Different teeth whitening procedures

Teeth whitening may use custom trays, dentist-applied peroxide, or in-office light-assisted application after checking the teeth and gums.

Peroxide passes through enamel and dentine and breaks down stain molecules. Whitening changes natural tooth colour, not the colour of fillings, crowns, veneers, or other restorations.

A dentist checks for decay, cracked teeth, gum recession, and existing restorations before selecting a method. Treatment may involve custom trays with measured gel or carefully isolated in-office application.

Have an examination before whitening if you have sensitivity, untreated decay, gum disease, enamel defects, or restorations on visible teeth. Stop and seek advice if severe pain or gum burns occur.

Which stains are likely to respond? Do I need fillings replaced after whitening? How will you manage sensitivity and protect my gums?