The effect of enzymatic denture cleanser on the physical properties of different types of denture base resin materials

Aim: To evaluate the effect of Denture Cleansers on the properties of Conventional, High impact strength and Flexible denture base materials. Materials and Method: A total of ninety disc shaped resin specimens (20mm×3mm) of different denture base materials [Trevalon Polymethyl Methacrylate (PMMA), Valplast and Trevalon HI (High Impact)] were prepared. Commercially available denture cleansers and the control were categorized into three groups [Group I-distilled water, Group II-0.5% Sodium Hypochlorite (NaOCl) and Group III-Daiso enzymatic cleanser] used for the immersion of these specimens. The physical properties like color stability, surface roughness and micro-hardness for each specimen was evaluated at the baseline and after six months. The data obtained was statistically analyzed using Repeated Measure Anova test and post-hoc test. Results: There was significant change in color and micro-hardness among three denture base resins when immersed in cleansers from baseline to six months. The surface roughness of denture base resins was not within the clinically acceptable range. Conclusion: The selection of denture cleanser should consider the duration of immersion, concentration of solution, temperature of the solution, material properties and its chemical composition.