Study: UV light doesn’t aid teeth whitening
By: Kathy Kincade, Editor in Chief
Ultraviolet (UV) light not only doesn’t enhance teeth bleaching, it can actually be dangerous to patients and dentists exposed to it, according to a study published last month in an advance online version of Photochemical & Photobiological Sciences (January 16, 2009).
UV light is claimed by most manufacturers to further activate the oxidation process of hydrogen peroxide, thus improve bleaching efficiency. But lead author Ellen Bruzell, Ph.D., of the Nordic Institute of Dental Materials said her team’s research found no evidence to support this claim and that, in fact, UV light-assisted teeth bleaching can damage skin and eyes up to four times more than sunbathing.
The manufacturers cited in the study did not respond to repeated requests for comment.
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