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Evaluating resin-enamel bonds by microshear and microtensile bond strength tests: effects of composite resin

By Andrea Mello de Andrade, Sandra Kiss Moura, Alessandra Reis, Alessandro Dourado Loguercio, Eugenio Jose Garcia and Rosa Helena Miranda Grande

Abstract

OBJECTIVES: The aims of this study were to evaluate the effect of resin composite (Filtek Z250 and Filtek Flow Z350) and adhesive system [(Solobond Plus, Futurabond NR (VOCO) and Adper Single Bond (3M ESPE)] on the microtensile (μTBS) and microshear bond strength (μSBS) tests on enamel, and to correlate the bond strength means between them. MATERIAL AND METHODS: Thirty-six extracted human molars were sectioned to obtain two tooth halves: one for μTBS and the other one for μSBS. Adhesive systems and resin composites were applied to the enamel ground surfaces and light-cured. After storage (37(0)C/24 h) specimens were stressed (0.5 mm/min). Fracture modes were analyzed under scanning electron microscopy. The data were analyzed using two-way ANOVA and Tukey's test (α=0.05). RESULTS: The correlation between tests was estimated with Pearson's product-moment correlation statistics (α =0.05). For both tests only the main factor resin composite was statistically significant (

Topics: Enamel, Adhesives, Resins
Publisher: Universidade de São Paulo. Faculdade de Odontologia de Bauru
Year: 2010
OAI identifier: oai:revistas.usp.br:article/3850

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