Does bleaching damage the teeth?
No. When carbamide peroxide (the active whitening agent) contacts water, hydrogen peroxide is released which whitens the teeth. Bleaching does not soften, demineralize or weaken the teeth.
Do over-the-counter bleaching products work?
There is some evidence that over-the-counter bleaching products do whiten teeth, however, many of the products are too abrasive and can damage the teeth with extended use or misuse. Supervision by your dentist is always the safest and most effective way to whiten your teeth.