Effect of pre-heating on the mechanical properties of silorane-based and methacrylate-based composites

Abstract

Preheating Silorane enhances the composite's microhardness and elastic modulus but does not affect its flexural strength. On the other hand, preheating Z250 increases its microhardness but does not change its flexural strength or elastic modulus. In addition, the Z250 composite shows higher microhardness and flexural strength than Silorane, but the elastic modulus values with preheating are similar. Therefore Z250 seems to have better mechanical properties making it the better choice in a clinical situation. <b>Key words:</b>Composite, elastic modulus, flexural strength, microhardness, preheating.