What is the direct answer?
Professional teeth whitening uses peroxide-based gel to oxidise coloured molecules inside enamel and dentine, lightening natural tooth structure.
What does this question mean?
Whitening changes the colour of natural teeth, not fillings, crowns, veneers, or other restorations. The result depends on the starting shade, the type of staining, enamel condition, and the treatment method.
What can you do next?
A dentist first checks for decay, gum inflammation, cracks, exposed roots, and mismatched restorations. They may then use an in-office gel, custom trays, or a supervised combination, with instructions to limit irritants if sensitivity occurs.
When should you seek dental care?
Have an examination before whitening if teeth hurt, gums bleed, stains are uneven, or a single tooth has darkened. Seek review for severe sensitivity, gum burns, or pain that does not settle.
What should you ask the dentist?
Ask what type of stain is present, whether existing restorations will match, which peroxide method is suitable, and how sensitivity will be managed.
Frequently asked questions
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What is the first step?
A dental examination identifies the tooth, gum, or treatment issue before a personalised plan is chosen.

