The Effect of Different Curing Techniques on the Degree of Bond Conversion for Different Types of Acrylic Resin Materials


Aims: To evaluate the effect of different types of curing techniques on the degree of bond conversion of methyl methycrylate to poly methyl methacrylate for different types of acrylic resin materials. Materials and methods: Three different types of acrylic resin materials are used; heat, cold and light cured resin, with four different curing techniques (auto, heat, microwave and light curing).The degree of bond conversion of these materials(taking the mean of three samples) were determined by fourier transform infrared device (FTIR). Independent t-test and ANOVA followed by Duncan Multiple Range Test were used to determine the significant difference at p<0.05 level. Results: There was a significant difference (p<0.0001) in the degree of bond conversion yielded from the three tested materials. Degree of bond conversion higher in light and heat cure acrylic than that of cold cure acrylic resin. Conclusions: Degree of bond conversion increased when curing done under high temperature as in microwave or heat curing method. However, light cure resin showed the highest degree of bond conversion.