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Originally Posted by worth
what exactly do the strips do? i know they make your teeth whiter...but how?
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I asked my hygenist this question, and she gave me some long-winded diatrbibe about molecules and polymers and other stuff I can't remember.
Edit: According to Wikipedia:
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The procedure to bleach teeth uses oxidizing agents such as hydrogen peroxide or carbamide peroxide to lighten the shade of the tooth. The oxidizing agent penetrates the porosities in the rod-like crystal structure of enamel and oxidizes interprismatic stain deposits; over a period of time, the dentin layer, lying underneath the enamel, is also bleached.
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