Carbamide peroxide teeth whitening kit

A carbamide peroxide whitening kit uses a peroxide gel in a tray to lighten tooth stains, with fit and concentration guiding its use.

Carbamide peroxide breaks down into hydrogen peroxide and urea. The peroxide moves through enamel and dentine and oxidizes some stain molecules, while fillings, crowns, and veneers do not change shade.

Use only the gel amount and wear time supplied for the tray, keeping gel off the gums and swallowing as little as possible. A dental examination should check cavities, cracked enamel, gum inflammation, and existing restorations before whitening.

Stop and seek dental advice if you develop marked gum irritation, persistent tooth pain, or sensitivity that does not settle after the course. Dental assessment is especially important with untreated decay, enamel defects, or a history of strong sensitivity.

Ask which stains are likely to respond, whether the tray seals evenly, and how the gel may affect your fillings or crowns. Ask how to manage sensitivity and whether another treatment is more suitable.