Are teeth whiteners safe

Teeth whitening products can cause sensitivity or gum irritation, so suitability depends on the peroxide strength, contact time, and your dental health.

Whitening uses peroxide compounds to oxidize colored molecules within enamel and dentin. It does not remove fillings, crowns, veneers, or other restorations, which may stay their original shade.

Use a product exactly as directed and avoid applying it to inflamed gums, untreated decay, cracks, or exposed root surfaces. A dentist can examine your teeth, identify existing restorations, and choose a concentration and tray fit that suit you.

Arrange dental care if pain is persistent, one tooth darkens, the gums turn white or sore after gel contact, or you have untreated cavities. Sudden swelling, facial swelling, or trouble breathing needs urgent care.

Ask which active peroxide is present, whether decay or gum disease should be treated first, how the gel will contact your gums, and how existing fillings or crowns will look after whitening.