DIL Q&A
KAMEMIZU CHEMICAL IND.CO., LTD.
(JAPAN)
http://kamemizu.co.jp info@kamemizu.co.jp

Characteristics
Q1: What is the dynamic impression lining material (PAT.) ?
A: It is a lining material, which functions as tissue conditioner at the beginning andstarts polymerization automatically when a dynamic functional impression is taken
after a certain period of time.
Q2: What is the merit of the dynamic impression lining material ?
A: It is a patient-friendly lining material with which patients wont have much pain orfeel strange and get used to the denture easily, because it is soft at the beginningand the surface of the functional impression starts polymerization gradually when acertain period of time passes.
Quality
Q3: When does polymerization start ?
A: If the denture is always worn, it starts 3 to 5 days after lining, and when it is takenout while asleep at night, it starts automatically about 1 week after.
Q4: How long does it take to ﬁnish polymerization once it has started ?
A: The polymerization progresses gradually taking several weeks, however as for thepart that does not contact with mucous surface directly such as peripheral edge ofthe denture plate, the polymerization progresses even more gradually. When muchof the related inner surface of the plate is removed (the thickness of the lining
material is more than 2 mm), feeling of softness continues relatively long at thespots with aphthae and bone bulges which require a temporally buﬀer.
Q5: How soft is the lining denture immediately after wearing ?
A: In the beginning it is as soft as tissue conditioner.
Q6: How hard is the lining denture ﬁnally ?
A: The polymerization progresses gradually, and ﬁnally it hardens to the extent that it
is a little softer than the self-cured resin. But the polymerization progresses evenmore gradually at the peripheral edge of the denture base.

Q7: How is it diﬀerent from the case in which tissue conditioner hardens ?
A: As tissue conditioner is the material that polymer simply swells to gel, it
becomes harder when alcohol or plasticizer is eluted, but this is nothingmore than the temporally degradation.
Polymerization of DIL stables chemically as it occurs by polymerizing reaction, sothe rough surface of the denture and so on is not likely to happen compared withthe case of tissue conditioner.
Handling
Q8: If the denture base is short ?
A: When the peripheral edge of the denture base is short, please extend it using aresin Peri-Resin Ⅱ(Kamemizu Chemical Industry) for peripheral sealing andextension of base. Spread the mixture onto the peripheral edge of the denture withan attached syringe, shape the denture border roughly with ﬁngers, then theperipheral edge can be extended easily after practicing border molding.
Q9: Is it required a bonding material, when make a lining of a denture base ?
A.: Attached surface smoothing material, New top coat has a function as thebonding material, so make sure to apply it to the new surface of the mucous
surface and the peripheral edge of the denture base.
In the case of any additional correction immediately after lining, spread resin as it iswithout applying any bonding material.
Q10: What about smoothing uneven spots and trimming ?
A: It is not possible to trim the lining denture, so smooth uneven spots using a designknife or scissors as usually done with tissue conditioner, and please apply surface
smoothing material, New top coat to the entire lining surface to make it glossy.
Q11: How to use the surface smoothing material ?
A: By applying the surface smoothing material to the denture surface, several eﬀects
are obtained, such as glossy surface, protection of the surface, improvement ofwear out tolerance and so on. Please apply the surface smoothing material, New
top coat after fully drying the lining surface. If it is not applied, the endurance ofthe lining denture becomes poor. Just after applying the material, the denture basemay irritate a little, so dry it thoroughly with air and wash it well with water.
Q12: New top coat has been applied many times, but the denture is not madeglossy.
A: Especially it often occurs at the peripheral edge of the plate. If it occurs, pleaseapply the New top coat again until the denture is surely made glossy in somehours or days after the ﬁrst application (possibly when visiting the dentistsagain). It needs in order to prevent the occurrence of the rough surface of thedenture.

Q13: The surface of the lining denture plate gets whitish.
A: As for causes, applied ﬁlm of theNew top coat

may be peeled oﬀ from thesurface of the denture base by water or denture cleanser, or tiny bubbles aregenerated.
In such cases, New top coat of the surface needs to be trimmed oﬀ, the denture
is fully dried, and then New top coat should be applied again.
How to care
Q14: What causes rough surface of the lining denture base ?
A: As for acrylic soft lining materials, such as DIL, main causes for rough surface ofthe lining denture base are that denture plaque is likely to grow, and others are as
follows;[Causes for rough surface]
1) Attached surface smoothing material New top coat is not used.
As it smoothes the surface and prevents plaque forming by crushing tiny bubbles
on the surface with coating material, so make sure to use the surface smoothingmaterial New top coat.

Just after applying the material, it may irritate a little, so dry it thoroughly with airand wash it well with water.
2) Degradation by using denture cleanser on the market
If a denture cleanser on the market is used, it may cause rough surface due todegradation of the material, so that patients should be directed absolutely not to
use it to clean their denture, while the lining denture is soft (about a week). The
reason is that bleaches and foaming agents contained in denture cleansers on themarket generate many bubbles in resin and it causes rough surface. (As for how toclean the denture, please refer to Q17)
3) Degradation caused by washing the denture with water only
Bioﬁlm adheres on the surface can not be removed by washing the denture withwater, and if it remained on the surface, calciﬁcation occurs in a long run, whichleads to rough surface and hardening of the lining denture base.
4) Degradation caused by boiling the denture
The lining denture must not be boiled, as bubbles are generated on the surface oflining denture base.
Q15: How to clean the denture after lining ?
A: Polymerization progresses gradually, and the denture remains soft considerably
long time, so plaque easily adheres to it. Therefore lining denture should be cleaned
as follows;[Note]☆As the DIL starts polymerization automatically 3 to 5 days after lining if it isalways worn in the mouth, a denture cleanser on the market such as Polident withenzyme (GlaxoSmithKline Co.) can be used after a week, and Clean Soft,exclusive use for soft resin

is not indispensable any more.

1) For a week after lining, please wash the denture lightly with water using a supersoft tooth brush. If the oral environment is especially poor as such case as drymouth, please use a denture cleanser, such as Clean Soft, exclusive use for softresin (Kamemizu Chemical Industry) while the lining material is soft.
2) A week after lining, only Polident with enzyme (GlaxoSmithKline Co.) can be usedamong cleansers on the market. Daily cleaning with Polident with enzyme isrecommended.
Please direct patients that Smokers Polident, Polident for partial denture, orother denture cleansers on the market, which removes nicotine or contains
bleaches, should not be used, as they degrade the material.
3) If the denture is stubbornly stained with nicotine, Dent-Clean, exclusive for dentalclinic use (Kamemizu Chemical Industry) is recommended to get the denture clean
by using an ultrasonic cleaner for 5 to 10 minutes.
Other
Q16: Can be used for a metal plate denture ?
A: DIL does not bond to the metallic denture plate.
If it needs to be used to the metallic plate, apply bonding agent (for example Metafast), and coat one layer of the metallic surface with a self-curing resin, and thenapply New top coat to the plate.
Q17: What is the color of DIL ?
A: Two colors, pink and ﬁber pink, are available.
Q18: How many dentures are lined per one set ?
A: One set contains powder: 50g, liquid: 45mL, New top coat: 30mL. A set of these isfor 6 pairs of upper and lower jaws, total for 12 full denture bases.
Q19: How to store ?
A: Please store it in a refrigerator or cool and dark place.
After the cap is opened, the cap should be tightened ﬁrmly for the next use, as itvolatiles.

Q20: In the morning, when the lining denture base was taken out of water from acontainer, it was hard.
A: In winter, it may get harder when taking it out of water in a container. The reason isthat it gets harder or softer depending on the temperature because ofcharacteristics of the acrylic soft resin. DIL gets softer again by bodytemperature if it is set in the mouth during 1 to 2 weeks.