Az whitening
Professional teeth whitening uses a peroxide gel to lighten natural tooth colour, with the method chosen after checking the teeth and gums.
The short answer
Professional teeth whitening uses a peroxide gel to lighten natural tooth colour, with the method chosen after checking the teeth and gums. Peroxide whitening acts on stain molecules in natural enamel and dentine, while most restorations do not change colour in the same way.
Why do restorations respond differently from natural teeth?
Peroxide whitening acts on stain molecules in natural enamel and dentine, while most restorations do not change colour in the same way.
What should be checked before choosing a whitening method?
A dentist should check decay, cracks, gum inflammation, exposed roots, and restorations before choosing trays or supervised in-office treatment.
When should whitening be stopped or assessed by a dentist?
Seek assessment before whitening if teeth or gums are untreated, and stop for marked pain or chemical irritation.
What should you ask about stain response and sensitivity?
Ask which stains will respond, how restorations will match, and how sensitivity will be managed.
Frequently asked questions
What should happen before choosing trays or in-clinic whitening?
A dentist should check decay, cracks, gum inflammation, exposed roots, and restorations before choosing trays or supervised in-office treatment.
What symptom should not be ignored?
Seek assessment before whitening if teeth or gums are untreated, and stop for marked pain or chemical irritation.
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Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.