I started using Crest Whitening Strips about three days ago, the ones you have to wear for half an hour twice a day (1 hour total) and just the second time i used them, my left front tooth started really hurting, the next day was the same. Today it was a tooth on the bottom. Its a quick sharp pain that feels like its in the roots or my tooth. It comes and goes really quickly, but my tooth still feels a little wierd afterwards. They're working, so i dont want to stop using them, but the pain is worse each time i use them.
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You will experience that sensitivity in your teeth by using them so prolongued use is not advised. When your box is done, keep good hygiene habits and don't buy more for a few months. Read the box, they'll advise to discontinue use if you're not comfortable. What makes your teeth white is the acid in the gel of the strips. Once your teeth have whitened then it's just a question of keeping them that way by regular brushing.
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