Eficácia do tratamento de superfície na adesão de resinas compostas indiretas: revisão sistemática

Abstract

Composite resins have evolved a lot since incorporation and the improvement in their properties has made their use in extensive restorations possible. The union of the indirect composite resin to the cementing agent, however, is still challenging, as there is no well-established cementation protocol. The aim of this study was to systematically review the literature regarding the effectiveness of different surface treatments of indirect composite resins on the bond strength to resin cement. Searches were carried out in the following databases: pubmed, embase, scopus and web of science. The following terms were used for the search strategy: indirect composite resin, indirect composite resin, indirect composite resin, bond strength, microshear bond strength, microtensile strength, shear strength and tensile strength. Of the 749 articles found, 467 were repeated and were excluded. Of the remaining articles, 16 were selected after reading the title and abstract and five after reading the full text. One more article was included from the search carried out in the gray literature, through the google academic platform. In accordance with the eligibility criteria, six in vitro studies were selected in the end, which evaluated the bond strength between indirect composite resin and resin cement. The surface treatments evaluated independently or associated were: phosphoric acid, hydrofluoric acid, silane, sandblasting with aluminum oxide particles and laser use. The studies showed divergent results, however, it was possible to observe a consensus that adhesion in indirect composite resins depends on a rough surface capable of promoting mechanical retention. More studies are needed to answer the question posed in this systematic review.