Effect of cigarette smoke on acrylic resin teeth

Abstract

Background: The discolouration of artificial teeth, which hampers aesthetics, is one of the negative effects of cigarette smoking. Therefore, the effect of cigarette smoke on the colour stability of commercially available acrylic resin teeth needs to be evaluated for clinical success and to ascertain as to which brand has superior properties.

Material and methods: Three commercially available acrylic teeth were evaluated, after division into Group A (Premadent), Group B (Astra), and Group C (Sanyo- Dent). Selected brands were subdivided as study group and control group. Each set of acrylic resin teeth were stored in artificial saliva at 37±1°C for 24 hours. After 24 hours of immersion, the colour measurement of each tooth (T0) was performed. Second colour measurements were done after 21 days (T21) of exposure to cigarette smoke for study group and after immersion in artificial saliva for control group. All data was statistically analyzed by using Repeated Measures ANOVA and Two-way ANOVA (p<0.05).

Results: Group A showed least total colour change on exposure to cigarette smoke, followed by Group B and Group C had the highest total colour change. In control group, after immersion in artificial saliva, a slight increase in total colour change was observed for all groups, which was clinically acceptable.

Conclusion: Group A (crosslinked acrylic resin teeth) was more colour stable and more resistant to the discolouration which was caused by cigarette smoke, followed by Group B (crosslinked acrylic resin teeth). Group C (Non-crosslinked acrylic resin teeth) was least colour stable and most susceptible to discolouration which was caused by cigarette smoke.

Keywords: Acrylic resin teeth; Cigarette smoke; Colour stability.

[Table/Fig-1]:

Smoking machine

[Table/Fig-2]:

Study group specimens inside smoke chamber and 6 division markings of smoke chamber

[Table/Fig-3]:

Smoke chamber with vaccum system

[Table/Fig-4]:

Smoke chamber filled with smoke

[Table/Fig-5]:

Colour testing

[Table/Fig-8]:

Comparison of mean change in ΔE values of Group A, Group B and Group C specimens after 21 days, relative to baseline