The process utilizes a custom fitted mouth matrix or tray, which holds and bathes the teeth in a whitening solution. The American Dental Association has placed its seal of approval on several home-bleaching products validating their safety and effectiveness. The structure of the tooth is not changed, only the tooth color become lighter. Average treatment takes about two weeks but results are visible in a matter of a few days. Light yellow and moderately yellow teeth respond well to home bleaching.
Some people experience temporary increased tooth sensitivity to cold during the treatment.
However, new formulations have virtually eliminated this problem. Once home bleaching is completed, the teeth will always be lighter than they were. Although there are many whitening agents sold over the counter, the best results are obtained by dentist-supervised programs with custom fitted trays. Bleaching will benefit those patients who have relatively straight teeth and want a brighter smile. If you have crowns or other restorations on the teeth to be bleached, these restorations will not whiten and will require replacement after the lightening is complete.