

Whitening products use peroxide-based ingredients to lighten some natural tooth discoloration. The result depends on the original tooth color, the cause of staining, the product, and how the teeth respond.
Before whitening, a dental professional should assess decay, gum health, cracks, sensitivity, and existing restorations. Crowns, fillings, veneers, and bridges do not whiten in the same way as natural tooth structure.
Temporary sensitivity or gum irritation can occur. Whitening is a cosmetic procedure and does not replace preventive dental care.

There is no reliable universal number of shades or duration of result. Diet, tobacco use, oral hygiene, and the cause of discoloration influence maintenance.
A consultation can compare whitening with restorative options when discoloration is caused by trauma, medication, fluorosis, or changes inside the tooth.
