Methacrylate monomers lower the level of reduced glutathione and increase the in vitro sensitivity of cells to optical radiation

and | September 23rd 2010

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Induction of cell death by optical radiation in the wavelength range 350–500 nm was significantly increased by commonly used methacrylate monomers, not mediated by absorption of radiation by the methacrylate monomers, but through a mechanism involving rapid reduction in the level of glutathione

In vitro photosensitization initiated by camphorquinone and phenyl propanedione in dental polymeric materials.

, , and | September 2nd 2010

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Documentation is scarce on the photobiological effects of photoinitiators present in dental light curable materials. The aim of this study was to determine cellular effects of the photoinitiators camphorquinone (CQ) and phenyl propanedione (PPD) and to investigate whether these substances produced reactive oxygen species after low and high doses of optical radiation (between 0 and 17J/cm(2)).