Evaluate and Compare the Hardness and Tensile Bond Strength of a Silicone Soft Lining Material, after Short Term Immersion in Two Different Denture Cleansing Solutions and Water over Varying Time Periods

Abstract

Background: Background: To evaluate and compare the hardness and tensile bond strength of a silicone soft lining material, after short term immersion in two different denture cleansing solutions and water over varying time periods. Materials & Methods: The study comprised of 3 groups followed by 3 subgroups under each groups of 10 specimens for evaluation of tensile bond strength with heat cure denture base acrylic resin, and 3 groups followed by 3 subgroups under each groups of 10 specimens each for the hardness test of soft liners. Group A: Heat polymerized silicone based resilient liner immersed in denture cleansing solution secure with 700mg of sodium perborate monohydrate, Group B: Heat polymerized silicone based resilient liner immersed in denture cleansing solution clinsodent with 480mg of sodium perborate monohydrate and Group C: Heat polymerized silicone based resilient liner immersed in water. Results: At day 1 and 1 week, Group B showed highest tensile bond strength (1.500.015) and (1.12  0.012) respectively whereas at 1 month, Group C showed highest tensile bond strength (0.96  0.016). Conclusion: A significant difference exists in the tensile bond strength and the hardness values of the soft liner specimen when immersed in water and two different denture cleansing solutions between the periods of immersion.