OS2005 Shrinkage Analysis of Light-Cured Composite Resin

Abstract

The polymerization shrinkage of a light-cured composite resin was studied using artificial cylindrical cavities to examine the relations between the hardness H_v the cavity depth h and the irradiation time. The hardness H_v and modulus E were also measured using the tensile specimens to correlate H_v and E. The parameters H_v and E were determined as functions of h and irradiation time. An analytical model was proposed to study these parameters as functions of h and the irradiation energy.