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Published on: November 9, 2014
Correlation between the cytotoxicity of self-etching resin cements and the degree of conversion
Luis F S A Morgan, Karina I R Teixeira, Walisson A Vasconcellos
1Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Aim:
The aim of this study was to evaluate the correlation between the cytotoxicity and degree of conversion (DC) of self-etch resin cements with or without photopolymerization.
Materials And Methods:
Three self-etching resin cements with or without photopolymerization were evaluated. Six test groups and one control group represented by a standardized L929-fibroblast cell culture were formed. The DC was measured by Fourier transform infrared spectrometry and was correlated with cell culture survival.
Statistical Analysis:
The analysis of variance and Bonferroni-Holm tests were applied (P < 0.05).
Results:
The results show that, the cytotoxicity of self-etching resin cements is directly related to the DC. With the exception of Unicem, the other cements show some level of cytotoxicity, even with photopolymerization.
Conclusion:
These results indicate that photopolymerization of dual cure self-etching resin cements decrease toxic effects on cell culture. Adequate photopolymerization should be considered during cementation when using dual polymerization self-etching resin cements.
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