Tooth whitener safety
This article was originally published in The Tan Sheet
Canadian researchers determine tooth-whitening products with hydrogen peroxide or carbamide peroxide do not increase users' risks for oral cancers, including people who abuse alcohol and/or are heavy smokers. The review of study literature, including unpublished studies with tests involving more than 4,000 people, was conducted by Ian Munro, PhD, associate director of the University of Toronto's Program in Food, Safety & Regulatory Affairs, et al., and published in the Journal of Esthetic & Restorative Dentistry, according to a Nov. 16 release. Exposures to hydrogen peroxide, which generally is the effective ingredient in tooth whiteners, are too low and, at 30 to 60 minutes, too brief to increase risks for oral cancer, the study results show. Concentrations of the substance quickly diminish to be nearly undetectable within 15 to 60 minutes. In March 2005, a European Union's Scientific Committee on Consumer Products 1opinion raised concerns about the safety of products containing the ingredients. In Europe, tooth whitening products with hydrogen peroxide or carbamide peroxide are only available to consumers from a dental practitioner, Munro et al. note...
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