Abstract
This study evaluates the effect of zinc methacrylate (ZM) on the degree of conversion (DC), cytotoxicity and antimicrobial activity (AA) of an experimental resin. Tetraethyleneglycol dimethacrylate was used as the experimental resin and it was photo activated using camphoroquinone and ethyl 4-dimethylamine benzoate. Additionally, 1.0, 2.5, 5.0, 10, 20 and 30 wt% of ZM was added to the various experimental resins. The DC was accessed by Fourier Transform infrared spectroscopy. For cytotoxicity, immortalized mouse fibroblasts were exposed to the experimental resin extracts. An MTT assay was used to access the cytotoxicity. The AA against Streptococcus mutans UA159 was accessed by the agar diffusion method. An improvement in the DC in all concentrations of ZM was observed. The greater the amount of ZM on the experimental resin, the less the cytotoxicity was provoked. Three ZM concentrations showed AA that exhibited various inhibition growth zones with 10, 20 (10 mm) and 30 wt% (15 mm).
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Acknowledgments
The authors were grateful to CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) for the scholarship and to Esstech, Inc. for the donation of the reagents and CNPq for financial support (Grant 306822/2008-3).
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Henn, S., Nedel, F., de Carvalho, R.V. et al. Characterization of an antimicrobial dental resin adhesive containing zinc methacrylate. J Mater Sci: Mater Med 22, 1797–1802 (2011). https://doi.org/10.1007/s10856-011-4364-x
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DOI: https://doi.org/10.1007/s10856-011-4364-x