Resinas Bulk fill: uma revisão da literatura

Abstract

Photopolymerizable resin based composites are the most commonly used direct restorative materials in dentistry, but because of the mechanical properties of conventional composite resins (RCC), they are limited to increments with thickness up to 2 mm. In this sense, bulk fill composites (RCBF) were developed with the purpose of simplifying the direct restorative technique, allowing larger increments. Therefore, the objective of the present work is to present a review of the literature about RCBF addressing restorative technique, mechanical properties and longevity of the restorations, comparing different RCBF to RCC. Searches were performed in PubMed and Google Scholar databases for related articles published in the last 10 years. After reading the abstracts, 20 scientific articles published between 2011 and 2018, in the portuguese and english languages, were included. The RCBF presents strategies aimed mainly to control the shrinkage of polymerization and to increase the translucency of the composite, allowing a greater depth of cure to use increments with thickness up to 5 mm. Currently there are several commercially available RCBFs with different characteristics, so in order to perform the restorative technique it is necessary to follow the manufacturer's recommendations for each one. In general, studies demonstrate that RCBFs present similar or superior results to RCC, but when they show inferior results, they are still often within the appropriate standards.