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Type: Artigo de periódico
Title: Development of dental resin luting agents based on Bis-EMA4: bond strength evaluation
Author: Moraes, RR
Goncalves, LS
Ogliari, FA
Piva, E
Sinhoreti, MA
Correr-Sobrinho, L
Abstract: The aim of this study was to investigate the influence of incorporating Bis-EMA4 monomer into experimental Bis-GMA/TEGDMA-based resin luting agents on the bond strength to dentin. Seven mixtures were prepared with the following ratios (wt%) of Bis-GMA/TEGDMA/Bis-EMA4: 50/50/0, 50/30/20, 50/10/40, 50/0/50, 30/10/60, 10/10/80 and 0/0/100. Camphorquinone (0.4 wt%), N,N-dimethyl-p-toluidine (0.8 wt%) and hydroquinone (0.2 wt%) were dissolved in each mixture, which was loaded with silanated strontium glass fillers to a constant content of 60 wt%. Bond strength was evaluated by microshear testing (n = 10) on bovine dentin. Data were submitted to Analysis of Variance (p < 0.05). Modes of failure were classified under magnification (200x). Bond strength means (MPa), respective to each agent, were: 19.4, 19.8, 20.0, 19.1, 16.8, 18.7 and 17.8. No significant differences were detected among groups. Mixed failures were generally predominant for all materials. In conclusion, the addition of Bis-EMA4 presented no significant influence on the bond strength of the experimental resin luting agents to dentin.
Subject: adhesion
dental materials
resin luting agents
Country: Hungria
Editor: Budapest Univ Technol & Econ
Citation: Express Polymer Letters. Budapest Univ Technol & Econ, v. 2, n. 2, n. 88, n. 92, 2008.
Rights: aberto
Identifier DOI: 10.3144/expresspolymlett.2008.12
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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