Why do some stains respond while restorations stay unchanged?
Peroxide acts on stain molecules in enamel and dentine, but not on fillings, crowns, veneers, or bonding.
What happens during a supervised Zoom whitening appointment?
The clinician examines the mouth, protects the gums, applies the gel, and follows the product protocol.
When should dental problems be checked before whitening?
Pain, untreated decay, gum disease, enamel defects, or severe sensitivity should be assessed before whitening.
What should you ask about stains, restorations, and sensitivity?
Ask which stains can respond, how restorations will match, and how sensitivity will be managed.
Frequently asked questions
Will it whiten crowns?
No. Their shade must be planned separately.
Why can sensitivity occur?
Peroxide can stimulate nerves through tooth fluid pathways temporarily.
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.

