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

• Main Authors: Luís FSA Morgan, Karina IR Teixeira, Walisson A Vasconcellos, Rodrigo C Albuquerque, Maria E Cortés
• Format: Article
• Language: English
• Published: Wolters Kluwer Medknow Publications 2015-01-01
• Series: Indian Journal of Dental Research
• Subjects: Cell survival; polymerization; resin cement
• Online Access: http://www.ijdr.in/article.asp?issn=0970-9290;year=2015;volume=26;issue=3;spage=284;epage=288;aulast=

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.