Tooth whitening (bleaching) brightens teeth that are discolored or stained. Bleaching may be done completely at Smiles On Pecos or the cosmetic dentist 89120 may dispense a system for you to use at home. Peroxide is the primary bleaching agent found in virtually every whitening product. Commercial whitening products are restricted by law to the amount of peroxide they can have. A cosmetic dentist 89120 on the other hand, can apply a higher-concentration peroxide gel to teeth, which can whiten teeth much more dramatically and rapidly than commercial whitening products.