Does professional whitening damage teeth

Whitening uses peroxide gel to break down stain molecules within enamel and dentine. Natural teeth may lighten, while fillings, crowns, and veneers keep their existing shade.

Sensitivity happens when peroxide temporarily reaches the dentine through microscopic pathways or when exposed tooth surfaces are treated. Gum irritation usually reflects gel contact with the soft tissues.

Have the dentist check your teeth and gums before treatment, then use the prescribed gel concentration, tray, and schedule. Stop the product and rinse if burning, ulceration, or marked pain develops.

A dentist can treat decay or gum inflammation first and may suggest desensitising toothpaste or shorter whitening sessions. Do not place whitening gel on a filling, crown, veneer, or open cavity expecting it to change colour.

Arrange an examination before whitening if you have toothache, untreated cavities, cracked teeth, bleeding gums, or exposed roots. Seek prompt care for facial swelling, fever, or difficulty swallowing.

Persistent sensitivity after stopping the gel needs assessment because decay, a leaking restoration, or a cracked tooth may be the cause.

Ask whether your enamel, gums, and existing restorations are suitable for whitening, which peroxide product and tray are planned, and how sensitivity will be managed. Ask how any visible restorations will be matched after the natural teeth are treated.