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Statement of Problem: Water can be used as a saliva replacement, but it is not adequately effective in moistening and lubricating the oral mucosa. Good wetting of the denture base material by the saliva substitute is critical for optimum retention of the upper complete dentures. Purpose: The purpose of the study was to compare wettability of distilled water and four saliva substitutes on DPI heat cure acrylic resin. Materials and Methods: A total of 200 heat-cured acrylic samples were prepared of dimensions 2.5 × 1.5 × 2 mm. They were divided into five groups (40 samples in each group), and advancing and receding contact angles were measured using contact angle goniometer. Results: The obtained values for advancing and receding contact angle and the resultant value of angle of hysteresis were subjected to statistical analysis. ANOVA was performed, which showed statistically significant values. Conclusion: The wettability of saliva substitute aqwet was found to be better as compared to other saliva substitutes and distilled water on heat-cured acrylic resin used in the study.

An in-vitro comparative study of wettability of four commercially available saliva substitutes and distilled water on heat-polymerized acrylic resin