Avaliação da microdureza vickers de dois compósitos variando a composição e o ciclo de fotopolimerização.

Abstract

Evaluation of Vickers microhardness of two composites varying the composition and the light curing cycle. Composite resins represent restorative materials most used for rehabilitation of dental cavities in anterior teeth. To this need in the composition of filler particles which provide improved surface smoothness, making the polishing procedure, while contributing to the increase in the mechanical strength. The aim of this study was to compare the compressive strength of two composite resins used in the School Clinic of Dentistry Ducks at Federal University of Campina Grande, with different loads, the Llis® (FGM), recognized as the R1 and FillMagic® (Vigodent - SP), recognized as R2 varying the curing cycle. 60 specimens of the two brands studied were made according to ISO 4049, using the same light curing unit. The specimens were subjected to measurement of Vickers Hardness after curing. Data were analyzed with SPSS (version 21) software and after the application of statistical tests of Kruskal Wallis and Mann Whitney. Was accepted as significant, p ≤ 0.05. According to the results obtained and after application of statistical tests, it was observed that for the composites studied the polymerization by continuous cycle (C1) promoted specimens with little variation in median, and mainly for Llis resin (R1), presented statistically significant difference when compared to ramp cycle (C2) and pulsed cycle (C3).