EFFECT OF GRAPE SEED EXTRACT ON BOND STRENGTH OF RESTORATIVE MATERIAL TO BLEACHED ENAMEL
Journal Title: Revista Científica do CRO-RJ / Rio de Janeiro Dental Journal - Year 2018, Vol 3, Issue 3
Abstract
Objective: The aim of this study was to evaluate the effect of different concentrations of a natural antioxidant (grape seed extract) on the bond strength of the restorative material to the bleached enamel. Methods: Forty fragments of healthy bovine incisors were randomly divided into four groups (n = 10): Group I: no bleaching; Group II: Bleaching with 35% hydrogen peroxide (HP) and without post-treatment; Group III: Bleaching with 35% HP + 5% grape seed extract; and Group IV: Bleaching with 35% HP + 10% grape seed extract. The bond strength at the adhesive interface was evaluated using the shear test (MPa). The data were analyzed by the analysis of variance (ANOVA) and Tukey test ( =0.05%). The fracture types were also analyzed and classified into: adhesive, cohesive or mixed. Results: Only Group III (bleached + 5% grape seed extract) had a significant increase (p<0.001) in bond strength values when compared to Group II bleached, without post- reatment). All groups showed a predominance of the adhesive type of fracture. Conclusion: It could be concluded that tooth bleaching decreases the bond strength to bleached enamel and 5% grape seed extract applied after dental bleaching improves the bond strength between the restorative material and the bleached enamel.
Authors and Affiliations
Keille Adriene de Castro Pereira, Ana Luisa Botta Martins de Oliveira, Aline Evangelista de Souza Gabriel, Silmara Aparecida Milori Corona, Renata Siqueira Scatolin
Keywords
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