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Type: Artigo de periódico
Title: Microtensile Bond Strength Of Methacrylate And Silorane Resins To Enamel And Dentin
Author: da Silva G.R.
Araujo I.S.
Pereira R.D.
Barreto B.C.F.
do Prado C.
Soares C.J.
Martins L.R.M.
Abstract: The aim of this study was to evaluate the microtensile bond strength (μTBS) of two substrates (enamel and dentin) considering two study factors: type of composite resin [methacrylate-based (Filtek Supreme) or silorane-based (Filtek LS)] and aging time (24 h or 3 months). Twenty human molars were selected and divided into 2 groups (n=10) considering two dental substrates, enamel or dentin. The enamel and dentin of each tooth was divided into two halves separated by a glass plate. Each tooth was restored using both tested composite resins following the manufacturer’s instructions. The samples were sectioned, producing 4 sticks for each composite resin. Half of them were tested after 24 h and half after 3 months. μTBS testing was carried out at 0.05 mm/s. Data were analyzed by three-way ANOVA and Tukey's HSD tests at α=0.05. Significant differences between composite resins and substrates were found (p<0.05), but no statistically significant difference was found for aging time and interactions among study factors. The methacrylate-based resin showed higher μTBS than the silorane-based resin. The μTBS for enamel was significantly higher than for dentin, irrespective of the composite resin and storage time. Three months of storage was not sufficient time to cause degradation of the bonding interaction of either of the composite resins to enamel and dentin.
Editor: Associacao Brasileira de Divulgacao Cientifica
Rights: aberto
Identifier DOI: 10.1590/0103-6440201300009
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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