Changes in the Color of the Denture Elements After Immersion in Coffee and Denture Cleaning

Abstract

The color stability of denture elements is an essential factor in denture aesthetics. Coffee consumption may cause denture staining. Denture cleaning is a method to maintain the cleanliness of dentures. This study aimed to determine the effect of mechanical and chemical denture cleaning on the color stability of denture elements that have been immersed in the coffee solution. In this experimental laboratory study, thirty elements of an acrylic resin denture were immersed in the coffee solution for three days. Then the samples were divided into three treatment groups: mechanical, chemical, and control (n = 10). An electric toothbrush and toothpaste were used for mechanical cleaning for two minutes. In chemical cleaning, dental elements were immersed in a solution of Polident denture cleanser for three minutes. For the control group, the rest was immersed in distilled water for three minutes. The color intensity was measured using a UV-2401 spectrophotometer. The data were analyzed using one-way ANOVA. There was no significant difference in color intensity between mechanical and chemical denture cleaning (p > 0.05). Denture cleaning both mechanically and chemically brightened the color of denture elements that have been exposed to the coffee solution.