Post-curing in dental resin-based composites

A paradigm shift in the field of dentistry occurred with the introduction of photo-cured resin-based composites (RBCs) as an alternative to amalgam in dental restorations [1 –3]. The main driving force is that the restored teeth can look like a natural decay free tooth. Due to the fundamental nature of the resin used in RBCs, after photo-curing, polymerization-induced shrinkage strain develops with time. This produces shrinkage-induced stress within the cavity walls o f the teeth [4]. There is evidence that such stresses may result in enamel cracking and tooth post-operative pain [5], margin debonding [6], secondary caries [7], and premature failure of the restoration [8].

Source: Dental Materials - June 22, 2018 Category: Materials Science Authors: William Germscheid, Louis Gosse de Gorre, Braden Sullivan, Catherine O ’Neill, Richard B. Price, Daniel Labrie Source Type: research