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Tooth bleaching, being one of the most popular cosmetic dental treatments, uses a bleaching agent - usually hydrogen peroxide -to remove stains from red wine, tea, coffee and cigarrete smoking.
UV light is claimed to further activate the oxidation process, improving bleaching efficiency.

However, Royal Society of Chemistry journal has reported that UV light-enhanced tooth bleaching is not only a con but also dangerous to the patients’ eyes and skin.

In the study, reported in Photochemical & Photobiological Sciences, the researchers found that the light treatment gave no benefit over bleaching without UV and that it was addiitonally dangerous to skin and eyes. UV light-enhanced tooth bleaching was found to damage skin and eyes up to four times the sunbathing does.

Patients looking to whiten their teeth should ignore claims of better bleaching with UV light treatment
as one lamp actually gave four times the level of radiation exposure when sunbathing outdoors.

Fair-skinned and light-sensitive people should be even more careful as they are at greater risk.

Bleaching was also found to damage teeth. The researchers found more exposed grooves on the enamel surface of bleached teeth than on unbleached teeth. These grooves make the teeth more vulnerable to mechanical stress.


I think sugarless chewing gum is a much safer and much more enjoyable way to clean one's teeth. This article is fair warning to those considering using bleaching agents to whiten their teeth. Good job, Lori.