Get teeth professionally whitened
Professional whitening is a planned peroxide treatment for natural teeth after a dentist checks gums, enamel, decay, and restorations.
The short answer
Professional tooth whitening uses a dentist-selected peroxide gel, with the gums protected and exposure controlled after checking that the teeth and mouth are suitable for treatment.
How do peroxide ingredients lighten enamel and dentine?
Hydrogen peroxide or carbamide peroxide diffuses through enamel and dentine and breaks down coloured organic molecules. It does not lighten ceramic, composite, metal, or existing fillings, and sensitivity depends on tooth condition, gel concentration, exposure, and technique.
What happens before the dentist applies whitening gel?
The dentist examines the mouth, treats active disease, records shade, protects soft tissue, and applies in-office gel or provides a fitted home tray. Use only the instructed amount and schedule, and report sensitivity so the plan can be modified rather than adding more product.
When should dental problems be assessed before whitening?
Delay whitening until tooth decay, gum disease, cracks, or exposed roots have been assessed. Seek care for severe sensitivity, gum burns, spontaneous tooth pain, swelling, or a dark tooth that has not been diagnosed.
What should you ask about whitening and existing restorations?
Ask whether whitening will match your restorations, what treatment method is proposed, how sensitivity will be managed, and whether stains need restorative or internal treatment instead.
Frequently asked questions
Can whitening fix brown or grey teeth?
It may help some external or age-related stains, but grey or trauma-related discoloration may need a different diagnosis and treatment.
Can I whiten with cavities?
A dentist should assess and treat active decay first because peroxide can irritate exposed tooth tissues.
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.