Comparison of Debonding of Different Composite Resin Bonds and Acrylic Tooth with Acrylic Denture Base after Thermocycling Regimes.

Abstract

Background and objectives: The purpose of this study was to repair detached acrylic tooth using composite resin and comparing it debonding with cold cure acrylic after thermocycilg process. Methods: Materials used in the study include: four composite groups (Ceram, Composan, ESTELITE and Dynamic Plus) with a single group of acrylic artificial teeth bonded to acrylic (n=10). Specimens have tested the thermocycling then specimens were subjected to stress using a universal testing machine. Results: The outcome data statistically were analyzed, results showed that (ESTELITE) Tokoyama, brand has the highest value of tensile bond strength (7.05 MPa), and the lowest one Cerama brand with the (5.12 MPa) mean composite groups, but the cold cure acrylic one with the (2.07 MPa). Conclusion: Replacement of missing artificial teeth on the denture base with a different brand of composite can be done as an alternative to acrylic teeth and the thermocycling regime influence the debonding process. Keywords: Composite Resin, Artificial Teeth, Denture Base, Thermocycling, Debonding.