラミックスそしてセラミックス＋高分子の複合材へまでも適応範囲が拡大し，
ほぼマルチユースな接着材として臨床の中の拡大の一助となっている．
これからの歯冠修復はセラミック系素材を主としたメタルフリーの時代となる事は確実である．
そして，これらのセラミック修復の肝は「接着」である点は疑う余地がない．
「接着」を制す者が「臨床」を制す時代到来である．
本講演に於いては，世界の「歯質接着」をリードしてきたわが国の接着臨床の変遷！！そしてこれからの展望について語ってみたい．

〈略

歴〉

1977年
1988年
1993年
1995年

日本歯科大学歯学部 卒業
日本接着歯学会 編集委員（2000年まで）
日本補綴歯科学会指導医 認定
日本歯科医師会生涯研修講師（1995年～ 1996年度）

Adhes Dent Vol. 40 No. 2 2022

2007年
2010年
2011年
2015年

東京都杉並区歯科医師会 会長（2013年 6 月まで）
日本接着歯学会 副会長（2014年 3 月まで）
日本歯科大学生命歯学部 客員教授（現在に至る）
日本歯科医師連盟 会長（現在に至る）

43

日本接着歯学会 プログラム 特別講演 2
JSAD Program Special Lecture 2		

6/4（Sat） 14：20 ～ 14：50

イノベーションのための積み木で期待される活動
住友雅人
日本歯科医学会，一般社団法人

日本歯科医学会連合

Expected activities in building blocks for innovation
Masahito Sumitomo
Japanese Association for Dental Science, Japanese Dental Science Federation

国際接着歯学会との併催大会の開催おめでとうございます．この大会がニューノーマルとして，分科会における国際学術大会のモデルケースとなることに期待しています．
「接着歯学 2022 －革新と挑戦―」という大会テーマにふさわしいお話になるかどうかは分かりませんが，改めて日本歯科医学会（以下 学会）がこれまで取り組んできたこととそこを基盤として創設された法人格を有する日本歯科医学会連合（以下 学会連合）と日本歯科専門医機構（以下 専門医機構）を含めて，貴会に期待する今後の方向性などについてお話しさせていただきます．
学会はご存知のように，現在，公益社団法人日本歯科医師会の内部組織です．そこで，法人格を必要とする事業については，2016 年 4 月に創設されました学会連合が担当するという仕分けがなされています．
現在，学会における重点的な事業は英文誌の発刊です．2006 年から目指していたインパクトファクター（IF）が昨
年に付与されました．5.093 と高く，今後の投稿数の増加を見越して，今般，体制強化を図りました．貴会もこのレビュー誌への投稿を進めてください．
そして，2 年ごとの診療報酬改定における医療技術評価提案書の提出です．各分科会からの提案書は，学会の歯科医療協議会で調整し，取りまとめて厚生労働省に提出しています．この権利は歯科医療において重要であり，それに伴って義務が生じます．新機能や新技術を提案して，国民が公的医療保険でカバーされる範囲を広げるとともに，医療の質の向上に貢献しなければなりません．学会の活動評価は収載件数や収載率に反映されます．貴会からの提案に期待します．
加えて，昨年の第 24 回日本歯科医学会学術大会で大々的に発出しました 2040 年に向けての歯科イノベーションロー
ドマップに掲げた目標の具現化です．貴会からも提案していただきましたが，これはオープンイノベーションとして発出していますので，目標には誰もが挑戦できます．具現化するためには目標をテーマとして多面的に討議する必要があります．そこから多くの新機能や新技術が見つかるでしょうし，次のステップに進めます．学術大会のメインテーマやシンポジウムテーマをこのロードマップの目標からピックアップするのも次の展開には良い考えです．
次に学会連合ですが，ここでは医療ニーズを提示し，多くの分野との共同事業に展開するマッチング会を開催しています．現在，全国から参加可能なオンライン開催を再検討中です．各会員団体に所属する方々が，気楽に参加できるようなシステムを目指しています．学会のホームページから医療ニーズの登録を常時受け付け，定期的に開催する計画です．ここから新機能・新技術として公的医療保険に導入されることを期待しています．ぜひご参加ください．
貴会はその専門性の研究成果をすべての分野にわたる「接着」というキーワードで広範囲に貢献しています．専門医機構の社員になっていますが，これまでに接着歯科専門医という名称が俎上に上がったことはありません．そこで専門医機構における選択共通研修の担い手としての活躍が期待されます．なぜならば接着はすべての歯科医療の領域に必要な技術だからです．

〈略歴〉

1969年 3 月
1973年 3 月
1996年 5 月

44

日本歯科大学卒業
日本歯科大学大学院歯学研究科（歯科理工学専攻）修了
日本歯科大学歯学部共同利用研究所教授（歯科麻酔学併任）

2001年 4 月 日本歯科大学歯学部附属病院長
2008年 4 月 日本歯科大学生命歯学部長
2013年 4 月 日本歯科大学名誉教授
2022年 3 月現在 日本歯科医学会会長（一社）日本歯科医学会連合理事長

Adhes Dent Vol. 40 No. 2 2022

日本接着歯学会 プログラム 教育講演
JSAD Program Educational Lecture (JSAD)

6/5（Sun） 10：00 ～ 11：00

接着による根管充填と垂直歯根破折治療の利点と課題
菅谷勉

北海道大学大学院歯学研究院口腔健康科学分野歯周・歯内療法学教室

Benefits and problems of root canal filling and treatment of verticalroot fracture by adhesion
Tsutomu Sugaya
Department of Periodontology and Endodontology, Division of Oral Health Science, Hokkaido
University Faculty of Dental Medicine

接着歯学は多くの分野で臨床成績の向上に貢献しており，とくにレジン充填やクラウン・ブリッジでは MI や接着ブ
リッジなどの発展に大きな成果をあげてきた．しかし，根尖部根管への接着については，広く臨床的に普及しているとは言い難いのが現状であろう．
根管充填に接着を応用する利点として，歯冠側からの漏洩防止のほか，根尖孔が開大し加圧根充に適した根管形態に形成できない症例の封鎖が可能になること，さらに破折抵抗性が向上することがあげられる．接着による根管の封鎖であれば加圧は不要となり，根管充填時の加圧に抵抗する根管形態も不要となる．この場合に大きな課題となるのが接着阻害因子である．根管充填では，根管洗浄剤や貼薬剤の残存が接着を阻害することに加え，乾燥が大きな問題となる．
ペーパーポイントで根管を乾燥するだけでは多量の水分が根管壁に残存しているが，根管内を強圧でエアーブローすることは禁忌である．また，根尖狭窄部や側枝は水で満たされているため，シーラーが歯周組織に溢出した場合には，水を多量に混入して重合阻害をおこし，炎症を誘発する危険性もある．したがって，根管充填に接着を応用するためには多量に水分があっても，良好に重合し根管壁に接着する根管充填材でなければならない．これらの課題を克服した根管充填材としてメタシール Soft ペーストがある．
また，垂直歯根破折の予防としては，ファイバーポストの接着やフェルールを確保した外側性歯冠補綴など，歯冠側から根尖に向かって歯根が破折していく場合の対策などが実践されている．一方，垂直歯根破折は根尖側から歯冠側に伸展していく場合も多く，この対策には接着による根管充填が有効と考えられる．しかし，象牙質と弾性率が高い根管充填材を接着して一体化すると，根管充填材は除去できず再根管治療やポスト形成が困難になる．そこで，除去可能な
根管充填材としてガッタパーチャポイント，フレックスポイントにメタシール Soft，スーパーボンド混和ラジオペーク
を接着性シーラーとして組み合わせ，根管充填後に破折抵抗性を検討した．その結果，スーパーボンドのみ，あるいはスーパーボンドとフレックスポイントの組み合わせで高い破折抵抗性が得られ，とくに歯面処理剤とグリーンとティー
スプライマーを併用すると大きな効果がみられた．
さらに，垂直破折した歯根の接着による保存治療は，眞坂により提唱されてから 40 年が経過しようとしているが，10 年以上経過している症例もめずらしくなくなった．この治療は封鎖性，生体親和性に加えて接着強さが求められるが，再破折症例のほとんどが根管壁とレジンの界面で破断していることから，根管壁への接着強さの確保がまだ課題の一つとしてあげられる．ティースプライマーを用いると組織が変性するが，歯周組織への影響は短期的と考えられることから，根管内から接着する場合には，接着強さの長期的な向上を期待して表面処理材グリーンとの併用を行っている．本講演では，これらの根管壁への接着の利点と課題について解説する．

〈略

歴〉

1985年
1985年
1988年
1998年
2002年

北海道大学歯学部 卒業
北海道大学歯学部附属病院第 2 保存科 医員
北海道大学歯学部附属病院第 2 保存科 助手
北海道大学歯学部附属病院第 2 保存科 講師
北海道大学大学院歯学研究科歯周・歯内療法学教室
教授

Adhes Dent Vol. 40 No. 2 2022

2019年

助

 海道大学大学院歯学研究院歯周・歯内療法学教室
北授
日本歯周病学会 専門医・指導医．
日本歯科保存学会 指導医・専門医．
日本外傷歯学会 指導医．

教45

日本接着歯学会 プログラム 専門医研修会
JSAD Program Specialist Certification Workshop

6/4（Sat） 15：10 ～ 16：10

接着歯科治療専門医の新規申請および更新申請について
加藤正治
高輪歯科

Procedures of new and renewal applications for the specialist
qualification
Shoji Kato
Takanawa Dental Office
日本接着歯学会は，2020 年 10 月 4 日，これまでの“認定医制度”に代わる新たな指標や規程に基づく“専門医制度”を施行しました．専門医の名称は，「接着歯科治療専門医」と定められました．現在は，経過措置として設けられた 1
年間の暫定期間が終了し，新制度に則った新規申請が本格的にスタートしています．そこで本講演では，これから接着
歯科治療専門医の新規申請をお考えの会員や，更新申請の準備が必要な会員の方々がスムーズに申請を行えるよう，申請手続きのポイントについて解説します．
本会専門医制度においては，①専門医認定研修施設における通算 5 年間の認定研修，ならびに②認定審査として症例試験と面接試験からなる認定試験が課せられます．また，③専門医に求められる学識向上のために定期的に開催される認定研修会への参加，④活動実績および業績（本会活動への参加や診療実績など）が研修単位として認定されます．以上の 4 点が，これまでの“認定医制度”と大きく異なる点となります．
接着歯科治療専門医の資格を取得するためには，申請時に専門医制度施行細則に定められた所定の業績を含む認定研修の修了と研修単位の取得要件を満たす必要があります．具体的な申請方法および申請書類等は専門医認定研修実施要綱に記載しています．なお，資格取得後の更新は 5 年毎とし，研修単位の取得要件を満たしたうえで更新申請が必要となります．ただし，認定医から専門医認定基準適合試験に合格して専門医となられた会員の場合は，初回の更新期限は「認定医証」記載の期日となり，申請要件は旧認定医制度規則・施行細則を適用しますのでご留意下さい．
また，すでに認定研修に相当する研鑽を経て日々臨床に従事なさっている会員を対象に新規申請していただくための特別措置を設けています．これから認定研修を経て申請なさる会員の申請手続きだけでなく，認定研修に値する研修歴と業績ならびに臨床実績をすでにお持ちの会員が申請なさる場合の手続きについても詳しく解説しますので，本措置を活用して申請いただければ幸いです．

〈略

歴〉

1990年

東北大学歯学部 卒業
柏田聰明先生（東京医科歯科大学臨床教授）師事（〜 1998年）
1991年 鶴見大学歯学部歯科理工学専攻
1997年 学位（歯学博士）取得 鶴見大学歯学部歯科理工学講座
非常勤講師
1998年 高輪歯科 開設
2015年 日本経済新聞社「健康セミナー 21」講師（〜 2016年）
モスクワ国立第一医科大学特別講師

46

2017年
2020年

日本経済新聞社「丸の内キャリア塾」講師（〜 2021年）
モリタTRIOSテクニカルインストラクター【学会活動】
日本接着歯学会：理事，専門医認定委員会委員長，接着歯科治療
専門医，指導医，専門医認定研修施設指定
日本歯科理工学会：Dental Materials Senior Adviser（修復治療関連器材，予防歯科関連器材）
ほか

Adhes Dent Vol. 40 No. 2 2022

日本接着歯学会 プログラム 専門医研修会
JSAD Program Specialist Certification Workshop

6/4（Sat） 15：10 ～ 16：10

専門医認定研修ガイドラインについて
秋本尚武
秋本歯科診療所

On a training guideline for a specialist of Japan Society for Adhesive
Dentistry
Naotake Akimoto
Akimoto Dental Clinic

日本接着歯学会が認定する「接着歯科治療専門医（以下 専門医）」を取得するためには，専門医認定研修施設（以下研修施設）における専門医認定研修（以下 研修）が必要になります．各研修施設では研修を実施するにあたり，専門医認定研修実施要綱に則り，専門医認定研修ガイドライン（以下 研修ガイドライン）に基づき，専門医認定研修カリ
キュラム（以下 研修カリキュラム）を作成し，本会専門医認定委員会への提出が必要になります．そして研修を希望する専門研修医は，各研修施設が作成する研修カリキュラムに沿って研修を行うことになります．
研修ガイドラインは，研修カリキュラム作成のための具体的な研修方法や研修施設について記載をしています．専門研修医を受け入れる研修施設においては，本研修ガイドラインに基づき研修カリキュラムを作成していただくことにな
りますが，専門医取得を目指す先生方においては研修施設においてどのような研修が行われるのか研修の目標を知ることができます．
日本接着歯学会の専門医制度が施行されるにあたり，本会研修検討委員会が作成した研修ガイドラインには，I. 接着
⻭科治療専門医育成のための研修カリキュラム，II. 研修の目標，III. 研修の方法，IV. 研修の評価，について記載をしています．本講演では，研修施設そして専門研修医を対象に，特に II. 研修の目標における「経験目標」，そして III. 研
修の方法における「具体的な研修方法」について解説を行う予定です．

〈略

歴〉

1986年
1986年
1995年
1996年

鶴見大学歯学部 卒業
鶴見大学歯学部 助手（第一歯科保存学教室）
博士（歯学）取得（鶴見大学）
米国アラバマ大学バーミングハム校歯学部 客員研究員（～ 1997年）（バイオマテリアル学講座
Charles F. Cox 教授 鈴木司郎教授に師事）
2004年 鶴見大学歯学部 講師（第一歯科保存学教室）
2013年 鶴見大学歯学部 学内教授（保存修復学講座）

Adhes Dent Vol. 40 No. 2 2022

2014年

 見大学歯学部 非常勤講師（保存修復学講座）（〜現鶴在）2014年 秋本歯科診療所 開設（〜現在） 接着歯科治療専門医
認定研修施設（2021年～）
学会活動等：
日本接着歯学会（理事，代議員，研修検討委員会委員長，接着歯科治療専門医，指導医），日本歯科保存学会，日本歯科理工学会，
日本審美歯科学会，IADR，JADR

47

JSAD Poster Presentation
IAD Poster Presentation

JSAD Poster Presentation J-1

JSAD Poster Presentation J-2

Wet-dentin bonding state of recent all-in-one
adhesive systems under in vitro pulpal-pressure
conditions

Dentin bonding durability of four different selfetch adhesives

Komoto M, Sugiyama R, Maruyama C, Koshida S,
Nara Y

Kitahara S1), Takagaki T1), Shimizu S1), Okamura S1),
Ito R1), Muramatsu R1), Abdou A2), Nikaido T1)

1)

Keywords: wet-dentin bonding state, pulpal pressure,	Department of Operative Dentistry, Division of Oral Functional
Science and Rehabilitation, School of Dentistry, Asahi University
	Division of Biomaterials, Prosthodontic Dentistry Department,
Faculty of Dentistry, King Salman International University, El
Tur, South Sinai, Egypt

micro-tensile bond strength, all-in-one adhesive system

Keywords: micro-tensile bond strength, self-etching

Department of Adhesive Dentistry, School of Life Dentistry atTokyo, The Nippon Dental University2)

adhesive, thermal cycle
Objectives: The aim of this study was to quantitatively
examine the in vitro wet-dentin bonding under pulpal-pres-

Objectives: To investigate the dentin bonding durability ofsure-conditions

four different self-etch bonding systems.

(PPC)

with

recentall-in-one

adhesive

systems.

Methods: The labial surfaces of bovine teeth were ground

Methods: Standardized horizontally flatten coronal-dentin-

using #600 SiC paper to create flat dentin surfaces. Two 2

surface was prepared to 24 extracted human-sound-maxil-

self-etch adhesives: Clearfil SE Bond 2 (SE2, Kuraray Nori-

lary-molars. The specimens were divided into three PPC

take Dental) and G2-Bond Universal (G2B, GC), and twogroups;15

1-step self-etch adhesives; Scotchbond Universal Plus Adhe-(15cm-H2O-PPC). Three recent all-in-one adhesive systems;

sive (SBU, 3M) and Clearfil Universal Bond Quick (UBQ,

CLEARFIL Universal Bond Quick (CU: Kuraray Noritake

Kuraray Noritake Dental) were applied. A resin composite

Dental), Prime&Bond Universal (PB: Dentsply Sirona) and(Clearfil AP-X, A2 shade, Kuraray Noritake Dental) was

Scotchbond Universal Plus (SU: 3M), and two-step self-etchused to build up a block of composite on the bonded surface

adhesive system; CLEARFIL SE Bond 2 (SE: Kuraray Nori-

incrementally, and light-activated for 20 s using a LED lighttake Dental, control) were applied to the three PPC

curing unit (Pencure2000, Morita). All groups were sub-dentin-surfaces, and cylindrical resin-composite was bonded.

jected to thermal stress (TC) for 0 or 10,000 cycles followed

Nine standardized beam-test pieces were trimmed fromby microtensile bond strength (μTBS) testing. The μTBS

each specimen, and μ-TBS (n=18) were measured. The data

data were statistically analyzed via Weibull analysis, andwere analyzed using one-way ANOVA and Tukey’s q-test.

failure mode were recorded.

Results: The μ-TBS of CU and SU under 0 and 15 were

Results: There were no statistical difference in μTBS among

similar to or significantly smaller than those under N. For

the four adhesives before TC. However, G2B exhibited sig-

PB and SE, there were no significant differences in thenificantly higher bond strength after TC, than SBU (p<0.05).

μ-TBS among N, 0 and 15. Regardless of PPC, the μ-TBS of

Weibull analysis indicated that 1-step self-etch adhesives

CU, PB and SU were similar to or significantly greater thantended to show lower β values than 2-step self-etch adhe-

SE value.

sives after TC.

Conclusion: Wet-dentin bonding state of recent all-in-one

Conclusion: The 2-step self-etching adhesives showed rela-adhesive systems seemed to be weakened by the pul-

tively stable bonding performance after TC.

pal-pressure. However, the performance of the systems wasDisclosure of COI: None.

N(none-PPC,

control),

0(0cm-H2O-PPC),

similar to or better than SE.
*T he use of extracted human teeth in this study wasapproved by the ethics committee of the NDU, School ofLife Dentistry at Tokyo (#: NDU-T 2019-32). The authors
declare no conflict of interest.

48

Adhes Dent Vol. 40 No. 2 2022

JSAD Poster Presentation J-3

JSAD Poster Presentation J-4

Evaluation of the effects of HEMA and MDP
formulation on 2-step bonding agent

Effect of simulated pulp pressure on universal
adhesives bond strength

Shoji T, Yamashita M, Hirano K, Fusejima F

Li Y, Liu Y, Sakata T, Alam A, Md Refat Readul Islam,
Tanaka T, Ikeda T, Hoshika S, Matsumoto M,
Kawamoto C, Yamauti M, Sano H

GC Corporation

Keywords: 2-step bonding agent, HEMA, MDP, SBS, water
sorptionObjective: The objective was to evaluate the effects on
bonding strength of 2-step universal bonding agent withincreasing amount of HEMA and MDP formulation in thebond which is second step liquid and consist bonding layer.
Methods: 2-BOND (G2-BOND Universal, G2B) as a control(HEMA and MDP free), and HEMA/MDP formulated test
materials which were prepared by substituting a portion ofmonomer in 2-BOND with HEMA and MDP for 10 to 30% of
the total, were examined. Water sorption test (referred by
ISO4049) and shear bond strength test (referred by
ISO29022) were conducted, and results were statisticallyanalyzed by one-way ANOVA (p>0.05).
Results: As increasing HEMA/MDP formulation in thebond, water sorption value was increased because of containing of hydrophilic monomer, and shear bond strength
was decreased significantly. The degradation of shear bondstrength may be attributed to absorb water in bonding
layer and decrease of polymerization degree by containing
acidic monomer such as MDP.
Conclusion: G2B showed higher strength and lower sorption, which has HEMA/MDP free composition. It is expected
G2B has high durability of bonding layer, which may haveclinical advantages.
The authors are company member of GC corporation, andthey earn revenue from the company.

Department of Restorative Dentistry, Faculty of Dental Medicine,
Hokkaido University

Keywords: microtensile bond strength, simulated pulpal
pressure, dentin, adhesives
Objective: This study evaluated the effect of simulated pulppressure (SPP) with distilled water (DW) or fetal bovine
serum (FBS) on the bond strength (μTBS) of adhesives todentin.
Methods: Human molars (Ethics Committee Approval#2018/9)
were sectioned to exposed dentin surfaces and divided into
4 groups according to the adhesive systems: two-step selfetch [Clearfil Mega Bond 2 (MB2) and G2-Bond (G2B)],
universal [Scotchbond Universal Plus (SBP) and Beautibond
Xtreme Universal (BEX)]. Each group was further divided
following the SPP (non-pressure; DW; FSB). Resin composite
build-ups were made, teeth were stored in water (37°C, 24 h),sectioned into beams, and tested to determine the μTBS.
Data were analyzed using Kruskal-Wallistest and pairwise
comparisons (α=0.05).
Results: CSE (57.32 MPa) and G2B (52.80 MPa) presented thehighest mean values among non-pressure groups, and there
was no statistical difference (p=0.513). The SPP significantly
reduced the bond strength of all adhesives regardless of thesolution (p<0.05). There was no significant difference
between the μTBS when SPP was performed with DW and
FSB for each adhesive system (p>0.05).
Conclusion: MB2 presented the best bonding performance
regardless of the use of SPP. The SPP using DW and FSB
harmed the bonding performance of all adhesive systems.
The authors have no financial conflicts of interest to disclose
concerning the presentation.

Adhes Dent Vol. 40 No. 2 2022

49

JSAD Poster Presentation J-5

JSAD Poster Presentation J-6

Preliminary study for development of new micro
tensile bond strength testing

Effect of various surface treatments on tensile
bond strength to lithium disilicate glass
ceramics

Yamashita K, Toida Y, Matsumoto M, Hoshika S,
Kawamoto C, Ikeda T, Tanaka T, Yamauti M,
Sano H

Shimizu S1), Takagaki T1), Kitahara S1), Kusakabe S1),
Abdou A2), Nikaido T1)1)	Keywords: microtensile bond strength, CAD/CAM resin

Department of Operative Dentistry, Division of Oral Functional
Science and Rehabilitation, School of Dentistry, Asahi University
	Division of Biomaterials, Prosthodontic Dentistry Department,
Faculty of Dentistry, King Salman International University, El
Tur, South Sinai, Egypt

block, resin core, resin cement, bonding resin

Keywords: lithium disilicate ceramics, universal bond,Department of Restorative Dentistry, Faculty of Dental Medicine
and Graduate School of Dental Medicine, Hokkaido University,
Sapporo, Japan2)silane coupling, tensile bond strength
Objectives: The purpose of this study is to develop a new
microtensile bond strength (μTBS) testing that creates
beams before bonding and to compare μTBS with the conventional μTBS testing. As a control group, the adhesivenessof the bonding resin and the resin cement was compared.
Methods: Commercially available CAD/CAM resin block(ESTELITE P BLOCK, Tokuyama Dental), resin core
(ESTECORE, Tokuyama Dental), resin cements (ESTECEM
II, Tokuyama Dental) (Panavia V5, Kuraray Noritake Dental)
and bonding resin (Crearfil Mega Bond2, Kuraray Noritake
Dental) were used. In the conventional μTBS testing, abeam with a cross-sectional area of 1 mm×1 mm was prepared and then classified into the central and the peripheral
part. In the new μTBS testing, after preparing beams witha cross-sectional area of 2 mm×2 mm, the bonding area wasdefined as 1 mm2 with Teflon tape and bonded.
Results: The μTBS in the new μTBS testing was lower
than that in the central part of the conventional μTBS testing, but not significantly different from that in the peripheral
part. The μTBS of the bonding resin was higher than thatof the resin cements.
Conclusion: In this study, the new μTBS testing method
has the problem of inhibiting resin cement polymerization
when stored in water.

Objectives: To evaluate the bonding effectiveness of different surface treatments to lithium disilicate glass ceramics.
Methods: e.max CAD blocks were sintered and polishedwith 600-grit SiC paper. The specimens were assigned to 4groups according to the cementing protocol: 1) Scotchbond
Universal Plus Adhesive+Rely X universal (RX), 2) BeautiBond Xtreme+ResiCem EX (EX), 3) Clearfil Ceramic Primer
Plus+Panavia V5 (CP) and 4) Monobond Etch & Prime+Panavia V5 (ME). Tensile bond strength (TBS) test was
performed at 24 h or 5000 thermal cycle (TC) of 5-55°C. TBSdata were statistically analyzed via Weibull analysis.
Pre-testing failures and failure mode were recorded.
Results: RX and EX groups of 24 h showed significantly
lower bond strength than ME and CP. All specimens of RX
and EX after TC5000 failed adhesively before test. CP andME showed significantly lower bond strength after TC5000.
ME showed no pre-testing failure and exhibited highest
bond strength among all groups.
Conclusion: To obtain stable bonding performance to lithium disilicate ceramics, not only chemical treatment but
etching effect is essential.
Disclosure of COI: None.

There are no conflicts of interest to disclose to all presentersin this presentation.

50

Adhes Dent Vol. 40 No. 2 2022

JSAD Poster Presentation J-7

JSAD Poster Presentation J-8

Alkali and acid treatments for removing salivary
contamination on feldspar porcelain

Effects of ceramic primers on the bonding ofresin cement to air-abraded zirconia withalumina or silica-coated alumina

Komagata Y, Ikeda H, Nagamatsu Y, Shimizu H
Division of Biomaterials, Kyushu Dental University

Tsuda F1), Yoshida K2)

Keywords: glass-ceramics, feldspar porcelain, alkali, acid,1)

shear bond strength2)

Objectives: This study investigated the cleaning effect ofphosphoric acid or sodium hydroxide on feldspar porcelain
for bonding pretreatment to resin cement.
Methods: CAD/CAM feldspar porcelain block (Vita blocs
Mark II) was cut into 1 mm thickness and polished using
emery papers. The polished samples were contaminatedwith human saliva and divided into two groups to clean withthe agents; 37% phosphoric acid solution (acid) or 10%
sodium hydroxide solution (alkali). A resin cement wasbonded to each cleaned sample. Shear bond strength (SBS)
tests were conducted for each sample. Each sample surface
was examined by SEM observation and FT-IR analysis.
Results: The SBS for the alkali-cleaned sample was significantly higher than that for the acid-cleaned sample, and wascomparable to that for the no-contaminated sample. The
results of the SEM observation and FT-IR analysis suggested that alkali eliminates salivary contamination on theporcelain surface.
Conclusion: The sodium hydroxide solution is effective incleaning saliva contamination for bonding pretreatment.
There are no companies or organizations that should disclose their COI about the presentation. This study was
conducted with the approval of the Ethics Committee of
Kyushu Dental University (No. 19-85).

Adhes Dent Vol. 40 No. 2 2022

	D epartment of Applied Prosthodontics, Graduate School of
Biomedical Sciences, Nagasaki University
Clinic of Fixed Prosthodontics, Nagasaki University HospitalObjectives: The purpose of this study was to examine theeffects of ceramic primers on the bond strength of resin
cement to air-abraded zirconia with alumina or silica-coatedalumina.
Methods: Highly translucent partially stabilized zirconia(Aadva zirconia NT) plates were abraded with 30 μm silica-coated alumina (SCA, Rocatec Soft) at 0.28 MPa or 50 μm
alumina at 0.2 MPa (AB). SCA plates were unprimed or
primed with RelyX Ceramic Primer (RCP), G-Multi Primer(GMP), or Metal Primer Z (MPZ). AB plates were primed
with GMP or MPZ. Zirconia specimens were then bonded tostainless steel rods with a resin cement (G-CEM LinkForce)
without adhesive functional monomers. The tensile bondstrengths were measured after 24 hours (TC0) and afterthermal cycling at 4-60°C (TC10,000). Data were statisticallyanalyzed using 2-way ANOVA and Tukey-Kramer post-hoc
tests (α=0.05).
Results: At TC0, there were no statistically significant differences among the groups of SCA/RCP, SCA/GMP, AB/
GMP, and AB/MPZ (p>0.05). The bond strengths for allgroups decreased at TC10,000.
Conclusion: The bonding of resin cement to zirconia is preferable to be abraded with SCA or AB and applied with GMPor MPZ, respectively.
COI disclosure statement: None.

51

JSAD Poster Presentation J-9

JSAD Poster Presentation J-10

Effect of building direction on shear bondstrength of additive manufacturing zirconia

Effects of primers on bond strength between
titanium and self-adhesive resin cement

Miura S1), Shinya A2), Miura D2), Ishida Y2),
Fujisawa M1)

Okuyama K, Tamaki Y

1)	Division of Fixed Prosthodontics, Department of Restorative &Biomaterials Sciences, Meikai University School of Dentistry2)	Department of Dental Materials, The Nippon Dental University,
School of Life Dentistry at Tokyo

Department of Dental Materials Science, Division of Oral Functional
Sciences and Rehabilitation, Asahi University School of Dentistry

Keywords: titanium, self-adhesive resin cement,
metal primer, sandblasting

Keywords: additive manufacturing, Y-TZP,
stereolithography, building direction

Objectives: To evaluate the effects of various primers on
shear bond strength (SBS) between titanium plate andObjectives: The purpose of this study was to investigate theshear bond strength of adhesive resin cement to zirconia
fabricated using additive manufacturing and the effect ofbuilding direction.
Methods: The specimens were fabricated using ZrO2 paste(3DMix ZrO2; 3DCeram) and vat photopolymerization
method (CeraMaker 900; 3DCeram). Three different bonding
surfaces were set as parallel, diagonal, and vertical to thebuilding directions. They were embedded in epoxy resinand polished to #600 water-resistant abrasive paper (n=11).
Two adhesive resin cements (Panavia V5, SA Luting Multi;
Kuraray Noritake Dental) were used, and the surface pretreatments were set as alumina blasting and no blasting.
The shear bond test was performed with Ultradent jig usinga universal testing machine. The obtained shear bondstrength data was statistically analyzed by one-way ANOVA
followed by Turkey-Kramer multiple comparison tests.
Results: For both resin cements, no significant difference
was found in the shear bond strength among different building directions. However, when the alumina blasting was
performed, the shear strength was significantly higher thanthat of the no blasting.
Conclusion: For both resin cements, additive manufactured
zirconia specimens were not affected by the difference inself-adhesive resin cement with or without sandblasting.
Methods: Titanium plates were polished with SiC paper(#1200) and then half of them were sandblasted (powder: 50
μm Al2O3, pressure: 0.2 MPa, 10 sec). V-Primer (Sun Medical:
for precious metal), Meta Fast (Sun Medical: for non-precious
metal), or Metal Link (Shofu: for all kinds of metal) wasapplied to these titanium specimens. After then, a self-adhesive resin cement (G-Cem One EM (GC); GC or SA Luting
Multi (SA); Kuraray Noritake) was bonded on the plate(diameter: 3 mm, thickness: 5 mm). Control group was
no-priming group. Cementing specimens (n=10) were storedin water for 24 hours and then SBS was measured at crosshead speed by 1 mm/min. The data were analyzed using
Games-Howell test (p=0.05).
Results: Sandblasting contributed to higher SBS than without blasting on all groups. For without sandblasting (bothGC and SA), Meta Fast showed higher value than control.
For sandblasting, Meta Fast showed higher value thanV-primer.
Conclusion: A primer for non-precious metal might be contributed to high bond strength between titanium andself-adhesive resin cement on this limited condition.
The authors declare no conflicts of interest associated withthis presentation.

building direction on the shear bond strength.
The presenters declare that they have no conflicts of interest.

52

Adhes Dent Vol. 40 No. 2 2022

JSAD Poster Presentation J-11

JSAD Poster Presentation J-12

Shear bond strength of resin cement to FDMformed PEEK and the effect of fabrication
direction

Evaluation of wear resistance of resin cements

Miura D, Ishida Y, Aoki H, Shinya A

Keywords: wear, resin cement, cement layer

Dental Materials Science, School of Life Dentistry at Tokyo, The
Nippon Dental University

Keywords: PEEK, FDM molding, shear bond strength

Sato K, Hirano K, Fusejima F
GC Corporation

Objectives: Hybrid ceramic CAD/CAM Block has beenused for such as an alternative to metal restorations since its

Objectives: The purpose of this study was to investigate theshear bond strength (SBS) of resin cement to FDM-formed
PEEK and the effect of building direction.
Methods: The specimens were fabricated using a FDM
printer (FUNMAT HT, INTAMSYS) with PEEK filament(PEEK Films, Intamsys). Bonded surfaces were prepared to
be 0°, 45°, and 90° against the building direction.
Resin cement (PANAVIA V5, Kuraray Noritake Dental) wasused, and surface treatment was performed with six different conditions; with/without alumina blasting, with/withoutsilane treatment (Porcelain Primer, Bisco), and with/without
ceramic primer treatment (CLEAFIL CERAMIC PRIMER
PLUS, Kuraray Noritake Dental). This experiment was conducted in accordance with ISO 29022. SBS was measured
using a universal testing machine. For the statistical analysis, analysis of variance and Tukey’s multiple comparisonswere performed.
Results: No difference in SBS due to building direction wasobserved in all conditions. Comparison of surface treatments
showed that alumina blasting improved SBS in all building
directions. In addition, it was significantly improved byceramic primer treatment after alumina blasting.
Conclusion: The building direction did not affect to SBS.
Ceramic primer treatment after alumina blasting showedesthetics, and the resin cement is typically applied to adhere
it. Wear resistance of cement layer is important for esthetics
because this may cause marginal chipping and discoloration,
especially in inlay cases. In this study, we evaluated wear
resistance of resin cements.
Methods: The three-body wear test was conducted for 3
resin cements, G-CEM ONE EM(GOE), Product A and B
with a mixture of PMMA beads and glycerin (1:1 ratio) as
abrasive medium (n=4, test load: 300 g, 100,000 cycles). Eachcement was cured either in light-curing mode (LC) or
self-curing mode (SC). Wear value was measured as heightloss of specimens and data was analyzed by one-way
ANOVA followed by Tukey-Kramer test (p<0.05).
Results: Wear value (mean (±SD)) of GOE, product A and B
in LC were 15 (±5), 67 (±4) and 111 (±15) μm, respectively.
Wear value of GOE, product A and B in SC were 17 (±4), 62(±9) and 142 (±31) μm, respectively. GOE showed significantly lower wear value among products since its fine filler.
Conclusion: It can be expected GOE has excellent wear
resistance and may prevent marginal discoloration and chipping.
Disclosure of COI: The presenter of this presentation
belongs to a company, and research expenses and salaries
are paid by GC Corporation.

greater improvement of SBS for all building directions of
FDM-formed PEEK.

Adhes Dent Vol. 40 No. 2 2022

53

JSAD Poster Presentation J-13

JSAD Poster Presentation J-14

Development and validation of new pressure
variable chairside sandblaster

The effect of blood on the hardening of pulp
capping agents

Okamura S1), Takagaki T1), Kitahara S1), Shimizu S1),
Ito R1), Idono T1), Arakawa Y2), Nikaido T1)

Hoshika T, Katsumata A, Nishitani Y1)	Department of Operative Dentistry, Division of Oral Functional
Science and Rehabilitation, School of Dentistry, Asahi University2)	Morita Tokyo Mfg. Co., Ltd. Third Technology Development
Department

Keywords: sandblasting, alumina, blaster,surface roughness, tensile bond strength
Objectives: Alumina-blasting immediately before cementing
indirect CAD/CAM restorations is essential to obtain durable bonding performance. Despite the usefulness of chairside
micro blaster, alumina blasting pressure depends on the
supply level. The aim of this study was to develop and validate a new pressure variable chairside sandblaster.
Methods: A pressure variable chairside sandblaster (Adprep,
Morita) was newly developed. A micro sandblaster (Miniblaster, Deldent) was used as a control with an air- pressure
regulator. Validation tests were performed with different
air-pressure onto 1) suction pressure value 2) surface roughness of PMMA plate 3) depth and diameter of blasting at 1
cm distance and 4) micro-tensile bond strength test with a
CAD/CAM resin block (KATANA Avencia Block, Kuraray
Noritake Dental) and a resin cement (Panavia V5, Kuraray
Noritake Dental).
Results: Adprep showed equal/superior suction pressureand equal/smaller diameter of blasting comparing with
Miniblaster. Surface roughness and micro-tensile bondstrength at 0.2 MPa was significantly higher with Adprep.
Conclusion: A new pressure variable chairside sandblasterwill be a useful device for preparation of adherend surface
at chairside.

Department of Restorative Dentistry and Endodontology,
Kagoshima University Graduate School of Medical and Dental
Sciences

Keywords: pulp capping agent, mineral trioxide aggregate(MTA)
Objective: Pulp capping agents containing the portland
cement or mineral trioxide aggregate (MTA) have been
widely used clinically. It was not well-known the effect of the
bleeding from the dental pulp, such as direct pulp cappingor vital pulp amputation on the hardening of the pulp capping agents.
In this study, we investigated the effect of blood on themechanical properties of adhesive pulp capping agents.
Method: Super MTA paste (SMTA; Sun Medical Co., Ltd.,
Shiga, Japan) was used as the pulp capping agent in thisexperiment. The samples were prepared by mixing bovine
defibered blood or purified water with SMTA so as to havethe weight ratio of 10% and 20%, and curing the mixture in
the mold. SMTA specimens without blood and water wereused as the control group.
Each specimens were placed in dry box for 24 hours or
1week at 37 °C prior to measure the 10% strain compressive
strength.
Result: The initial compression strength results of the bloodor water mixture groups are significantly higher than thoseof control groups.
Conclusion: It was suggested that blood or water affect thecompression strength of the pulp capping agents.
I have no financial relationships to disclose.

Disclosure of COI: None.

54

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-1

IAD Poster Presentation I-2

Nondestructive observation of adhesively
cemented interface between dentin and indirectcomposite resin disks using a novel terahertz
pulsed imaging technique

Clinical performance of mono-block
composite crown restorations

Yonekura K1), Ida Y1), Tokisane Y2), Yano T2),
Iuchi T1), Yasui T2), Hosaka K1)
1)	D epartment of Regenerative Dental Medicine, Tokushima
University Graduate School of Biomedical Sciences
Institute of Post-LED Photonics, Tokushima University

2)

Keywords: terahertz pulsed imaging, nondestructively
observe
Objectives: This study aims to observe the indirectly
cemented dentin-resin composite interface using a terahertz(THz) pulsed imaging technique.
Methods: A human dentin disk (2 mm thick) and indirect
resin-composite disks (0.5 mm thick) were adhesively bonded
using a luting resin cement (Panavia V5, Kuraray Noritake
Dental. Inc.). After the generated THz beam was focused on
the samples, the analyses of reflected THz pulses from samples in time and frequency domains were performed using a
THz time-domain spectrometer (Tera Prospector, Nioppo
Precision Co., Ltd.). In the time domain analyses, zones ofdifferent tooth structures and restorations statuses wereidentified based on changes in the THz peak amplitude in
waveforms. In addition, THz power data were used in thefrequency domain analyses to construct two-dimensional
images of samples at specific frequency values.
Results: The adhesively cemented interface between dentin
and the indirect composite resin disks could be nondestructively visualized.
Conclusion: The development potential for future clinicalapplication of THz pulsed imaging methods in the field ofdental restoration was found.
Ethical approval: The Ethics Review Board of Tokushima
University (329-9).
Disclosure of Conflicts of Interest: None.

directTashiro H1), Miki H2), Tagami J3,6), Takagaki T4),
Hosaka K5), Sato T6), Hatayama T6), Shimada Y6)
1)Tashiro Dental Clinic
Habara Dental Clinic
Quartz Dental Clinic4)	Department of Operative Dentistry, Division of Oral Functional
Science and Rehabilitation, Asahi University School of Dentistry5)	D epartment of Regenerative Dental Medicine, Tokushima
University Graduate School of Biomedical Sciences6)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University (TMDU)
2)
3)

Keywords: mono-block direct composite crown, long-term,
survival rate, success rete
Objectives: To analyze the clinical performance of monoblock direct composite crown (MDCC) restoration techniquein vivo.
Methods: The longevity of the MDCCs were evaluated withthe correlations between tooth location, remaining tooth
number, and occlusion pattern. The 71 cases of MDCC
among the patients at Tashiro Dental Clinic were subjectedin this study. All MDCCs were applied to the non-vital anterior teeth without supra-gingival tooth structure using
2-step self-etching adhesive. The post cavity was not prepared, and any post material was not used for the restoration.
The whole crown structure was re-constructed with thedirect composite resin build-up technique.
Results: The average survival period was 37.0 months. The
success rate of the 71 MDCC was 92.9%, and the survival
rate was 95.8%. Only 4.2% of the cases required a new treatment plan after removal of the MDCCs and 2.8% required
the intraoral repair restoration of the fracture of the MDCCs
such as partial or whole reconstruction of the crown. The
numbers of remaining teeth and the occlusion patterntended to influence the survival period of the MDCCs.
Conclusion: MDCC restoration technique is a promisingtreatment option for the severely damaged anterior teeth.
This study was reviewed and approved by the Ethics Committee of the Tokyo Medical and Dental University;
D2020-026.
COI: ?

Adhes Dent Vol. 40 No. 2 2022

55

IAD Poster Presentation I-3

IAD Poster Presentation I-4

Effect of Silver Diammine fluoride on bondstrength of new universal adhesives

Are HEMA a n d 10-MDP necessary in thebonding agent of a 2-SEA?

Papichaya I, Yuan Y, Ikeda T, Kawamoto C,
Tanaka T, Hoshika S, Matsumoto M, Sano H

Iuchi T1), Yonekura K1), Ida Y1), Motoyama Y2),
Ikeda M3), Hamada K4), Nakajima M2), Hosaka K1)

Department of Restorative Dentistry, Faculty of dental Medicine,
Hokkaido University

1)

Objective: This study aim to evaluate the micro tensile bond	D epartment of Regenerative Dental Medicine, Tokushima
University Graduate School of Biomedical Sciences	Cariology and Operative Dentistry, Department of Restorative
Sciences, Graduate School of Medical and Dental Sciences, Tokyo
Medical and Dental University3)	Department of Oral Prosthetic Engineering, Graduate School of
Medical and Dental Sciences, Tokyo Medical and Dental University4)	D epartment of Biomaterials and Bioengineering, Tokushima
University Graduate School of Biomedical Sciences

strength (μTBS) of Silver Diammine fluoride-treated soundKeywords: HEMA, 10-MDP, micro tensile bond strength,

dentin using new universal adhesives.

water sorption test

Keywords: silver diammine fluoride, adhesive, microtensile
bond strength, SEM

2)

Methods: Twenty-four flat mid-coronal third molars (Ethics
Committee Approval#2018/9) were randomly divided into
two groups: Control and SDF group. Further divided into 4
subgroups under different approaches and adhesives following manufacturer’s instructions: self-etch (SE) or etch andrinse (ER) modes of Scothbond Universal Plus Adhesive(SBUP, 3M ESPE) or G2-BOND Universal (G2, GC corporation). All specimens were restored with resin composite andwere stored in distilled water 24 h prior the test. Data fromthe μTBS test were analyzed using one-way ANOVA andGames-Howell post-hoc test. The surface morphology wasevaluated by SEM.
Results: The μTBS of SDF groups showed significantly
lower for both adhesives in SE and ER modes (p<0.05). In
SBUP groups, both Control and SDF subgroups with ER
modes showed significantly higher μTBS than SE modes(p<0.05). SEM images of SDF groups showed remaining ofsilver particles on the dentin surface and most of the fractures modes were occurred within the adhesive. ER groups
showed fewer silver particles than SE groups.
Conclusion: SDF had adverse effect on universal adhesives
in this study.
The authors have no financial conflicts of interest to disclose
concerning the presentation.

Objectives: This study aims to investigate the effect ofHEMA and 10-MDP on microtensile bond strengths (μTBSs),
water sorption (Wsp) and elastic modulus in wet condition(Ewet) of a 2-SEA.
Methods: Clearfil SE Bond2 (SE2, Kuraray Noritake) wasused. In addition, three experimental bonding agents which
eliminate HEMA, 10-MDP, or both from SE2 original compositions were prepared as SE2-H, SE2-M, SE2-HM. The SE2
self-etching primer followed by one of the bonding agentswas applied to mid coronal flat dentin and Clearfil AP-X wasbuilt up. After 24-h water storage, μTBSs were measured.
Wsp and Ewet of polymerized bonding agents was also measured. The μTBS and Wsp values were statistically analyzed
using a t-test with Bonferroni correction at a significancelevel of 0.05.
Results: The highest μTBS was observed in order of
SE2>SE2-M=SE2-H>SE2-HM. The highest Wsp and the lowest
Ewet values were observed in the order of SE2>SE2-M,
SE2-H>SE2-HM.
Conclusion: Incorporation of HEMA and 10-MDP in thebonding agent increased the initial bond strength. However,from the result of Wsp and Ewet, it may suggest that HEMA
negatively influence the bond durability.
Ethical approval: The Ethics Review Board of Tokushima
University (329-9).
Disclosure of Conflicts of Interest: None.

56

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-5

IAD Poster Presentation I-6

Polymerization Behavior of Composites at Top/
Bottom of Cavity using Different Light Cure

Effect of new resin based dentin desensitizer
on permeability for the treatment of dentin
hypersensitivity

Yoshikawa T1), Sadr A2), Shimada Y1)
1)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University2)	D epartment of Restorative Dentistry, School of Dentistry,
University of Washington

Keywords: radiant exposure, hardness ratio, irradiance,
Knoop hardness, resin composite
Objectives: We reported homogeneous polymerization ofresin composite improved resin-cavity adaptation. Hardness
ratio near 1 show degree of conversion at the bottom surface is near that of the top surface. The aim of this study
was to evaluate microhardness and hardness ratio of various
resin composites using different light irradiance.
Methods: Light-curing unit was an LED (blue+violet LED)
light-curing unit (G-light Prima-II Plus, GC). The light-cured
resin composites were hybrid type Clearfil AP-X(AP, shade
A3, Kuraray Noritake Dental), structural color type OMNICHROMA(OC, Tokuyama Dental) and bulk-fill flowable type
GRACEFIL BulkFlo(BF, shade U, GC). Composite specimensof 2 mm thickness were polymerized in Teflon molds using
radiant exposure of 24 J/cm2. Light irradiance were 1,100
mW/cm2 22 s and 600 mW/cm2 40 s (light tip–resin distance:7 mm). Just after light curing, Knoop hardness (KHN) was
measured at the top and bottom surfaces. The hardness
ratio=KHN of bottom surface/KHN of top surface was calculated. Data (n=6) were analyzed using Bonferroni/Dunn test.
Results: Immediately after light curing, 1,100 mW/cm2 22 s
showed significantly smaller hardness ratio compared withthat of 600 mW/cm2 40 s for AP and BF resin composite(p<0.05).
Conclusion: When radiant exposure was the same, 600 mW/
cm2 irradiance light led to homogeneous polymerization ofresin composite. (This study was funded by Kuraray Noritake Dental and Tokuyama Dental.)

Adhes Dent Vol. 40 No. 2 2022

Yasuo K, Morikawa Y, Iwasaki K, Ouchi S, Onda K,
Suzuki K, Miyaji H, Hatsuoka Y, Iwata N,
Yoshikawa K, Yamamoto K
Department of Operative Dentistry, Osaka Dental University

Keywords: dentin hypersensitivity, dentin permeability,
model of hypersensitive dentin
Objectives: Considering the sealing of dentinal tubules withnew resin based dentin desensitizers, we measured the permeability

inhibition

rate

using

a

tooth

model

of

hypersensitivity.
Methods: Two new resin based dentin desensitizers;
G2-Bond Universal 1-primer (GBU) and Scotchbond Universal Plus Adhesive (SUP), and two conventional resin baseddesensitizers; G-Premio Bond (GPB), Scotchbond Universal
Adhesive (SUA) were used.
The dentin discs were prepared from extracted humanmolars as hypersensitivity model specimens. The specimens
were applied to a device produced by modifying thatreported by Pashley, and the pulpal pressure was determined to be 25 mmHg. By the dentin permeability before
and after application, the permeability inhibition rate wasmeasured.
This study was conducted with the ethical review board of
Osaka Dental University (approval number:110767).
Results: The permeability inhibition rates of GPB, GBU,SUA and SUP groups were 94.2 (±2.3), 94.1 (±2.5), 93.7(±2.8) and 92.5 (±3.2) %. There was no significant differencein permeability inhibition rates of each group.
Conclusion: It is considered that the new resin based dentin
desensitizers delivered a better sealing ability at the samelevel as conventional resin based desensitizers for dentinal
tubules.

57

IAD Poster Presentation I-7

IAD Poster Presentation I-8

Bond strength of resin composite to novel octyltype silane coupling agent

Shear bond strength to tooth structure of a newlight-cured resin cement

Nihei T1,2), Katayama Y1), Midono T1), Aoki K1),
Yamaguchi H1), Ohashi K1)

Irie M1), Maruo Y2), Nishigawa G2), Matsumoto T1)

1)

Department of Clinical Biomaterials, Kanagawa Dental University2)	M aterials & Surface Engineering Research Institute, Kanto
Gakuin University

Keywords: silane coupling agent, glass plate, tensile bondstrength
Objectives: The aim of this study is to evaluate the bondstrength and the durability against hydrolysis of novel octyltype silane coupling agent.
Methods: The used silane coupling agents were 3-methacryloyloxypropyltrimethoxysilane (3-MPS) and novel octyl-type
trimethoxysilane (8-MOS). The glass plate surface was modified by each silane at 50 mmol, and then the plates werebonded to the Bis-GMA-type self-cured resin composite. The
specimens were stored in water at 37°C until 180 days, andthen tensile bond strength was measured with a universal
mechanical testing at a cross-head speed of 1.0 mm/min.
The collected data were analyzed statistically using ANOVE
and Fisher PLSD.
Results: The glass plates modified with 3-MPS was showedsignificantly decrease of tensile bond strength after water
immersion after 28 days (p<0.05). The tensile bond strengthsof the specimens treated with 8-MOS was significantly
higher than that of 3-MPS specimens (p<0.05), and wasshowed no significantly change after water immersion for
180 days (p>0.05).
Conclusion: From these results, it was suggested that thenovel octyl-type silane coupling agent (8-MOS) showed
excellent resistance against water immersion comparedwith 3-MPS.
We have no financial relationships to disclose.

1)	D epartment of Biomaterials, Okayama University Graduate
School of Medicine, Dentistry and Pharmaceutical Sciences.
	Occlusion and Removable Prosthodontics, Okayama University
Hospital

2)

Keywords: light-cured resin cement, shear bond strength,
to human tooth, composite CAD/CAM block, durability
Objectives: The purpose was to evaluate the shear bondstrength (SBS) of four light-cured resin cement systems[HL-100C/PANAVIA V5 Tooth Primer: HL (Kuraray Noritake Dental Inc.: KND), HL-100C/CLEARFIL Universal
Bond Quick: HC (KND), RelyX Veneer/Scotchbond Universal Plus Adhesive: 3M (3M), Variolink Esthetic LC/Adhese
Universal: IV (Ivoclar Vivadent)] and one dual-cure resin
cement system [PANAVIA V5/PANAVIA V5 Tooth
Primer: KU (KND)]. The hypothesis to be tested was thatvalues of HL and HC exist greater bond values comparedthose of other materials.
Methods: The enamel (etched with phosphoric acid) anddentin surfaces were pretreated as described above. SBSs
between tooth substrates and KATANA AVENCIA Block(KND) were measured after one-day (1-D) and 20,000 thermocycles (TC). Statistical analyses were performed by t-Test(1-D versus TC, p=0.05, S: Significantly different, NS: Not
significantly different). The study protocol was approved by
the Ethics Committee of Okayama University Graduate
School of Medicine, Dentistry and Pharmaceuticals Sciences,and Okayama University Hospital (No. 1901-036).
Results: Summary: Mean (S.D., n=10, MPa)
HL

HC

3M

IV

KU

32.2 (3.0)

30.6 (5.0)

21.7 (4.2)

33.8 (4.1)

To Enamel
1-D: 34.0 (4.3)
S
TC: 28.8 (3.0)

S

S

NS

S

23.4 (2.6)

20.4 (3.6)

14.6 (1.5)

27.7 (4.5)

To Dentin
1-D: 22.5 (4.5)
NS
TC: 21.1 (3.6)

20.0 (3.3)

17.3 (3.4)

16.7 (3.9)

22.0 (3.8)

NS

NS

S

NS

18.8 (3.9)

16.6 (3.9)

10.7 (1.9)

20.2 (3.3)

Conclusion: The values of HL and HC were similar to theseof KU after 1-D and TC and showed a greater value compared those of other luting materials. The test hypothesis
was therefore accepted.
The authors declare to have no conflict of interest.

58

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-9

IAD Poster Presentation I-10

The effect of deproteinizing pretreatment on
bonding performance and acid resistance toeroded dentin

Mechanical properties of the newly-developed
cavity lining/base material containing mineral
trioxide aggregate

Yi Yang1), Inoue G1), Hosaka K2), Ikeda M3),
Shimada Y1)

Nakamura K1), Wu Chia-Ying1,2), Kobayashi A1,2),
Koike T1), Miyakuni A1), Kohda K1), Komatsu S1),
Komachiya M1), Abo H1), Kameyama A1,2)

1)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University, Japan2)
	Department of Regenerative Dental Medicine, Graduate School of
Biomedical Sciences, Tokushima University, Japan3)
	Department of Oral Prosthetic Engineering, Graduate School of
Medical and Dental Sciences, Tokyo Medical and Dental
University, Japan

Keywords: eroded dentin, micro-tensile bond strength,acid-base resistance zone, thermal cycling, deproteinizing
pretreatment
Objectives: This study evaluated the micro-tensile bondstrengths (μTBS) and acid-base resistant zones (ABRZs) ofdeproteinization solutions on eroded dentin.
Methods: Coronal dentin surfaces of sound human molars
underwent an artificial erosion procedure except foruneroded control group(C). The eroded specimens werethen assigned to groups according to treatments: without
pretreatment(E), 6%NaOCl (EN), 6%NaOCl and DC Activator (END), 50 ppm HOCl (EH), 50 ppm HOCl and DC
Activator (EHD). Clearfil SE Bond 2 (Kuraray) was used foradhesion. For μTBS test, 6-8 beams were obtained fromeach specimen after 24-hour water storage. Half of thebeams were tested immediately and the other half were
subjected to 20,000 thermal cycles (TC). Data were analyzed
using t-test in welch method with Bonferroni correction.
ABRZ formation was evaluated using SEM.
Results: There’s no significant difference between E, EH,
EHD. C and END were not significantly affected by the
aging. ABRZ was distinguished only in group C. Thickhybrid layer and voids were observed in eroded groups.
Conclusion: The use of 6%NaOCl and DC Activator could
reverse the bonding performance, to a certain extent. 50

1)	D epartment of Operative Dentistry, Endodontology, andPeriodontology, School of Dentistry, Matsumoto Dental University	Department of Oral Health Promotion, Graduate School of Oral
Medicine, Matsumoto Dental University

2)

Keywords: lining/base material, micro-shear bond strength(μSBS), compressive strength, depth of cure
Objectives: Cavity lining/base material containing trioxideaggregate was recently developed by Neo Dental Chemical
Products. The aim of this study was to evaluate some properties assumed the cavity lining in indirect restoration andcompare to the existing two commercially-available lining/base materials.
Methods: Prototype cavity lining/base material (LA-T1, Neo
Dental Chemical Products), Cavios (CAV, Neo Dental Chemical Products), and Bulk Base Hard (BBH, Sun Medical) wereused as examined cavity lining/base materials. Depth ofcure, micro-shear bond strength (μSBS) between the resin-based luting cement (Nexus Universal, Kerr), andcompressive strength of these materials were investigated.
Results: Depth of cure of LA-T1 was similar to that of CAV.
BBH was over the limit of measurement. No significant difference could not be detected between the light-curing
distance (0 mm and 4 mm) in each material. μSBS between
LA-T1 and Nexus Universal was slightly higher than that of
CAV and similar to that of BBH. Although compressive
strength of LA-T1 was similar to that of CAV, they weresignificantly less than BBH.
Conclusion: These results suggest that newly-developed
prototype cavity lining/base material LA-T1 might be able
to apply in the clinical situation as same as CAV.

ppm HOCl was not as effective as 6%NaOCl on bonding toeroded dentin.
COI disclosure statement: Kuraray Noritake Dental.
Ethical protocol No. D2013-022 approved by Human Research
Ethics Committee of Tokyo Medical and Dental University.

Adhes Dent Vol. 40 No. 2 2022

59

IAD Poster Presentation I-11

IAD Poster Presentation I-12

Influence of nanochitosan self-etch primers on
the dentin surface and in proteolytic activity

Effect of operator experience on dentin bondstrength of different adhesives

Pâmella Coelho Dias1* ), Gabriela Migotto Goering1),Isabela Barbosa Quero1), Juliana Jendiroba Faraoni1),
Francisco Wanderley Garcia de Paula e Silva 2),
Regina Guenka Palma-Dibb1)

Di Wu1), Kawamoto C1), Yamauti M1), Ito N2),
Okazaki T2), Ye Yao1), Toyama A1), Arefin Alam1),
Fei Chen3), Hoshika S1), Matsumoto M1), Tanaka T1),
Sano H1)1)	D epartment of Restorative Dentistry, School of Dentistry of
Ribeirão Preto, University of São Paulo2)
	Department of Pediatric Clinics, School of Dentistry of Ribeirão
Preto, University of São Paulo

Keywords: dentin, nanochitosan, primers
Objectives: Evaluate the proteolytic activity of experimental
self-etch primers incorporated with nanochitosan gel (NCgel)and their influence on coronal and root dentin surface.
Methods: Standardized coronal and root bovine dentin sections (n=5) were treated with different primers: C–Clearfil,
P1–without NCgel, P2–5%NCgel, and P3–10%NCgel and analyzed by SEM. Zymography evaluated the proteolytic
activity, where the root segments (n=5) were divided into
five groups: PA (phosphoric acid), C, P1, P2, and P3 and incubated in a gelatinous substrate to verify if the enzymatic
activity was due to MMP enzymes. Gelatinase activity wasevaluated in a standardized rectangular area, photographed
under a fluorescence microscope, and analyzed by densitometry using the ImageJ software. The fluorescent spots were
quantified and expressed as arbitrary fluorescence units/
mm2. Data were analyzed by ANOVA and Tukey (p<0.05).
Results: P2 and P3 showed a similar demineralization pattern of the intertubular and peritubular coronal dentin andexposed the intertubular dentin and collagen fibrils at root
dentin. Clearfil expressed more proteolytic activity thanexperimental primers (p<0.05), and there was no statisticaldifference between P1, P2, and P3 (p>0.05).
Conclusion: The incorporation of NCgel positively affected
the primers’ behavior and did not increase the activation of
MMPs.
FAPESP (2019/20997-6).

1)

	Department of Restorative Dentistry, Graduate School of Dental
Medicine, Hokkaido University, Sapporo, Japan
2)
Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan3)
	Department of Stomatology, Beijing Tongren Hospital, Capital
Medical University, Beijing, China

Keywords: dentin bonding, adhesives, bond strength,
operator
Objectives: To evaluate the effect of operator experience on
dentin microtensile bond strength (MTBS) using universal
and two-step self-etch adhesives.
Methods: Flat dentin surfaces were exposed from extracted
human sound molars (Hokkaido University Faculty of Dentistry Ethics Committee (2018-9)). Bonding agents (Clearfil
Megabond 2 and Beautibond Xtreme) were applied andresin composite build-ups were made as per the manufactures’ instruction (n=3). Three operators of different
experience levels (a PhD student-OP1/3-year experience,and 2 undergraduate students-OP2 and OP3/15-day training) independently performed the sample preparation for
the MTBS test. Samples were stored in distilled water (37°C,
24 h) and submitted to MTBS test. Fracture mode was analyzed with stereoscope and SEM. Two-Way ANOVA andTukey test were performed.
Results: MTBS to dentin was significantly affected by material (p<0.001), operator (p=0.003) and their interaction(p=0.048). Clearfil Megabond 2 showed the highest results
when OP1 and OP3 performed the bonding procedure.
MTBS of both materials was not significantly different when
Operator 2 bonded the teeth. The fracture mode was predominantly adhesive.
Conclusion: The operator experience is a relevant factor
affecting the outcomes of MTBS test for different materials.
Disclosure: The authors have no financial conflicts of interest concerning the presentation.

60

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-13

IAD Poster Presentation I-14

Bonding performance of commercial andexperimental self-adhesive resin composites todentinObservation of the cavity adaptation of a newly
developed self-adhesive resin composite by
OCT

Ye Yao, Di Wu, Tanaka T, Ikeda T, Hoshika S,
Matsumoto M, Kawamoto C, Yamauti M, Sano H

Inoue G1), Sumi Y2), Shimada Y1)
1)

Keywords: self-adhesive, resin composite, dentin,	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University (TMDU), Japan2)
	C enter for Development of Advanced Medicine for Dental
Diseases, National Center for Geriatrics and Gerontology, Japan

microtensile bond strength

Keywords: self-adhesive resin composite, gap formation,

Department of Restorative Dentistry, Graduate School of Dental
Medicine, Hokkaido University

thermal cycling, optical coherent tomography
Objectives: Self-adhesive resins were developed to simplify
the restorative procedures by eliminating the technique-sen-

Objective: This study evaluated the gap formation of asitivity of bonding procedures. This evaluated the bonding

newly developed self-adhesive resin composite (SA-100R)

performance of commercial and experimental self-adhesiveusing an Optical Coherent Tomography (OCT).

resin composites to dentin.

Methods: Dish-shaped cavities (n=24) with a diameter of 3

Methods: Sound human third molars were sectioned to

mm and a depth of 1.5 mm on bovine teeth were prepared.

remove enamel and expose mid-dentin surfaces (Hokkaido

Each cavity was filled with each of the following materials;

University Faculty of Dentistry Ethics Committee (2018-9)).

SA-100R (Kuraray Noritake Dental), Vertise Flow (VF, Kerr),

Smear layers were standardized using 600-grit-SiC paperand 1step-bond system and flowable resin composite (Cont).

(1-min) under irrigation. Three self-adhesive resin compos-

The gap formation of each specimen was observed by OCT,

ites (FIT SA, Shofu; Experimental, Shofu; Vertise Flow,and performed 10,000 thermal cycles (TC). After aging, theKerr) were applied to dentin and light-cured according togaps were assessed by OCT again. The gap distance was

the manufacturers` instructions. The specimens were stored

measured from the obtained OCT image using a softwarein distilled water (37°C; 24 h) and prepared for microtensile(Image J) and the percentages of the gap formation werebond strength test (n=4). Tooth was used as a statistical

calculated. Data was analyzed using t-test with Bonferroni

unit. Fracture mode was observed using stereoscope andcorrection.

SEM. Data followed normal and homogeneous distributions

Results: Immediately after filling, SA-100R showed lower

and were analyzed using One-Way ANOVA.

gap formation percentage (GF%) than VF, but higher than

Results: FIT SA, Experimental, and Vertise Flow groups

Cont statistically. However, after TC, there were no statisti-

showed statistically similar microtensile bond strengths

cal differences among the three groups on GF%.

(15.89±3.45; 21.49±2.18; 15.99±2.87 MPa; p=0.053). The frac-

Conclusion: SA-100R showed better cavity adaptation thanture mode was 100% adhesive.

VF. Thermal stress increased the gap formation in all

Conclusion: Within the study’s limitations, all three self-ad-groups.

hesive resin composites presented similar microtensile

COI disclosure statement: Kuraray Noritake Dental

bonding performance to dentin after 24 hours of storage.
Disclosure: The authors have no financial conflicts of interest concerning the presentation.

Adhes Dent Vol. 40 No. 2 2022

61

IAD Poster Presentation I-15

IAD Poster Presentation I-16

Shear Bond Strength of New Universal Bonding
Agent with Bioactive Function

Effectiveness of silane couplingincorporated in universal adhesive

Takebe M, Inami C, Kamimoto Y

Yoshihara K1), Nagaoka N2), Maruo Y3), Yoshida Y4)

Research & Development Department, Sun Medical, Moriyama,
Shiga, Japan

Keywords: universal bonding agent, bioactive dental
materials, bioactivity, shear bond strength, functional brush
Objectives: Presently, single-bottle universal bonding agents,
which can bond various alloys and ceramics in addition toenamel and dentin, are gaining increasing popularity for
their simplicity in clinical practice. This time, we are developing a revolutionary bonding agent; it comes with asingle-bottle universal liquid with a functional brush for bioactive and dual-cure features. In this presentation, we will
introduce the concept of such bonding agent, “bioactive (BA)bond” as we named it, along its bonding performance incomparison to the conventional counterparts. The effect of
the functional brush on the bonding strength will also be
discussed.
Methods: Based on ISO 29022, the shear bond strengths tobovine enamel and dentin, zirconia, and lithium disilicate
were evaluated for an experimental BA bond (universal
liquid and functional brush), Brush&Bond from Parkell(liquid and activator brush), and Bulk Base Liner from Sun
Medical (liquid and activator sponge) with or without the
dedicated brush/sponge. The bond strengths were measured before and after heat-cycling at 5-55°C for 5,000 times.
Results & Conclusions: In comparison to the conventionalbonding agents, the experimental BA bond exhibited statistically superior adhesion strengths to both zirconia andlithium disilicate, whilst maintaining the similar level ofadhesion to enamel and dentin. In addition, the disuse of thededicated brush/sponge was found not to impact the adhesion performance of the experimental BA bond to bovine
tooth but degraded it critically in the case of conventional
adhesives.

62

agent

1)	
National

Institute of Advanced Industrial Science andTechnology (AIST), Health Research Institute, Kagawa, Japan;
Okayama University, Graduate School of Medicine, Dentistry
and Pharmaceutical Sciences, Department of Pathology &Experimental Medicine, Okayama, Japan
2)
	Advanced Research Center for Oral and Craniofacial Sciences,
Okayama University Dental School, Okayama, Japan3)
Department of Prosthodontics, Okayama University Hospital4)	D epartment of Biomaterials and Bioengineering, Faculty of
Dental Medicine, Hokkaido University

Objectives: ‘Universal’ adhesives can be employed following
the adhesive procedure of preference (‘etch-and-rinse’; ‘selfetch’) and for both direct and indirect indications. Regarding
its indirect application, Scocthbond universal plus (3M),
Beautibond xtreme (Shofu) and BONDMER Lightless(Tokuyama Dental) incorporates a silane coupling agent inorder to chemically bond to glass-rich ceramics without theuse of a separate ceramic primer. Silane bifunctional monomers are known to be sensitive to hydrolysis and dehydration
condensation. We investigated the effectiveness of the silane
coupling function of universal adhesive using a shear bondstrength test protocol.
Methods: Silica glass plates were treated three universal
adhesives (Scotchbond Universal plus, Beautibond xtreme
and BONDMER Lightless) and Clearfil ceramic primer plus
(Kuraray Noritake) as control. Zirconia blocks were bonded
using the composite cement Panavia V5 (Kuraray Noritake)to the treated glass plates. Half number of specimens were
thermo- cycle prior to being subjected to a shear bondstrength test.
Results: The bond strength of Scotchbond universal Plus,
Beautibond xtream significantly dropped after thermo cycle.
Conclusion: BONDMER Lightless which is divided into
silane and acid revealed durable bond strength. This may berelated to silane coupling monomer being sensitive within
the adhesive to hydrolysis and dehydration condensation.

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-17

IAD Poster Presentation I-18

Effect of mold enclosure and chisel design on
fatigue bond strength of adhesive systems

Long-term bond durability of a newly developed
2-step universal adhesive in self-etch mode

Watanabe H1), Wayne W. Barkmeier2), Kawashima S1),Mark A. Latta2), Tsujimoto A3)

Tsujimoto A, Amira Elgreatly,
Nathalia Restorepo-Kennedy, Erica C. Teixeira1)	Department of Restorative Dentistry, Oregon Health Science
University School of DentistryDepartment of General Dentistry, Creighton University School of
Dentistry3)
	Department of Operative Dentistry, University of Iowa College ofDentistry2)

Department of Operative Dentistry, University of Iowa College ofDentistry

Keywords: bond durability, 2-step, universal adhesive,
self-etch

Keywords: light-curing of dental adhesives, dental
debonding, dental restoration failure

Objective: The aim of this study is to evaluate the long-termbond durability to enamel and dentin of a newly developed

Objectives: The purpose of this study is to examine theeffect of mold enclosure and chisel design on fatigue bondstrengths of adhesive systems.
Methods: Fatigue bond strength testing was conductedwith two commercially available dental adhesive systems,
Optibond eXTRa (Kerr, Orange, CA, USA) and Scotchbond
Universal (3M Oral Care, St. Paul, MN, USA), for bonding aresin composite (Filtek Supreme Ultra, 3M Oral Care) toboth enamel and dentin using mold enclosure and non-moldenclosure with a knife-edge and two sized notched-edgechisel assemblies for loading. As a loading reference for thefatigue testing, shear bond strengths of the adhesive systems to enamel and dentin were conducted using moldenclosure and a knife-edge chisel assembly.
This study, using non-identified human molars, was reviewed
by the Biomedical Institutional Review Board at Creighton
University (No. 760765-1) and it was determined that IRB
approval was not required.
Results: The bond strengths with mold enclosure using
knife edge chisel assembly did not exhibit a significant difference between the adhesive systems for either enamel ordentin. The fatigue bond strengths of bonded specimens
demonstrated significant differences when comparing mold2-step universal adhesive, G2-Bond Universal (GC, Tokyo,
Japan), in comparison with other types of adhesives in selfetch mode.
Methods: Two 2-step self-etch adhesives, Clearfil SE Bond 2(Kuraray Noritake Dental, Tokyo, Japan) and Optibond
eXtra (Kerr, Orange, CA, USA), and a universal adhesive,
ScotchBond Universal Plus (3M Oral Care, St. Paul, MN,
USA) were used for comparison. All adhesives were used tobond a resin-based composite (Filtek Supreme Ultra, 3M
Oral Care) to polished enamel and dentin surfaces. The longterm bond durability was measured using fatigue bondstrength testing. This study was conducted with the ethicalreview board of University of Iowa (202203013).
Results: G2-Bond Universal showed higher values than theother adhesives. The fatigue bond strength of G2-Bond Universal to enamel was 21.3 MPa, compared to 13.6–20.2 MPafor the other adhesives. The fatigue bond strength of G2
Bond Universal to dentin was 27.3 MPa, compared to 20.4–
23.5 MPa for the other adhesives.
Conclusion: These results suggest that G2-Bond Universal
may offer superior long-term bond durability to current
adhesive systems which can be used in self-etch mode,
regardless of tooth substrate.

enclosure and non-mold enclosure, but not between knifeedge and notched-edge chisel assemblies.
Conclusion: Fatigue bond strengths of adhesive systems
demonstrated significantly higher values when using moldenclosed bonded specimens than non-mold enclosure,regardless of type of chisel assembly.

Adhes Dent Vol. 40 No. 2 2022

63

IAD Poster Presentation I-19

IAD Poster Presentation I-20

Polychromatic composite and resin infiltration
restorations in the esthetic zone: A 5-year
clinical report

Evaluation of bonding performance of universal
adhesives to enamel utilizing a new technique

1)

1)

2)

Kawashima S , Watanabe H , Carlos A. Jurado ,Tsujimoto A3)
1)

	Department of Restorative Dentistry, Oregon Health & Science
University School of Dentistry2)	Texas Tech University Health Sciences Center El Paso Woody L.
Hunt School of Dental Medicine
3)	Department of Operative Dentistry, University of Iowa Collegeof Dentistry

Keywords: polychromatic composite, resin infiltration,

Fei Chen1), Jiang Lin1), Di Wu2), Arefin Alam2),
Yamauti M 2), Sano H 2)
1)

	Department of Stomatology, Beijing Tongren Hospital,Capital
Medical University, Beijing, China	Department of Restorative Dentistry, Graduate School of Dental
Medicine, Hokkaido University, Sapporo, Japan

2)

Keywords: microtensile bond test, double-sided microtensile
bond strength test, enamel, universal adhesive, etchingmode

esthetic
Objectives: Scotchbond Universal Plus (SBP) adhesive, theCase summary: This case report describes the combined
use of polychromatic composite and resin infiltration restorations over 5 years.
Treatment policy: The patient’s primary complaint was adesire to replace an existing stained resin composite on the
facial and mesial surfaces of the maxillary left central incisor, and a white spot on the facial surface of the maxillary
right central incisor. Removal of the previous composite restoration was completed and layered dentin, enamel andtranslucent composites were placed. Finishing and polishingprocedures were performed. The maxillary right central
incisor was treated with resin infiltration in order to remove
the white spot on the facial surface.
Progress or Consideration: The patient was pleased withthe contours, shape and shade of the polychromatic composite and with the resin infiltration restoration. The 5-year
follow-up evaluation showed that the restorations were stillin good condition.
Conclusion: Polychromatic composite and resin infiltration
restorations to replace stained composite and remove whitespot can achieve the desired results in the esthetic zone andmaintain them for over 5 years.

successon of Scotchbond Universal (SB), claims a betterbonding

strength

than

its

predecessor.

Conventional

microtensile bond strength test (μTBS) of adhesives sometimes failed to differentiate the bonding performances ofenamel. This study evaluated the μTBS of SBP and SB
using Etch-and-rinse(ER) and Self-etch(SE) employing anovel double-sided microtensile bond strength test (DμTBS).
Methods: Twelve human third molars (Ethics Committee
Approval#2018/9) were buccaly and lingually sectioned parallel to the long axis to obtain dentin-enamel discs (buccal
and lingual surfaces). The dentin-side of discs were bondedwith Clearfil SE Bond 2. Each enamel sides of the bonded
discs received either of the two following combinations:
SBP/ER, SBP/SE, SB/ER, SB/SE modes. After 24h-storage,
samples were sectioned into beams and subjected to
DμTBS. Data were analyzed by Kaplan-Meier survival analysis, followed by Log Rank pairwise comparison α=0.05.
Results: The survival analysis and the Log Rank pairwise
comparisons depicted a higher survival probability of SBP/ER among all groups, followed by SB/ER, SBP/SE, and SB/
SE (p<0.05).
Conclusion: The new DμTBS demonstrated the superiorityof Scotchbond Universal Plus over its predecessor. Applying
Scotchbond Universal Plus with etch-and-rinse mode showed
better bonding survival rate.
Disclosure: The authors have no financial conflicts of interest concerning the presentation.

64

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-21

IAD Poster Presentation I-22

Minimally invasive multidisciplinary approach toa single discolored anterior tooth

The potential of ZnO/CuO nanocomposite
contain self-etching primer on bond dentin
bonding ability

Natalia Restrepo-Kennedy1), Jose Villalobos-Tinoco2),
Carlos A. Jurado3), Tsujimoto A1)
1)

	Department of Operative Dentistry, University of Iowa College ofDentistry	Department of Periodontics, National University of Rosario Schoolof Dentistry3)	Texas Tech University Health Sciences Center El Paso Woody L.
Hunt School of Dental Medicine
2)

Keywords: bleaching, digital dentistry, veneer

Matsuda Y1), Altankhishig Bayarchimeg1),
Okuyama K2), Yamamoto H3), Saito T1)
1)	Division of Clinical Cariology and Endodontology, Department ofOral Rehabilitation, School of Dentistry, Health Sciences
University of Hokkaido
2)	Department of Dental Materials Science, Asahi University Schoolof Dentistry3)	Department of Restorative Dentistry and Endodontology, Osaka
University Graduate School of Dentistry

Keywords: nanocomposite, treace element
Case summary: This case report describes a minimally invasive multidisciplinary approach to a single discoloredanterior tooth, with internal bleaching using Washi, a gingivoplasty with a 3-dimensional (3D) printed surgical guide, andultra-thin feldspathic porcelain veneers.
**This study was conducted in accordance with all the provisions of the human subjects oversight committee
guidelines and policies of the Human Research Ethic Officeof Centro de Estudios Odontologicos de Queretaro. The
approval code issued for this study is DENT/0031-06152015.
Treatment policy: The patient’s primary concern was
improving her smile. Internal tooth whitening was accomplished with sodium perborate mixed with 30% hydrogen
peroxide impregnated in Washi and sealed in the root canalwith glass ionomer. Once the tooth bleaching was completed, the 3D printed surgical guide was placed in thepatient’s maxillary anterior region and used to guide soft
tissue re-contouring. After six months, ultrathin feldspathic
porcelain veneers were placed.
Progress or Consideration: The patient approved the color,shape and size of the final restorations, and the treatment
fulfilled her esthetic requirements. At the 4-year follow-up,
she was highly pleased with the clinical outcome, including
the closure of black triangles
Conclusion: Well-planned restorative procedures combining
internal tooth bleaching using Washi, gingivoplasty performed with electro-surgery using a 3D printed surgical
guide, and ultra-thin feldspathic porcelain veneers canachieve the desired results in the esthetic zone and remain
successful for 4 years.

Introduction: We developed the Fluoride containing Zincoxide (ZnO) and copper oxide (CuO) nanocomposite (ZCF)
with antibacterial effects. This study aimed to evaluate theeffect of ZnO and CuO nanoparticles on the dentin bondstrength using a microshear bond strength (μSBS) test.
Materials and Methods
The ZCF was prepared according to the previous study1).
Twelve bovine teeth were used in the μSBS test. A self-etchadhesive (Clearfil SE bond, Kuraray) was prepared andapplied self-etching primer with two different concentrations (1% and 5%) of ZCF and without (control), respectively,
according to the manufacturer’s instructions. After restorations with Tygon tubes,, samples were stored in water at
37°C for 24 hours. The samples were then tested by μSBS
at a 1.0 mm/min crosshead speed using an EZ-Test Machine(Shimadzu). All data were analyzed using one-way analysis
of variance followed by Tukey’s test (p<0.05).
Results and Discussion: There was no significant difference
between the material and control groups in μSBS. These
results suggest that ZCF nanoparticles do not affect dentin
bond strength in a concentration-dependent manner.
Conclusion: Fluoride-containing zinc and copper nanocomposites did not influence the strength of the self-etchingbond. Furthermore, we should also detect a suitable concentration of ZCF that may not affect the bond strength andshow an antibacterial effect.
1) Matsuda et. al.: Antibacterial effect of a fluoride-containing
ZnO/CuO nanocomposite. NUCL INSTRUM METHODS
PHYS RES B 456(1): 184-188, 2019.

Adhes Dent Vol. 40 No. 2 2022

65

IAD Poster Presentation I-23

IAD Poster Presentation I-24

Effect of antioxidant materials on enamel bondstrength after bleachingComparison of the bond strength of CAD/CAM
inlay restorations with a specific cement

Yago R, Kawamoto C, Di Wu, Suzuki K, Hoshika S,
Tanaka T, Yamauti M, Sano H

Takahashi R1), Uchiyama S1), Kanamori Y2), Rozan S1),Oda Y1), Sato T1), Shinagawa J1), Inokoshi M3),
Nikaido T4), Tagami J1,5), Shimada Y1)

Department of Restorative Dentistry, Division of Oral Health
Science, Hokkaido University Graduate School of Dental Medicine

Keywords: Bleaching, Enamel, Micro-tensile bond strength,
Colloidal Platinum Nanoparticles, Aromatic Sulfonic Acid

Objectives: Several articles reported that 35% hydrogen
peroxide decrease bond strength between resin composite
with enamel.
The aim of this study was to improve the adhesive strengthof enamel after bleaching. For antioxidant effect, Aromatic
sulfonic acid (Accel) or Colloidal Platinum Nanoparticles(CPN) were used.
Methods: Shofu Hi-lite was used for bleaching treatment.
A total of 13 human extracted anterior teeth were used. A
flat enamel surface was obtained with 600-grit SiC paper.
The teeth were then randomly distributed into 4 groups:
Group 1: No bleaching; Group 2: Bleached only; Group 3:
Bleached and then applied Accel; Group 4: Bleached andthen applied CPN. Clearfil Megabond 2 was used as thebonding agent and Clearfil AP-X was built up. Samples werestored in distilled water (37℃, 24 h) and submitted tomicrotensile bond strength (MTBS) test. One-way analysis
of variance and Tukey HSD test were used for statisticalanalysis.
Results: The results MPa were: Group 1: 28.17±10.8, Group
2: 12.79±6.1, Group 3: 18.19±7.8, Group 4: 26.39±9.9.
Conclusion: This study reveals that the MTBS reduced
after enamel bleaching. Group 4 showed higher MTBS compared with Group 2. Bond strength was improved after
bleaching possibly because of CPN’s antioxidant effect.

1)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University (TMDU), Japan
2)
	Oral Diagnosis and General Dentistry, Tokyo Medical and Dental
University (TMDU) Hospital, Japan3)
	Department of Gerodontology and Oral Rehabilitation, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University (TMDU), Japan
4)
	Department of Operative Dentistry, Division of Oral Functional
Science and Rehabilitation, School of Dentistry, Asahi University,
Japan
5)
Quartz Dental Clinic, Japan

Keywords: resin coating, ceramic primer, bond strength
Objectives: This study aimed to compare the bond strengthof CAD/CAM restorations using Panavia V5 with different
strategies to dentin.
Methods: Thirty flat human dentin surfaces were divided
into the following three groups;
Group-1) The dentin was left uncoated. After 1-week water
storage, the dentin surface was applied Panavia V5 Tooth
Primer (TP).
Group-2) The dentin surface was resin-coated with a dentin
bonding system and a flowable composite resin. After
1-week water storage, the resin-coated dentin surface wasapplied TP.
Group-3) The resin-coated dentin surface was ground. After
1-week water storage, the resin-coated dentin surface wasapplied Ceramic Primer.
All specimens were bonded to CAD/CAM resin block with
Panavia V5. Then they were subdivided into two groups;
thermocycled for 0 and 10,000 cycles. All specimens were
subjected to microtensile bond strength (μTBS) test.
Results: Two-way ANOVA revealed that strategies todentin and thermal cycling influenced the μTBS. The orderof μTBSs was Group-2>Group-1>Group-3 both in thermocycled for 0 and 10,000 cycles.
Conclusion: Resin-coated and preliminary treated with TP
were beneficial for the bonding performance of CAD/CAM
inlay restorations.
Ethical approval: The Ethics Review Board of Tokyo Medical and Dental University (D2013-022).
Disclosure of Conflicts of Interest: Kuraray Noritake
Dental.

66

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-25

IAD Poster Presentation I-26

Sintering distortion of FPDs milled from various
zirconia disks: Influence of layered structure
and vertical milling area

Morphological analysis of femtosecond laser
irradiated lithium disilicate glass-ceramics andhighly translucent zirconia - A preliminary study

Hirano M, Nomoto S, Kawasaki T, Sakai T,
Yotsuya M, Sekine H

Inokoshi M1), Yoshihara K2), Kakehata M3), Yashiro H3),
Nagaoka N4), Tonprasong W1), Xu K1), Minakuchi S1)

Department of Fixed Prosthodontics, Tokyo Dental College

Keywords: monolithic zirconia FPDs, sintering distortion,
layered structure, milling area
Objectives: Recently, zirconia with excellent color reproduction has been developed. We have investigated single
composition layered zirconia and reported that the layered
structure affects the sintering distortion. In the present
study, we investigated mixed composition layered zirconia.
Methods: An experimental FPDs was designed to simulate
a four-unit monolithic zirconia FPDs. The materials were1)	Department of Gerodontology and Oral Rehabilitation, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University2)	National Institute of Advanced Industrial Science and Technology(AIST), Health Research Institute, Kagawa, Japan; Okayama
University, Graduate School of Medicine, Dentistry andPharmaceutical Sciences, Department of Pathology &Experimental Medicine
3)	National Institute of Advanced Industrial Science and Technology(AIST), Research Institute for Advanced Electronics andPhotonics4)	Advanced Research Center for Oral and Craniofacial Sciences,
Okayama University Graduate School of Medicine, Dentistry andPharmaceutical Sciences

Keywords: lithium disilicate, highly translucent zirconia,
surface roughness, femtosecond laser

four types of zirconia disks: single-composition [SC], single-composition-layered (A3) [SCL], mixed-composition-layered[MCL-n], and mixed-composition-layered (A3) [MCL-c]. Threevertical milling areas were set according to their positions
relative to the disk thickness. The sintering distortions were
measured digitally.
Results: The degree of sintering distortions in each area wasdifferent from each other. And sintering distortions in thesame direction were observed in most of the areas, while
distortions in the opposite direction were observed in thecenter area of MCL-n and MCL-c.
Conclusion: In MCL, the aspect of sintering distortion differed depending on the milling area.
It was suggested that the choice of layered structure andvertical milling area in zirconia disks affect the sintering
distortion of monolithic zirconia FPDs.
COI?

Objective: This study aimed to determine the optimal femtosecond laser treatment settings for lithium disilicate
glass-ceramics or highly translucent zirconia ceramics interms of surface morphology.
Methods: We investigated the following two ceramics: lithium disilicate ceramics (IPS e.max CAD HT, Ivoclar
Vivadent; KATANA UTML, Kuraray Noritake Dental). Fully-sintered square-shaped specimens were prepared foreach ceramic grade. The following surface conditions were
investigated: 1) as-sintered (negative control); 2) Al2O3 sandblasted (positive control); 3) femtosecond laser-treated (dotpattern with 14 μm, 20 μm, and 40 μm line distance). 4)
femtosecond laser-treated (crossed-line pattern with 20 μm
and 40 μm line distance). Surface roughness was measured
using a three-dimensional (3D) confocal laser microscopy(LEXT OLS4100, Olympus) at 50×magnification. We calculated the surface roughness parameters (Sa and Ra) using
ProfilmOnline software (Filmetrics) at a cutoff value of 80
μm. Microstructural analysis was conducted using scanningelectron microscopy (SEM).
Results: Both surface-treated lithium disilicate glass-ceramics and highly translucent zirconia presented similar surface
morphology for each surface treatment condition. Conclusion: We choose femtosecond laser irradiation of dot orcrossed-line patterns with 20 μm and 40 μm distance aspotential candidates for further investigations.
The authors declare no conflict of interest.

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67

IAD Poster Presentation I-27

IAD Poster Presentation I-28

Effects of alumina air-abrasion on the bondstrength of ultraviolet polymerized resin to 3D
printed denture baseTensile bond strengths of different resin cement
systems to poly-ether-ether-ketone (PEEK)Tanaka A, Kawaguchi T, Tsuzuki T

Division of Removable Prosthodontics, Department of Oral
Rehabilitation, Fukuoka Dental College

Keywords: alumina air-abrasion, shear bond strength,
ultraviolet polymerized resin, 3D printed denture,
tribochemical silica coating
Objectives: The present study aimed to evaluate the effectsof alumina air-abrasion on the shear bond strength (SBS) of
ultraviolet polymerized resin to 3D printed denture base.
Methods: Specimens were printed by a digital light processing 3D printer (cara Print, Kulzer Japan) using a denturebase material (dima Print denture, Kulzer Japan). The specimens were divided into three groups based on different
surface treatments: 50 μm alumina air-abrasion, 110 μm
alumina air-abrasion, tribochemical silica coating. After
treatments, the same 3D printing denture base material was
filled into the hole of the specimens. Polymerization was performed using a light curing device (HiLite power 3D, Kulzer
Japan). The SBS was determined by a universal testingmachine.
Results: The effects of surface treatments on the SBS
showed statistically differences by an analysis of varianceand post-hoc multiple comparisons (p<0.05). The SBS valuesof 110 μm alumina air-abrasion and tribochemical silica coating were statistically higher than those of 50 μm alumina
air-abrasion (p<0.05).
Conclusion: Surface treatments with 110 μm alumina
air-abrasion and tribochemical silica coating were found tobe effective for enhancement of the bonding between 3D
printed denture base and ultraviolet polymerized resin.
(The authors have no conflicts of interest to disclose con-

Hata K1,2), Komagata Y1), Nagamatsu Y1), Masaki C2),
Hosokawa R2), Ikeda H1)
1)

	Division of Biomaterials, Department of Oral Functions, Kyushu
Dental University
Division of Oral Reconstruction and Rehabilitation, Departmentof Oral Functions, Kyushu Dental University

2)

Keywords: bond strength, PEEK, MMA-based resin
cement, composite-based resin cement
Objectives: A poly-ether-ether-ketone (PEEK) has excellent
mechanical properties while poor bonding to a resin cement.
This study aims to clarify a suitable resin cement system forbonding the PEEK.
Methods: Six brands of resin cement were used with appropriate primers; Super-Bond (Sunmedical), MULTIBOND II(Tokuyama dental), RelyX Universal Resin Cement (3M),
G-CEM LinkForce (GC), Panavia V5 (Kuraray Noritake
dental), Multilink Automix (Ivoclar Vivadent). Each cement
was bonded to a sand-blasted PEEK (Shofu) according to the
manufacturer’s instruction. After immersing the samples inwater at 37°C for 24 h, each tensile bond strength (TBS) was
measured using a universal testing machine. The obtained
TBSs were statistically compared by ANOVA followed by
Tukey’s post-hoc test (n=5, p<0.05).
Results: TBSs of the composite-based resin cements (RelyX,
G-CEM, Panavia, and Multilink) were less than 1 MPa. Meanwhile, TBSs of the MMA-based resin cements (12.9 MPa for
Super-Bonds and 9.8 MPa for MULTIBOND) were significantly higher than those of the composite-based resin
cement systems.
Conclusion: It was found that the MMA-based resin cements
well bond to PEEK rather than the composite-based resin
cements.
COI: The authors declare no conflicts of interest.

cerning this study.)

68

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-29

IAD Poster Presentation I-30

Efficacy of sandblast surface-treatment on thebonding-improvement of metal-free CAD/CAM
restoratives

Shear bond strength between highly translucent
pre-sintered zirconia coated with feldspathic
porcelain and resin luting agent

Maseki T, Murata T, Nara Y

Takata H1), Kubochi K1), Kimura F1), Matsushima K1),
Matsumura H1), Komine F1,2)

Department of Adhesive Dentistry, School of Life Dentistry atTokyo, The Nippon Dental University

Keywords: sandblasting, metal-free CAD/CAM
restoratives, tensile bond strength1)	Department of Fixed Prosthodontics, Nihon University School of
DentistryDivision of Advanced Dental Treatment, Dental Research Center,
Nihon University School of Dentistry2)

Keywords: bond strength, coating, feldspathic porcelain,
Objectives: The purpose of this study was to examine thezirconia

efficacy of sandblast surface-treatment on the bonding-improvement of metal-free CAD/CAM restoratives.
Methods: A dental sandblaster (Hi-blaster3, Shofu) and fourtypes of metal-free CAD/CAM restoratives, feldspathic
ceramic (F; VITABLOCS Mark II, VITA), lithium-disilicate
ceramic (L; IPS e.max CAD, Ivoclar vivadent), zirconiumoxide (Z; Lava Esthetic, 3M), and resin-composite (R; Cerasmart 300, GC) were used. Each restorative was groundwith a series of SiC paper up to 600 grit (as control; Pol) andthen sandblasted with two kinds of particle-size of aluminum-powder; 27 microns (B27) or 50 microns (B50).
Cylindrical resin-composite was bonded to the surfaces witha self-adhesive resin-cement (PANAVIA SA Cement Universal, Kuraray Noritake Dental). Tensile bond strengths (TBS)were measured after the storage in water at 37°C for 24hours (n=6). The data were analyzed using with ANOVA
and q-test.
Results: The mean TBS (Pol/B27/B50) in MPa were F:
8.5/15.9/15.1, L: 7.5/10.3/16.1, Z: 9.2/20.4/16.1 and R:
6.3/9.4/13.7. The TBS of B27 and B50 were significantly
greater than Pol-value and the values of blasted restoratives
increased in order R<L<F<Z.
Conclusion: Sandblasting was effective surface-treatment toimprove the bonding of metal-free CAD/CAM restoratives.
The efficacy of sandblast-treatment with different particle-sizes did vary with the restoratives. (The authors declare

Objective: The purpose of this study was to evaluate theinfluence of surface treatments on bond strength of highly
translucent pre-sintered zirconia coated with porcelain toresin luting agent.
Methods: Zirconia disks were treated as follows; coatingwith feldspathic porcelain before zirconia sintering (PZR),
coating with feldspathic porcelain after zirconia sintering(SZR). The following surface treatments were performed to
the zirconia specimens; no treatment (NT), 9.5% HF etching(HF), and airborne-particle abrasion (AB). The zirconia specimens were silanized and bonded with a resin luting agent.
The specimens were stored in distilled water (37°C, TC 0),
and half of the specimens were subjected to 5,000 thermal
cycles (between 5°C and 55°C). Shear bond strength wasthen determined.
Results: The HF and AB groups showed significantly higher
pre-thermocycling shear bond strength than the NT group.
After thermocycling, the AB group exhibited significantly
higher shear bond strength than the other surface treatment groups in the PZR specimen.
Conclusion: Airborne-particle abrasion enhanced the shear
bond strength between the pre-sintered zirconia coatedwith feldspathic porcelain and resin luting agent.
The authors declare no conflict of interest.

no conflict of interest.)

Adhes Dent Vol. 40 No. 2 2022

69

IAD Poster Presentation I-31

IAD Poster Presentation I-32

Effect of the multi-purpose primer and airborne
particle abrasion on bond durability for casttitanium and gold alloy

Adhesion and mechanical properties of PEEK
block by CAD/CAM system

1,2)

3,4)

1)

1)

Hiraba H , Koizumi H , Takehana K , Mikami W ,Nogawa H1), Matsumura H1)
1)

	Department of Fixed Prosthodontics, Nihon University School of
Dentistry2)	Division of Advanced Dental Treatment, Dental Research Center,
Nihon University School of Dentistry3)	D epartment of Dental Materials, Nihon University School of
Dentistry4)	Division of Biomaterials Science, Dental Research Center, Nihon
University School of Dentistry

Keywords: bond durability, cast titanium, gold alloy,
shear bond strength, XPS
Objectives: This study investigated the effect of a multi-purpose primer for the bond durability of an acrylic resin tocast titanium (Ti; CP Titanium JIS2) and a gold alloy (IV;
Casting Gold M.C. Type IV) after airborne-particle abrasion
with alumina.
Methods: Disk-shaped specimens of Ti and IV were castemploying the lost-wax technique. A two-liquid primer (MC;M&C primer) and two single-liquid primers (AP; Alloyprimer and VP; V-Primer) were used as surface-treatment
agents. The shear bond strength was measured at pre-/post- thermocycling to evaluate the adhesive durability, andstatistical analysis was performed using a non-parametricmethod to compare the results. The effect of the airborne-particle abrasion with alumina on the surface of thetitanium was analyzed by X-ray photoelectron spectroscopy(XPS).
Results: The results of the shear bond strength were measured pre-/post- thermocycling, and there was no significant
difference in conditions other than VP, which was significantly lower. The results of XPS showed that the
airborne-particle abrasion provided hydrophilic properties

Katayama Y1), Ohashi K1), Midono T1), Aoki K1),
Yamaguchi H1), Nagata S2), Tanimoto Y2), Nihei T1,3)
1)

Department of Clinical Biomaterials, Kanagawa Dental University
 epartment of Dental Biomaterials, Nihon University School ofD
Dentistry at Matsudo
3)
M aterials & Surface Engineering Research Institute, Kanto
Gakuin University
2)

Keywords: PEEK, CAD/CAM block, tensile bond strength,
flexural strength, dynamic hardness
Objectives: The study aimed to evaluate adhesion to luting
agents and mechanical properties of CAD/CAM blocks bydynamic hardness test and 3-point bending test.
Methods: CAD/CAM blocks used in this study were SHOFUPEEK (SHOFU), SHOFU BLOCK HC SUPER HARD(SHOFU),CERASMART

(GC),

and

RESIN

BLOCK

(YAMAHACHI), were measured with dynamic hardness
test and 3-point bending test. We evaluated adhesion toluting agents by tensile bonding test carried out with resin
luting cement of each manufacturer. The collected data
were statistically analyzed with two-way and one-way
ANOVA and Bonferroni’s multiple comparison tests.
Results: As a result, it was significant differences in bondstrength and mechanical properties of each block. Furthermore, positive correlations were observed between the tests
for the values of bond strength, dynamic hardness, flexuralstrength, and flexural modulus (p<0.05).
Conclusion: It was suggested that the adhesion to the luting
agent of PEEK blocks might be equal or inferior to resin
blocks, and the mechanical properties of PEEK blocks might
be inferior to that of resin blocks.
The authors declare no conflicts of interest associated withthis abstract.

to Ti.
Conclusion: The multi-purpose primer could be used without any problems when bonded to Ti and IV, and thatshould be used in combination with the airborne-particle
abrasion with alumina.

70

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-33

IAD Poster Presentation I-34

Clinical Effectiveness of direct composite vs.
zirconia resin-bonded fixed dental prostheses

Study on adhesive durability the luting agentsto zirconia-Appropriate concentration of acidic monomer-

Sato T1), Tashiro H1,2), Miki H3), Otani K4),
Nishimura M1,5), Takahashi M1,6), Hosaka K1,7),
Tagami J1,8), Shimada Y1)
1)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University (TMDU)
2)
Tashiro Dental Clinic
3)
Habara Dental Clinic
4)
Otani Dental Clinic
5)
Suzuki Dental Clinic
6)
Total Dental Clinic Tokyo Aoi
7)D epartment of Regenerative Dental Medicine, Tokushima
University Graduate School of Biomedical Sciences
8)
Quartz Dental Clinic

Keywords: direct composite bridge restoration, zirconia
resin-bonded fixed dental prostheses, Kaplan-Meier method
Objectives: This multicenter clinical study evaluated theclinical effectiveness of the direct composite vs. zirconia resin-bonded fixed dental prostheses (RBFDP).
Methods: This study was performed at 6 dental clinics from2008 to 2020. Two hundred fifty-four missing single teeth
were treated with direct composite RBFDP (N=219) or zirconia RBFDP (N=35). The prognosis of each case wasdefined two criteria as “Success”; without debonding andany crack, and “Survival”; without debonding. A survival
curve for each treatment was created by using the KaplanMeier method. A Cox proportional hazards model was
estimated to compare clinical longevity between the twotreatment methods.
Results: There was no significant difference between the
two treatment methods (Survival model p=0.09, Successmodel p=0.81). However, in the direct composite RBFDP, thetrend of the survival curve seemed different between the
success model and survival model.
Conclusion: For replacement of a missing single tooth, there

Tsunoi S1), Katayama Y2), Ohashi K2), Hoshi N1),
Kimoto K1), Nihei T2)1)	2)

Department of Fixed Prosthodontics, Kanagawa Dental University
Department of Clinical Biomaterials, Kanagawa Dental University

Keywords: zirconia, MDP-containing primer, tensile bondtest
Objective: The purpose of this study was investigated theadhesive to zirconia surface treated with each concentrationof acid primer containing MDP or 4-META.
Methods: The primers used in this experiment were consisted of 12 primers with different concentrations of MDP or
4-MEAT: 1% (10P-1A)～15% (10P-15A), or 1% (4M-1A)～15%(4M-15A), and control primer (0A). The zirconia surface wasdivided into two groups: polished (polishing group) and sandblasted (SB group). After each primer treatment, the zirconia
surface was bonded with resin luting agent, and then stored
in room temperature at 23°C for 1 day. The specimens wereconducted at a crosshead speed of 1.0 mm/min at tensile
bond test. The number of specimens in each group was 10.
The results obtained were statistically analyzed with oneway ANOVA, Tukey’s and Bonferroni’s test using SPSS.
Results: In the polishing group, the specimens of 10P-2A
were showed significantly higher bond strength comparedwith that of 0A (p<0.05). In the SB group, the specimens of
10P-1A and 10P-2A were showed significantly higher adhesive strength than that of 0A (p<0.05).
Conclusion: It was suggested that the primer containing
MDP at 2% was effective for zirconia surface treatment onbond strength.
We have no financial relationships to disclose.

was no significant difference in “success rate” and “survivalrate” between the direct composite RBFDP and the zirconia
RBFDP.
Ethical approval: The Ethics Review Board of Tokyo Medical and Dental University (D2020-026).
Disclosure of Conflicts of Interest: None.

Adhes Dent Vol. 40 No. 2 2022

71

IAD Poster Presentation I-35

IAD Poster Presentation I-36

Survival of the anterior mono-block directcomposite crown

Monolithic ultra-translucent multi layered
zirconia restorations in the esthetic zone

Miki H1), Tashiro H 2), Tagami J3,6), Takagaki T4),
Hosaka K5), Sato T6), Hatayama T6), Shimada Y6)

Nicholas G. Fischer1), Ahmad M. Mahrous2),
Carlos A. Jurado3), Tsujimoto A4)

1)

	Habara Dental Clinic
Tashiro Dental Clinic
3)
Quartz Dental Clinic4)	Department of Operative Dentistry, Division of Oral Functional
Science and Rehabilitation, Asahi University School of Dentistry5)	D epartment of Regenerative Dental Medicine, Tokushima
University Graduate School of Biomedical Sciences6)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University (TMDU)
2)

1)

	Minnesota Dental Research Center for Biomaterials andBiomechanics, University of Minnesota School of Dentistry	Department of Prosthodontics, University of Iowa College ofDentistry3)	Texas Tech University Health Sciences Center El Paso Woody L.
Hunt School of Dental Medicine
4)	Department of Operative Dentistry, University of Iowa Collegeof Dentistry2)

Keywords: zirconia, digital dentistry, prosthodontics

Keywords: mono-block direct composite crown, survival
analysis

Case summary: The aim of this case report is to evaluateclinical results of monolithic ultra-translucent multi layered

Objectives: In clinical practice, it is not uncommon to
encounter situations where attempts are made to save atooth that has suffered from repeated debonding of the endodontically treated tooth restoration, habitual fracture, or
secondary caries expansion. Therefore, mono-block directcomposite resin crown (MDDCs) restoration must be a treatment option for restorative teeth that have lost the ferrule
effect.
Methods: We conducted a clinical analysis using collected
data, including adhesive restorative materials and otherbaseline clinical characteristics such as the number ofremaining teeth, occlusal status, ferrule effect, periodontal
status, bruxism.
Results: Overall 98 cases of MDDCs have been observed
from May 2011 to February 2022. Of these, 44 anterior maxillary restorations (mean age: 55 years, mean number ofremaining teeth: 25) with loss of ferrule and without post
were included in the analysis. The estimated 3.7-year success rate was 84.0%, and the survival rate, including repair
bonded cases, was 93.2%.
Conclusion: The challenge of direct crown restorations withloss of ferrules, mono-block restoration concept provided by
the best adhesive technology to preserve the tooth could be
proposed.

zirconia restorations in the esthetic zone. The patient
described was fully informed on the method and the purpose. Written consent was obtained by the patient and isavailable upon request.
Treatment policy: A patient presented with the complaintof disliking her anterior crowns. Isolation was provided withrubber dam, old restorations removed, and provisional restorations were placed. At the following appointment animpression was taken. The master cast was scanned andmonolithic zirconia restorations were digitally designed.
Monolithic ultra-translucent multi layered zirconia restorations (KATANA Zirconia UTML) were digitally oriented
within the zirconia disc to have the incisal zone with thehighest translucency, the transition zone in the middle andthe lowest translucency area in the gingival third, and thenwere milled out, glazed and sintered. Restorations wereadhesively bonded according to the manufacturer’s instruction under rubber dam.
Progress or Consideration: High esthetic results for thezirconia restorations can be achieved through the procedures described above.
Conclusion: Monolithic ultra-translucent multi layered zirconia restorations in the anterior zone may provide highesthetic results similar to glass ceramic restorations.

Ethical approval: The Ethics Review Board of Tokyo Medical and Dental University (D2020-026).
Disclosure of Conflicts of Interest: None.

72

Adhes Dent Vol. 40 No. 2 2022

IAD Poster Presentation I-37

IAD Poster Presentation I-38

Fracture Strength of Chair-side CAD/CAM
Lithium Disilicate Crowns and Occlusal
Veneers with and without Margin

Diagnosis of occlusal and proximal caries using
SS-OCT

1)

2)

3)

Carlos Alberto Jurado , Damian Lee , Tsujimoto A
1)	Texas Tech University Health Sciences Center El Paso Woody L.
Hunt School of Dental Medicine. El Paso, Texas, USA.
2)	The Ohio State University College of Dentistry. Columbus, Ohio,
USA.
3)
University of Iowa College of Dentistry. Iowa City, Iowa, USA.

Keywords: crowns, occlusal veneers, CAD/CAM, Lithium
disilicate

Shimada Y1), Nakagawa H1), Tabata T1), Sato T1),
Sadr Alireza2), Sumi Y3), Tagami J1)1)	D epartment of Cariology and Operative Dentistry, Graduate
School of Medical and Dental Sciences, Tokyo Medical and Dental
University, Tokyo, Japan2)
	R estorative Dentistry, University of Washington School of
Dentistry, Seattle, USA
3)
	Department for Advanced Dental Research, Center of Advanced
Medicine for Dental and Oral Diseases, National Center for
Geriatrics and Gerontology, Obu, Japan

Keywords: caries, SS-OCT, diagnosis, sensitivity, specificity
Objectives: To determine the fracture resistance of chairside CAD/CAM lithium disilicate full crowns and occlusal

Objective: Dental caries is a dynamic process of demineral-

veneers with and without margin for premolars.

ization and remineralization of the tooth, of which the

Methods: Sixty CAD/CAM lithium disilicate restorations (20disruption results in tooth demineralization and substantial

specimens/group) were designed and fabricated with abreakdown. In early stage, caries can be prevented orchairside CAD/CAM system. The restorations were divided

arrested by simple and cost-effective interventions using

into 3 groups: (1) full coverage crown with margin at theremineralization therapy or adhesive materials. This study

gingival level; (2) occlusal veneer without margin; and (3)aimed to investigate the diagnostic accuracy of SS-OCT for

occlusal veneer with chamfer margin. Restorations were

proximal and occlusal caries.

cemented using conventional resin luting cement with

Methods: Extracted human molars with and without caries

primer system to resin printed dies, load cycled (5,000,000

up to dentin caries at occlusal or proximal surfaces wereload cycles) and then finally loaded with a steel indenter

used in this study. The usage of extracted teeth was

until fracture. Load at break (LB) and peak load (PL) until

approved by the Institutional Review Board of Tokyo Med-fracture were recorded. SEM images of the fractured resto-

ical and Dental University (approval number 725). The

rations on the printed dies were obtained.

presence and extent of caries were evaluated using SS-OCT

Results: Fracture resistance was different depending on theand digital dental radiography with visual inspection. Sensi-

design of the restoration. Occlusal veneer without margin

tivity and specificity of SS-OCT and dental radiography

displayed the highest fracture resistance (LB: 1149.25 N; PL

with visual inspection for caries were calculated and com-1219.05 N) followed by occlusal veneers with margin (LB:

pared at significance level of p=0.05.

1132.45 N; PL: 1143.30 N). Full coverage crowns showed theResults: SS-OCT showed significantly higher sensitivity forlowest fracture resistance (LB: 936.26 N, PL: 976.42 N).

both occlusal and proximal surfaces. Sensitivity of SS-OCT

Conclusion: Occlusal veneers with and without margin dis-at the occlusal surfaces for enamel and dentin caries wasplayed higher fracture resistance than conventional fullsignificantly lower than that at the proximal surfaces.

coverage crowns.

Conclusion: SS-OCT is capable of imaging dental caries forboth occlusal and proximal surfaces in vitro. Diagnostic
accuracy of SS-OCT was influenced by the caries locationand projection geometry.

Adhes Dent Vol. 40 No. 2 202273

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