Intracoronal stress transfer through enamel following RBC photopolymerisation: A synchrotron X-ray study

Dental resin based composite materials exhibit a volumetric shrinkage associated with polymerisation that, when constrained by adhesion to the tooth cavity walls, leads to the generation of shrinkage stresses within the tooth-composite complex. Shrinkage stresses have been measured directly in-vitro and it has been identified that the magnitude and kinetics of their development are dependent on a number of factors, including in particular, the composite composition and resin chemistry [1,2], photo-polymerisation variables [3 –5] and the terminal degree of monomer to polymer conversion [6–8].
Source: Dental Materials - Category: Materials Science Authors: Source Type: research