Year : 2022

Volume : Volume 13

Issue : Issue 4

Address for correspondence :
Kunchala Sailasri
tejasrockzz02@gmail.com

Abstract

Aim: Two commercially available denture base materials were subjected to compression molding to evaluate their dimensional change and f lexural strength. Materials and Methods: Using Triplex, Triplex reinforced with metal mesh, and Pyrax, a total of 33 denture bases were created. For Triplex, Triplex reinforced with metal mesh, and Pyrax, 33 bar specimens were manufactured and divided into three groups of 11, each. In a thermocycler, 2500 cycles of heat changes are applied to all specimens kept in artificial saliva. The dimensional change was measured using digital caliper and flexural strength is measured by subjecting the specimens to three point bend test. Results: The collected data were analyzed using SPSS version 23.0. One-way ANOVA test was applied for three group comparisons (between group) and post hoc Tukey test for pairwise comparisons. Conclusion: The dimensional change in acrylic resin materials was significantly affected by thermocycling. Denture base resin that is reinforced with a metal mesh greatly improves its flexural strength. Triplex with mesh showed the lowest dimensional change followed by pyrax and the Triplex.

Keywords: Artificial saliva, Digital caliper, Dimensional change, Flexural strength, Thermocycler, Universal testing machine.