How long does bleaching last

Bleaching uses peroxide to break down colored molecules in enamel and dentin. The visible result depends on the starting shade, stain type, exposure to pigments, enamel thickness, and whether restorations are present.

Before treatment, have the dentist manage decay and gum inflammation and check tray fit. Afterward, brush with fluoride toothpaste, clean interdentally, and follow the prescribed maintenance plan rather than repeatedly applying unplanned products.

Arrange care if color returns in one tooth, the tooth is painful, or darkening follows trauma. Contact the dental team for sensitivity or gum irritation that continues after the treatment period.

Ask whether the discoloration is extrinsic or intrinsic and whether whitening is suitable for your enamel. Ask how trays, gel amount, food choices, and future restorations will affect the result.