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


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.


METHODS
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.


CONCLUSIONS
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.
Luis F S A
LF
Morgan
Karina I R
KI
Teixeira
Walisson A
WA
Vasconcellos
Rodrigo C
RC
Albuquerque
Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Maria E
ME
Cortés
D000818:Animals; D002470:Cell Survival; D005347:Fibroblasts / Q000378:metabolism*; D006801:Humans; D051379:Mice; D058105:Polymerization; D019279:Resin Cements / Q000737:chemistry*
D019279:Resin Cements