INFLUÊNCIA DO USO DA PROANTOCIANIDINA EM UM ADESIVO AUTOCONDICIONANTE: AVALIAÇÃO DA RESISTÊNCIA DE UNIÃO

Abstract

Introduction: Adhesive systems make it possible to perform aesthetic and minimally invasive restorations, being the subject of research to circumvent the problems that arise in the restorative procedure. Objective: Evaluate in vitro the bond strength of a self-etching adhesive system, and modified with extractive grape seed solutions. Methodology: Two extractive solutions were prepared with powdered grape seed extract dissolved in acetone and ethanol. From them and an adhesive, six experimental self-etching adhesive systems were prepared, differing in terms of the solvent used and the proportions between pure adhesive and extractive solution, ranging from 7.5%, 15% and 30%. Seventy healthy bovine incisors had their roots removed with carborundum disc and the vestibular faces were worn with sandpaper with granulation water 120, 240, 600 and 1200 under refrigeration until the superficial dentin was exposed. The teeth were randomly assigned to seven different groups: Control; A7.5; A15; A30; E7.5; E15; and E30, containing 10 elements each. The application of the adhesives was carried out according to the recommendations of the manufacturer of the control adhesive. The restoration was performed with a silicone matrix with dimensions 2 mm high and 4 mm in diameter and the restorative material was inserted in a single increment and light cured for 40s. After three months stored in distilled water, the specimens were submitted to the bond strength test. The statistical method Parametric Test Anova 1 Factor and Tamhane post-test (p <0.05) were used. Results: Groups A7.5, E7.5 and E30 showed no difference in relation to the Control group; A15 and A30 showed a statistically similar performance; and E15 showed no statistical difference in relation to the other adhesives. Conclusions: The addition of proanthocyanidin had different effects, depending on the solvents and concentrations used, but without significantly altering the performance of the adhesive.