Boredom: My experience has been that it is better at the dentist office as your teeth get whiter. It is a bit tedious and can take a few hours...But is worth it. I have not heard of any medical side effects except maybe tender teeth/gums for a little bit. Also ask your dentist. The one doing the procedure will have the most information. Ask what product they are using & what chemicals in it & side effects.
Answered 3/26/2012
6k views
Sensitivity: The only real side effect to teeth whitening is sensitivity, which usually is just the day of, but may last for up to 24 hours. Many patients experience none at all, and others will feel what we call "zingers" the day of. Another doctor answered that it takes a few hours, but usually, in-office whitening is about a 45 - 60 minute procedure, depending on what system is used.
Answered 9/25/2012
5.6k views
See below-: The most common side effects are teeth that are sensitive to hot/cold things and gums that can be sensitive to touch and can even peel. These side effects are usually not going to last long.
Answered 5/8/2013
5.1k views
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