Toxicity of a dental adhesive compared with ionizing radiation and zoledronic acid

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Background: To determine the toxicity of aqueous dilutions of a universal self-priming dental adhesive (DA) and comparing these with those elicited by exposure to ionizing radiation (IR), Zoledronic acid (Z) treatment and the synergic effects of the combined treatment with IR+Z. Material and Methods: The genotoxic effect of DA was determined by the increase in the frequency of micronuclei in cytokinesis-blocked in cultured human lymphocytes before and after exposure to 2Gy of X-rays. The cytotoxic effect was studied by using the MTT cell viability test in normal prostate cell lines (PNT2) after exposure to different X-ray doses (0Gy-20Gy). The cell lines divided into different groups and treated with different test substances: DA in presence of O2, DA in absence ofO2, Z-treated and control. Results: An in vitro dose-dependent and time-dependent cytotoxic effect of DA, Z and IR on PNT2 cells (p>0.001) was had a more pronounced effect of increasing cell death than DA with-O2 (p<0.001). In the genotoxicity assay, DA at 25% of its original concentration significantly increased chromosome damage (p<0.001). The samples studied were found to be toxic, and the samples photo-polymerized in absence ofO2 showed a bigger cytotoxic effect comparable to the additive toxic effect showed by the combined treatment of IR+Z.




Alcaraz, M., Olivares, A., Achel, D. G., García-Cruz, E., Fondevilla-Soler, A., & Canteras-Jordana, M. (2015). Toxicity of a dental adhesive compared with ionizing radiation and zoledronic acid. Medicina Oral Patologia Oral y Cirugia Bucal, 20(4), e427–e434.

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