The Role of Resin Cement on Bond Strength of Glass-fiber Posts Luted Into Root Canals: A Systematic Review and Meta-analysis of In Vitro Studies

Abstract

Because there are several ways to cement glass-fiber posts (GFPs) into root canals, there is no consensus on the best strategy to achieve high bond strengths. A systematic review was conducted to determine if there is difference in bond strength to dentin between regular and self-adhesive resin cements and to verify the influence of several variables on the retention of GFPs. This report followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. In vitro studies that investigated the bond strength of GFPs luted with self-adhesive and regular resin cements were selected. Searches were carried out in the PubMed and Scopus databases. No publication year or language limit was used, and the last search was done in October 2012. A global comparison was performed between self-adhesive and regular resin cements. Two subgroup analyses were performed: 1) Self-adhesive × Regular resin cement + Etch-and-rinse adhesive and 2) Self-adhesive × Regular resin cement + Self-etch adhesive. The analyses were carried out using fixed-effect and random-effects models. The results showed heterogeneity in all comparisons, and higher bond strength to dentin was identified for self-adhesive cements. Although the articles included in this meta-analysis showed high heterogeneity and high risk of bias, the in vitro literature seems to suggest that use of self-adhesive resin cement could improve the retention of GFPs into root canals.

MMP Inhibitors on Dentin Stability

“…The risk of bias evaluation was based on and adapted from a previous study (Sarkis-Onofre et al, 2014) and evaluated according to the description of the following parameters for the study's quality assessment: randomization of teeth, use of teeth free of caries or restoration, materials used according to the manufacturer's instructions, adhesive procedures performed by the same operator, description of sample size calculation, and blinding of the operator of the testing machine. If the authors reported the parameter, the paper had a Y (yes) on that specific parameter; if it was not possible to find the information, the paper received an N (no).…”

Long-term bond strength of a self-adhesive resin cement to intraradicular dentin pretreated with chlorhexidine and ethanol

“…Moreover, water is then reused via a reaction with functional acid groups, and also during the reaction of the cement, resulting in a hydrophobic matrix. The bond obtained relies upon the micro-mechanical retention and chemical interaction between the acid monomer and hydroxyapatite groups 4,21 .…”

Effect of cementation protocol on push-out bond strength of fiber posts to root canal

“…A recent systematic review of in vitro studies showed that SARC use could improve the retention of GFPs into root canals [26]. Furthermore, self-adhesive cements have demonstrated clinical outcomes similar to conventional multi-step cementation procedures [27,28].…”