Effect of different edge profile, surface treatment, and glass fiber reinforcement on the transverse strength of denture base resin repaired with autopolymerizing acrylic resin: An In vitro study

Abstract

Background: This study is an effort to find the appropriate edge profile and surface treatment during repair of the fractured dentures, which can provide long-lasting results and can prevent the recurrence of the fracture. Objectives: The objective of this study was to evaluate the transverse strength of butt versus bevel edge profile with surface treatment and reinforced with glass fibers using autopolymerizing acrylic resin and to compare the samples surface treated with ethyl acetate and reinforced with glass fibers on butt and bevel edge profile. Materials and Methods: This study consisted of a sample size of 105, wherein 15 unfractured heat polymerizing acrylic resin samples were used as a control, 45 repaired samples of bevel edge profile, and 45 repaired samples of butt edge profile. These samples were further subdivided into groups and repaired using autopolymerizing acrylic resin, glass fiber-reinforced autopolymerizing acrylic resin, and with glass fiber-reinforced autopolymerizing resin surface treated with ethyl acetate, respectively. The repaired samples were tested for transverse strength on an Instron testing apparatus. The P value set at 0.05. Analysis was done using analysis of variance and Tukey's honest significant difference test. Transverse strength of samples, repaired after ethyl acetate surface treatment, was higher when compared to untreated samples (P = 0.001). Transverse strength of samples, repaired with ethyl acetate surface treatment and glass fiber reinforcement material, was the highest (P = 0.001). Conclusion: Ethyl acetate surface-treated bevel edge profile acrylic strips repaired using glass fiber-reinforced autopolymerizing acrylic resin showed greater transverse strength.