The Influence of Thermal Cycling on the Mechanical Properties of Posterior Restorative Composite Resins

Abstract

The influence of thermal cycling and water immersion on the mechanical properties of posterior restorative composite was resins investigated.Six commercially available dental composites were chosen, and after storing samples in distilled water at 37℃ for 24hours, a thermal cycling test(37℃, 60℃, 37℃, 4℃)was performed at 2, 000, 10, 000 and 20, 000cycles for compressive samples and 10, 000cycles for transverse and diametral samples.Deterioration by thermal cycling was observed on the compressive yield strength of CP, P10, BF and MJ and transverse strength of CP, P10, IM and PF.