Smile and sparkle teeth whitening
Professional teeth whitening lightens selected natural tooth stains after the dentist checks enamel, gums, fillings, and the cause of discoloration.
Which natural tooth stains can professional whitening lighten?
Professional teeth whitening lightens selected natural tooth stains after the dentist checks enamel, gums, fillings, and the cause of discoloration.
What can cause teeth to look darker or discoloured?
A dentist identifies whether the colour comes from surface deposits, ageing, medication-related change, trauma, or a restoration. The examination also checks enamel defects, dentin exposure, cavities, and gum health.
Which whitening treatment may suit your teeth?
Treatment may involve a dentist-applied gel, custom take-home trays, or another prescribed system. Follow the wear time, keep gel away from the gums, and avoid abrasive home products.
When should tooth discolouration be checked first?
Seek care before whitening for pain, bleeding gums, untreated cavities, cracked teeth, or a single tooth that has turned grey or brown. Contact the dental team if sensitivity or soft-tissue irritation persists.
What should you ask about colour changes and restorations?
Ask what caused the discoloration, which teeth will change colour, how existing restorations will match, and whether a cleaning or restorative treatment should come first.
Frequently asked questions
Does whitening work on crowns?
No. Whitening changes natural tooth colour, so a crown or filling may need separate colour planning.
Why are my teeth still uneven after whitening?
Different teeth and different stain types respond at different rates, and restorations do not bleach.
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.