Home Tooth Bleaching Slightly Reduces Enamel Strength

New research shows that human teeth lost some enamel hardness after the application of several different products used in the home to whiten teeth. The study suggests that future generations of such products might be reformulated in an effort to reduce these side effects. But this is the first study to show at a nanometer scale -- measuring in billionths of a meter -- how human teeth are affected by the popular home whiteners.

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