Articles on tooth whitening
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Some teeth-whitening kits had 300 times the legal limit of hydrogen peroxide.
We asked five experts if whitening is safe for teeth. They all said it is, so long as it’s by a dentist.
Cheap, over-the-counter tooth-whitening kits could end up costing you a pretty penny.
There are a few options for whitening your teeth, but they’re not all equally safe.



