Análise da profundidade de polimerização através da microdureza em resinas compostas convencionais e Bulk Fill de diferentes viscosidades.

Abstract

Introduction: Over time, the evolution of materials is remarkable, and with this, dentists face several difficulties to choose from, Bulk Fill resins were launched as a category of resins that can be inserted in single increments. which vary from 4 to 6mm according to the manufacturer, are still low in popularity by the vast majority of professionals, so there is a need to know them better as they are constantly being debated and showing increasingly beneficial results.Objectives:: To evaluate the depth of polymerization through microhardness of different trademarks of conventional and bulk fill resins at different dentin viscosities of bovine dental elements. Methodology: 9 resin composites were used: 3 traditional composites [Filtek Z250 XT (FZXT), Tetric N-Ceram (NC) and Polofil Supra (PFS)]; 3 Bulk Fill Flow: [Filtek Bulk Fill Flow (FBFF), Tetric N-Flow (NFBFF) and X-Tra Base (XBBFF)] and 3 Modelable Bulk Fill: [Filtek One (FOBF), Tetric N-Ceram Bulk Fill ( NCBF) and Admira Fusion X-tra (AFXT)], in order to restore 180 specimens (n= 10) of bovine teeth with conical measurements (5.5mm x 4.5mm x 4mm) with high C-factor. The 180 specimens were submitted to the vickers microhardness test, and the polymerization depth obtained through the top / bottom ratio. Statistical analysis of the data was performed by the one-way ANOVA test. Results: There was no statistically significant difference between the tested brands.conclusion: Bulk fill resins showed similar behavior to conventional ones, a fact that may favor the use by clinicians and reduce the procedure time and operator failures.