A Answers (3)
Stacy Wiegman, PharmD, Pharmacy, answeredTooth whiteners only work to brighten your natural teeth and their enamel. They do not work on veneers, bonding materials, tooth-colored fillings, or crowns. If you want whiter veneers or crowns, talk to your dentist. He or she may be able to replace them with whiter products.
Tooth whiteners do not work on crowns and veneers, since they do not change their color or shade. That's one reason why it's important to consult with your dentist before undergoing a whitening procedure, including using over-the-counter treatments. Whitening methods work for real teeth as they brighten the teeth and remove stains and discolorations. However, if you have a crown in the front of your mouth, you may want to reconsider whitening or you may have bright white teeth on either side of an off-white crown.
William M. Litaker, Dentistry, answered
Whitening agents only work on the pigments in the enamel of teeth. Fillings, crowns, and veneers do not whiten. However, if veneers have been placed over dark teeth, the enamel under and behind the veneers can whiten with whitening techniques and make the tooth appear whiter. Your dentist can best advise you about whitening agents and which teeth in your mouth would be best suited to whitening.