What teeth whiteners are safe

The suitability of a whitener depends on its peroxide formulation, exposure, your teeth and gums, and whether visible restorations are present.

Whitening products may use peroxide gel in trays, strips, pens, or an in-office system; abrasive pastes mainly remove surface stain rather than change internal tooth colour. Risk depends on concentration, fit, contact with gum tissue, enamel defects, exposed dentine, decay, and sensitivity history. Existing crowns, bonding, and veneers keep their colour.

Risk depends on concentration, fit, contact with gum tissue, enamel defects, exposed dentine, decay, and sensitivity history. Existing crowns, bonding, and veneers keep their colour. Have a dental examination first, then use a product made for teeth according to its instructions. Keep gel away from gums and pause if sensitivity or irritation becomes significant.

Have a dental examination first, then use a product made for teeth according to its instructions. Keep gel away from gums and pause if sensitivity or irritation becomes significant. Seek care for persistent pain, gum whitening or peeling, an ulcer, or a single tooth that changes colour. Whitening is not a treatment for decay or gum disease.

Seek care for persistent pain, gum whitening or peeling, an ulcer, or a single tooth that changes colour. Whitening is not a treatment for decay or gum disease. Ask what finding would change the treatment plan.