Correlation between the cytotoxicity of self‑etching resin cements and the degree of conversion.

ABSTRACT

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.