Comparative evaluation of interfacial gaps at the dentin-restorative interface using different bulk fill composites through optical coherence tomography

Abstract

The main problem faced by composites is polymerization shrinkage and stresses which depends on multiple factors such as the configuration factor, composition of resin composites, material properties, various incremental placement techniques and different modes of curing. The aim of this in-vitro study was to evaluate interfacial gaps at dentin- restorative interface with different Bulk-fill composites using a new non-invasive technique, optical coherence tomography (OCT). Our null hypothesis was that there would be no difference in marginal adaptation to the cavity floor between different bulk fill resin composites.