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.
Which teeth whitening procedures may be available?
Teeth whitening may use custom trays, dentist-applied peroxide, or in-office light-assisted application after checking the teeth and gums.
How does peroxide break down tooth staining?
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.
What checks are needed before choosing a method?
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.
When should sensitivity or gum disease be assessed first?
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 types of stains are likely to respond?
Which stains are likely to respond? Do I need fillings replaced after whitening? How will you manage sensitivity and protect my gums?
Frequently asked questions
Does whitening remove every stain?
No. Some internal or medication-related discoloration responds poorly and may need a different cosmetic approach.
Why can teeth feel sensitive?
Peroxide can temporarily irritate dentinal tubules; the clinician can adjust concentration, exposure, or spacing between treatments.
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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.