Effect of Different Commercially Available Denture Cleansing Agents on the Color Stability of Heat-Cure Denture Base Material

Aim and purpose: The aim of the present study is to evaluate the effect of 4 commercially available denture cleansers on the color stability of heat cure acrylic resin at different time intervals. Materials and method: Total of 45 heat cure acrylic resin specimens, measuring 10 9 10 9 2 mm were fabricated and randomly divided into 5 groups- Group A (Polident); Group B (Efferdent); Group C (Clinsodent); Group D (Fittydent) and Group E (distilled water as Control) comprising of 9 samples each. After recording the baseline values the specimens were then immersed in their respective cleansing solutions for 8 h, rinsed thoroughly and immersed in distilled water for 16 h at room temperature. This procedure was repeated every day and the color change was evaluated after 90, 180 and 365 days interval using a colorimeter in a standard “Commission International de l’Eclairage” color system. Results: All the groups exhibited slight color change (DE) which are within an acceptable range as described by National Bureau of Standards (NBS Units). Also, the color change (DE) was slightly higher for immersion period of 180 days compared to that of 365 days for all the tested groups. Summary and conclusions: These results suggest that the color stability of denture base resin material depends upon the type of denture cleanser used and the immersion period.