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The effect of cigarette smoke and denture
cleansers on the surface hardness and color
of acrylic resin glaze
Authors :
- Nathawat Pleumsamran D.D.S., MSc.
- Roongaroon Apinan D.D.S.,MSc.
- Panarat Kodkeaw D.D.S., MSc.
- Piyawat Phankosol D.D.S.,M.S., Ph.D.
Abstract :
Objective To study the effect of cigarette smoke and denture cleansers on the color and the surface
hardness of acrylic resin sheets with or without surface treatment.
Materials and methods Two hundred specimens of 15 x 15 x 3 mm. acrylic resin sheets were
divided into four surface treatment groups (conventionally polished with polishing wax as a control
group, Bosworth GlazeTM, Palaseal® and Plaquit coated groups). The color and surface hardness were
measured before and after cigarette smoke staining. Then, each group was divided into five subgroups
for immersion in water and other four denture cleansers (Bonyplus, Fitty®Dent, Polident and Steradent).
The color and surface hardness were redetermined. Data were analyzed for color test after cigarette
smoke staining and after immersion in denture cleansers using One-Way Analysis of Variance and
Two-Way Analysis of Variance, respectively with Tamhaneûs multiple comparison. Paired sample
T-test (α = 0.05) was used to analyze the data from surface hardness test.
Results The color change due to cigarette smoke in all glazed groups were significantly less than the
control group while the denture cleansers did not significantly affect the color changes. However, the
conventionally polished control groups showed significantly different in color change when immersed
in water. According to the surface hardness test, application of Plaquit produced the hardest surface
while the surface treated with Bosworth GlazeTM exhibited the lowest surface hardness. After staining
and denture cleansers immersion, all glazed groups and control group exhibited changes in the surface
hardness values except the surface treated with Palaseal® that was not different from the beginning.
Conclusion The color change due to cigarette smoke in the conventionally polished with polishing
wax group of acrylic resin was more than the glazed groups. All denture cleanser in every glazed group
did not affect the color change. All glazing materials affect the surface hardness of acrylic resin both
before and after denture cleansers immersion.
(CU Dent J. 2010;33:77-88)
Keywords :
acrylic resin; cigarette smoke; denture cleanser; glazing; staining; surface hardness
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