bluuebunny/crossref_metadata_2025_split huggingface dataset:
Split-increment Technique: An Alternative Approach for Large Cervical Composite Resin Restorations
Authors: Hassan Khamis A. , Khier Salwa E. 
Published: July 2019

Abstract

Aim
This article proposes and describes the split-increment technique as an alternative for placement of composite resin in large cervical carious lesions which extend onto the root surface.

Technique
Two flat 1.5 mm thick composite resin increments were used to restore these cervical carious lesions. Prior to light-curing, two diagonal cuts were made in each increment in order to split it into four triangular-shaped flat portions. The first increment was applied to cover the entire axial wall and portions of the four surrounding walls. The second increment was applied to fill the cavity completely covering the first one and the rest of the four surrounding walls as well as sealing all cavity margins.

Clinical Significance
This technique results in the reduction of the C-factor and the generated shrinkage stresses by directing the shrinking composite resin during curing towards the free, unbonded areas created by the two diagonal cuts. The proposed technique would also produce a more naturally looking restoration by inserting flat dentin and enamel increments of composite resin of a uniform thickness which closely resembles the arrangement of natural tooth structure.

Citation
Hassan KA, Khier SE. Split-increment Technique: An Alternative Approach for Large Cervical Composite Resin Restorations. J Contemp Dent Pract 2007 February;(8)2:121-128.
The Knoop Hardness of a Composite Resin Polymerized with Different Curing Lights and Different Modes
Authors: Yazici A. Rüya , Kugel Gerard , Gül Gülsün 
Published: July 2019

Abstract

Aim
The purpose of this study was to compare the surface hardness of a hybrid composite resin polymerized with different curing lights.

Methods and Materials
Two 3.0 mm thick composite resin discs were polymerized in a prepared natural tooth mold using: (1) a conventional quartz-tungsten halogen light (QTH- Spectrum 800); (2) a high-intensity halogen light, Elipar Trilight (TL) - standard/exponential mode; (3) a high-intensity halogen light, Elipar Highlight (HL) - standard/soft-start mode; (4) a light-emitting diode, Elipar Freelight (LED); and (5) a plasma-arc curing light, Virtuoso (PAC). Exposure times were 40 seconds for the halogen and LED lights, and three and five seconds for the PAC light. Following polymerization, the Knoop hardness was measured at the bottom and the top surfaces of the discs.

Results
Significant differences were found between top and bottom Knoop Hardness number (KHN) values for all lights. The hardness of the top and bottom surfaces of both specimens cured by the PAC light was significantly lower than the other lights. No significant hardness differences were observed between the remaining curing units at the top of the 2.0 mm specimens. Significant differences were found between the LED and two modes of HL on the bottom surfaces. For the 3.0 mm thick samples, while significant differences were noted between LED and TL standard mode and between the two TL curing modes on the top, significant differences were only observed between QTH and the standard modes of TL and HL at the bottom.

Citation
Yazici AR, Kugel G, Gül G. The Knoop Hardness of a Composite Resin Polymerized with Different Curing Lights and Different Modes. J Contemp Dent Pract 2007 February;(8)2:052-059.
The Effect of Different Finishing and Polishing Systems on the Surface Roughness of Different Composite Restorative Materials
Authors: Arisu Hacer Deniz , Üçtaşli Mine Betül , Ömürlü Hüma , Eligüzeloğlu Evrim , Özcan Suat , Ergun Gülfem 
Published: July 2019

AbstractAimThe purpose of thisin vitrostudy was to examine the effect of two different finishing systems on the surface roughness of different types of composite restorative materials.Methods and MaterialsThirty specimens, 8 mm in diameter and 3 mm in depth, were prepared using a microfill composite (Clearfil ST, Kuraray Co. Ltd., Osaka, Japan), a hybrid composite (Clearfil AP-X, Kuraray Co. Ltd., Osaka, Japan), and a packable composite (Clearfil Photo Posterior, Kuraray Co. Ltd., Osaka, Japan) cured against a Mylar matrix strip to create a baseline surface. The average surface roughness was measured using a surface profilometer (Surftest 211, Mitutoyo, Japan) in five different positions on each sample before and after finishing with one of the two finishing systems [Sof-Lex discs (3M) and Po-Go (Dentsply)]. The obtained data were analyzed by two-way analysis of variance (ANOVA) at a p=0.05 significance level.ResultsThere were statistically significant differences in the average surface roughness (Ra, ìm) between the Mylar matrix strip, Sof-Lex discs, and Po-Go discs (p<0.05). For all tested materials, the Mylar matrix strip provided smoother surfaces than both of the finishing systems (p<0.05). When the finishing discs were compared, Sof-Lex discs produced a smoother surface than Po-Go discs for all tested materials (p<0.05).ConclusionThe Mylar matrix strip provided a smoother surface than Sof-Lex and Po-Go discs. Furthermore, Sof-Lex discs produced smoother surfaces than Po-Go discs. Sof-Lex and Po-Go systems produced clinically acceptable surface roughness for microfill, hybrid, and packable composite resin materials. The effect of finishing and polishing systems on surface roughness was dependent on both the system and the composite resin restorative material.CitationÜçtaşli MB, Arisu HD, Ömürlü H, Eligüzeloğlu E, Özcan S, Ergun G. The Effect of Different Finishing and Polishing Systems on the Surface Roughness of Different Composite Restorative Materials. J Contemp Dent Pract 2007 February;(8)2:089-096.
Disinfection Efficiency of Irreversible Hydrocolloid Impressions Using Different Concentrations of Sodium Hypochlorite: A Pilot Study
Authors: Memarian Maryam , Fazeli Mohamad Reza , Jamalifar Hossein , Azimnejad Ahmad 
Published: July 2019

Abstract

Aim
Dental impressions are potential sources of bacterial contamination which could eventually lead to transmissible infectious diseases through the blood or saliva. Sodium hypochlorite is an effective disinfectant recommended by the American Dental Association (ADA) in a 1:10 dilution for a ten minute immersion to disinfect irreversible hydrocolloid impressions. As the ADA protocol is sometimes neglected in busy practice settings, this pilot study was designed to determine an efficient and effective protocol for disinfection of irreversible hydrocolloid impressions.

Methods and Materials
Various concentrations of sodium hypochlorite and disinfection times were challenged against irreversible hydrocolloid impressions contaminated with six Gram-positive and Gram-negative bacteria.

Results
A two minute immersion time in a 0.6% solution of sodium hypochlorite protocol was found to prevent bacterial growth on the impressions.

Conclusion
Disinfection of irreversible hydrocolloid impressions in a 0.6% solution of sodium hypochlorite for two minutes was as effective as the ADA's protocol of using a 0.5% sodium hypochlorite solution for ten minutes to destroy the test bacteria.

Citation
Memarian M, Fazeli MR, Jamalifar H, Azimnejad A. Disinfection Efficiency of Irreversible Hydrocolloid Impressions Using Different Concentrations of Sodium Hypochlorite: A Pilot Study. J Contemp Dent Pract 2007 May;(8)4:027-034.
Prevalence Study of Signs and Symptoms of Temporomandibular Disorders in a Turkish Population
Authors: Ozan Fatih , Polat Serkan , Kara İsa , Küçük Dervishan , Polat Hidayet B. 
Published: July 2019

Abstract

Aim
The aim of this study was to evaluate the prevalence of signs and symptoms of temporomandibular disorders (TMD) in a population of 792 Turkish adults ranging in age from 15- to 72-years-old.

Methods and Materials
Subjects were examined objectively and subjectively for signs and symptoms of TMD through the distribution of frequency of the data obtained from a questionnaire and a physical examination using a similar methodology of previous studies.

Results
This study determined the prevalence of signs and symptoms of TMDs in subjects from male and female subgroups in a Turkish adult population. Both signs and symptoms of TMDs were generally more prevalent in females than in males.

Conclusion
The prevalence of signs and symptoms were generally greater than in previous studies of other populations.

Citation
Özan F, Polat S, Kara İ, Küçük D, Polat HB. Prevalence Study of Signs and Symptoms of Temporomandibular Disorders in a Turkish Population. J Contemp Dent Pract 2007 May;(8)4:035-042.
Temporomandibular Disorders Do Not Correlate with Detectable Alterations in Body Posture
Authors: Perinetti Giuseppe 
Published: July 2019

Abstract

Aim
This study aimed to determine if temporomandibular disorders (TMD) correlate with alterations in body posture detectable through posturography.

Methods and Materials
Thirty-five asymptomatic subjects and 35 TMD patients (34 males and 36 females; mean age, 27.7±8.6 years) constituted the matched control and TMD groups, respectively. Posturography was performed under four different experimental conditions: (a) eyes open with mandibular rest position (Eyes Open RP); (b) eyes open with dental occlusion (Eyes Open DO); (c) eyes closed with mandibular rest position (Eyes Closed RP); and (d) eyes closed with dental occlusion (Eyes Closed DO). The X, Y, and absolute centre of pressure displacements from the projection of a theoretical barycentre and the sway area, sway length, and sway velocity were recorded as static and dynamic posturographic parameters, respectively.

Results
Generally, no differences were found in any of these parameters between the groups and between the RP and DO within either Eyes Open/Closed conditions. The only differences were found under Eyes Closed as compared to Eyes Open, irrespective of the RP/DO conditions for dynamic and not for static posturographic parameters.

Conclusion
This study failed to show detectable alterations in body posture in TMD patients.

Citation
Perinetti G. Temporomandibular Disorders Do Not Correlate with Detectable Alterations in Body Posture. J Contemp Dent Pract 2007 July;(8)5:060-067.
A Pigmented Dentigerous Cyst in a Patient with Multiple Dentigerous Cysts of the Jaws: A Case Report
Authors: Farahani Shokoufeh Shahrabi , Lotfalian Mohammadtaghi 
Published: July 2019

AbstractAimThe aim of this article is to report an unusual and interesting case of non-syndromic multiple dentigerous cysts of the maxilla and mandible associated with melanin pigment and melanocytes in the epithelial lining in one of the cysts. In addition, embryologic aspect and origin of melanocytes are briefly discussed.BackgroundDentigerous cysts are the second most common odontogenic cysts after radicular cysts. They are usually solitary with multiple cysts reported on occasion in association with syndromes. While melanocytes and melanin-pigment are widely distributed in the skin, the nervous system, certain types of mucosa, uveal tract, and other areas, they are not normally present within bone in mammals.ReportA 37-year-old Iranian male was referred to an oral surgeon by his dentist for evaluation and treatment of multiple cyst-like radiolucent lesions around the crowns of some unerupted permanent teeth in both maxillary and mandibular anterior areas. The biopsy revealed numerous granules of melanin-pigment distributed throughout the epithelial lining of one of these cysts in addition to the characteristic histopathologic features of adentigerous cyst. Histochemical analysis confirmed the pigment was melanin, and many of the cells containing melanin were immunohistochemically positive for s-100 protein.SummaryAlthough the specific origin and pathologic significance of the melanocytes described here cannot be explained, it may be of interest for future investigations.CitationShahrabi Farahani S, Lotfalian M. A Pigmented Dentigerous Cyst in a Patient with Multiple Dentigerous Cysts of the Jaws: A Case Report. J Contemp Dent Pract 2007 July;(8)5:085-091.
Three-dimensional Surface Profile Analysis of Different Types of Flowable Restorative Resins Following Different Finishing Protocols
Authors: Yazici A. Rüya , Kugel Gerard , Müftü Ali 
Published: July 2019

Abstract

Aim
The aim of this study was to investigate the surface roughness of different types of flowable restorative resins and compare the effectiveness of diamond finishing burs followed by aluminum oxide discs with aluminum oxide discs alone in producing smooth surfaces.

Methods and Materials
Twenty-four specimens (10 mm X 2 mm) for each flowable resin (flowable microhybrid composite, flowable liquid microhybrid composite, flowable compomer, and flowable ormocer) were fabricated in an acrylic mold and randomly assigned to three groups. In group I samples were left undisturbed after the removal of a Mylar strip (control). In group II samples were polished with diamond finishing burs, followed by aluminum oxide discs. In group III samples were finished with only aluminum oxide discs. The mean surface roughness (Ra, μm) was determined with 3-D non-contact interferometry. Data were subjected to one way analysis of variance (ANOVA), and post hoc comparison was accomplished using Tukey's HSD.

Results
Although significant differences in surface roughness (Ra) values were observed among the materials using a Mylar strip (control), no significant differences between restorative materials were found when all finishing/polishing methods were combined. For all flowable restorative resins tested, the Mylar strip produced surfaces smoother than those produced by a diamond finishing bur followed by a disc or by using discs alone. Surface roughness values were statistically similar for a diamond finishing bur followed by a disc and for disc treated surfaces within each material except for Dyract Flow, a flowable compomer.

Conclusion
Although the surface roughness of flowable restorative resins differs among the types, this difference can be overcome with different finishing/polishing methods.

Citation
Yazici AR, Müftü A, Kugel G. Three-dimensional Surface Profile Analysis of Different Types of Flowable Restorative Resins Following Different Finishing Protocols. J Contemp Dent Pract 2007 July;(8)5:009-017.
Dens Invaginatus on a Geminated Tooth: A Case Report
Authors: Canger Emin Murat , Çelenk Peruze , Sezgin Ömer Said 
Published: July 2019

AbstractAimTo present a case of a concomitant occurrence of dens invaginatus (DI) and gemination in a mandibular left lateral incisor.BackgroundDI is a developmental anomaly resulting from the invagination of a portion of a crown in the enamel organ stage of odontogenesis. It is commonly found in the maxillary lateral incisors but also occurs in the central incisors, premolars, canines, and molars in descending order of frequency. The occurrence of DI in the mandible is extremely rare. Gemination results from one tooth bud attempting to split into two. Geminated teeth present with a single root structure and rarely occur in mandibular teeth.ReportA 13-year-old girl presented with a chief complaint of spontaneous nocturnal pain in the mandibular left lateral incisor tooth. Intraoral examination revealed the tooth was enlarged with a notch on the incisal edge extending to the coronal 1/3 of the crown. The radiological examination revealed a Type 2 DI in a Type I geminated mandibular left lateral incisor.SummaryDI is clinically significant due to the possibility of the pulpal involvement; pulpitis, necrotic pulps, and chronic periapical lesions are often associated with this anomaly without clinical symptoms. Clinicians should be mindful of the possibility of DI when a tooth presents pulpitis without history of trauma or caries and examine the suspicious tooth and the periodontium radiographically.CitationCanger EM, Çelenk P, Sezgin ÖS. Dens Invaginatus on a Geminated Tooth: A Case Report. J Contemp Dent Pract 2007 July;(8)5:099-105.
Effect of Light Curing Modes and Light Curing Time on the Microhardness of a Hybrid Composite Resin
Authors: Lovadino José Roberto , Ambrosano Gláucia Maria Bovi , Aguiar Flávio Henrique Baggio , Braceiro Aline , Lima Débora Alves Nunes Leite 
Published: July 2019

Abstract

Aims
The aim of this in vitro study was to evaluate the influence of light curing modes and curing time on the microhardness of a hybrid composite resin.

Methods and Materials
Forty-five Z250 composite resin specimens (3M-ESPE Dental Products, St. Paul, MN, USA) were randomly divided into nine groups (n=5): three polymerization modes (conventional - 550 mW/ cm2; light-emitting diodes (LED) - 360mW/cm2, and high intensity - 1160 mW/cm2) and three light curing times (once, twice, and three times the manufacturer's recommendations). All samples were polymerized with the light tip 8 mm from the specimen. Knoop microhardness measurements were obtained on the top and bottom surfaces of the sample.

Results
Conventional and LED polymerization modes resulted in higher hardness means and were statistically different from the high intensity mode in almost all experimental conditions. Tripling manufacturers’ recommended light curing times resulted in higher hardness means; this was statistically different from the other times for all polymerization modes in the bottom surface of specimens. This was also true of the top surface of specimens cured using the high intensity mode but not of conventional and LED modes using any of the chosen curing times. Top surfaces showed higher hardness than bottom surfaces.

Conclusions
It is important to increase the light curing time and use appropriate light curing devices to polymerize resin composite in deep cavities to maximize the hardness of hybrid composite resins.

Citation
Aguiar FHB, Braceiro A, Lima DANL, Ambrosano GMB, Lovadino JR. Effect of Light Curing Modes and Light Curing Time on the Microhardness of a Hybrid Composite Resin. J Contemp Dent Pract 2007 September; (8)6:001-008.
Bond Strength of Composite Resin Luting Cements to Fiber-reinforced Composite Root Canal Post
Authors: Lassila Lippo , Le Bell-Rönnlöf Anna-Maria , Lahdenperä Milla , Vallittu Pekka 
Published: July 2019

Abstract

Aims
The aim of this study was to compare the attachment of different composite resin luting cements to a fiber-reinforced composite (FRC) post with a semi-interpenetrating polymer network polymer matrix.

Methods and Materials
Six different brands of composite resin luting cement stubs were applied on the surface of FRC post material and light-cured for 40 seconds. Shear bond strengths of luting cement stubs were measured using a universal testing machine.

Results
The differences in shear bond strengths between the cements were not statistically significant.

Conclusion
All of the tested composite resin luting cements provided acceptable attachment to the tested FRC post. The tested FRC post material is suitable to use with different composite resin luting cements.

Citation
Le Bell-Rönnlöf AM, Lahdenperä M, Lassila L, Vallittu P. Bond Strength of Composite Resin Luting Cements to Fiber-reinforced Composite Root Canal Post. J Contemp Dent Pract 2007 September; (8)6:017-024.
Risk Factors for Traumatic Dental Injuries in an Adolescent Male Population in India
Authors: Baldava Pavan , Anup Nagaraj 
Published: July 2019

Abstract

Aim
The aim of this study was to determine the prevalence of traumatic injuries to the anterior teeth and evaluate the role of anatomic risk factors in the occurrence of such injuries in a group with an assumed behavior predisposing them to trauma.

Methods and Materials
The study population consisted of 370 male enrollees of the National Cadet Corps (NCC) in India. Risk factors such as the socioeconomic status (SES) of parents, lip coverage, incisor overjet, and the cause and nature of trauma to anterior teeth were recorded. The Chi-square test was used for testing the association between these factors. Increasing overjet was further analyzed using chi-square for linear trends. Variables found significant were subjected to logistic regression.

Results
A prevalence of 14.9% of traumatic injuries to anterior teeth was found in the study population with sports activities being the most common cause. Permanent maxillary central incisors were most commonly injured with injuries involving enamel and dentin being the most frequently observed. Increased overjet and inadequate lip coverage were significantly associated with the occurrence of trauma. With an odds ratio of 7.2 inadequate lip coverage was identified, using binary logistic regression, as the single most independent risk factor for the occurrence of traumatic injury to the maxillary anterior teeth.

Citation
Baldava P, Anup N. Risk Factors for Traumatic Dental Injuries in an Adolescent Male Population in India. J Contemp Dent Pract 2007 September;(8)6:035-042.
Total Impaction of Deciduous Maxillary Molars: Two Case Reports
Authors: Gündüz Kaan , Muğlali Mehtap , Inal Samet 
Published: July 2019

AbstractAimThe purpose of this report is to present two cases of totally impacted maxillary deciduous molars, considered a rarity in dental practice.BackgroundPrimary tooth impaction is quite rare during the development of primary dentition. Various factors contribute to the impaction of a deciduous tooth, including anklyosis, congenitally missing permanent teeth, defects in the periodontal membrane, trauma, injury of the periodontal ligament, precocious eruption of the first permanent molar, defective eruptive force, or a combination of these factors.Reports Case #1An 18-year-old male presented with a complaint of spontaneous repetitious pain in the maxillary right premolar region. The maxillary right second premolar was clinically absent. Panoramic and periapical radiographs revealed an impacted second premolar close to the inferior wall of the maxillary sinus and an impacted deciduous molar deeply embedded in bone within the maxillary sinus.Case #2A 14-year-old girl presented with a complaint of crowding of the maxillary teeth. The maxillary right second premolar and the maxillary permanent canines were clinically absent. A panoramic radiograph revealed an impacted maxillary right second premolar and an impacted deciduous molar embedded within bone close to the inferior wall of the maxillary sinus.SummaryThe total impactation of deciduous teeth is a rare condition, and few cases have been reported in the literature. The condition generally affects the mandibular second deciduous molar and the maxillary first deciduous least often. In this paper, two cases of totally impacted maxillary deciduous molars are reported.CitationGündüz K, Muğlali M, Inal S. Total Impaction of Deciduous Maxillary Molars: Two Case Reports. J Contemp Dent Pract 2007 September; (8)6:064-071.