Overview

Teeth Whitening - Overview

Teeth whitening is a cosmetic dental treatment used to reduce discoloration and create a brighter-looking smile. Professional whitening products usually contain hydrogen peroxide or carbamide peroxide, which break down staining molecules within the enamel and dentin.

Whitening may be performed in a dental clinic, at home using custom trays provided by a dentist, or through a combination of both methods. In-office treatment generally uses a higher concentration of whitening agent and may provide noticeable changes within one appointment. Home whitening produces more gradual results over several days or weeks.

Before treatment, a dentist should check for cavities, gum disease, enamel damage, cracked teeth, exposed roots, and leaking fillings. Professional cleaning may also be recommended to remove plaque, tartar, and surface stains.

Whitening works best on natural teeth with yellow or age-related discoloration. Crowns, veneers, bridges, implants, and fillings do not lighten in the same way. Internally stained teeth may require alternative treatments such as internal bleaching, bonding, veneers, or crowns.

Results depend on the original tooth color, cause of discoloration, whitening system, treatment duration, and patient habits.