Abstract
This study investigated the influence of environment on the fatigue properties of Dental Hybrid Composite Resins. The fatigue tests of two kinds of Composite Resins were conducted under three kinds of environments; air, physiological salt solution (0.9% NaCl) and ethanol solution (10mass%). The influence of soaking condition on fatigue properties was also investigated. Testing temperature was selected as 37℃. It was found that there was much influence of environment on both mechanical and fatigue properties; especially the influence of ethanol solution on the fatigue strength was more significant than that under the other environments. This was caused by the degradation of the interfacial strength between filler and matrix.
