Tooth bleaching can make teeth temporarily sensitive — or be uncomfortable for people who already have sensitive teeth. When used incorrectly, home kits can also lead to burned — even temporarily bleached — gums. Thats because of the peroxide in it that can cause some teeth to be sensitive to some patients .
Tooth-whitening works best for people with yellow teeth and is less effective for people with brown teeth.
To be sure tooth-whitening is worth your time and money, talk to your dentist before you use an over-the-counter tooth whitening kit.
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