Teeth whitening 16 carbamide peroxide
A 16% carbamide peroxide gel is a tooth-whitening material that releases hydrogen peroxide gradually in contact with saliva.
The short answer
Carbamide peroxide breaks down into hydrogen peroxide and urea. The peroxide moves through enamel and dentine and oxidizes some stain molecules, while urea changes the local chemical environment.
What is the direct answer?
What does this question mean?
Use only a product and tray supplied or checked by a dental professional, and follow its wear instructions. Clean the tray, avoid gel on the gums, and pause if sensitivity or gum irritation develops.
What can you do next?
Have a dental examination first if you have cavities, cracked teeth, gum disease, exposed roots, or untreated sensitivity. Whitening does not change the colour of crowns, fillings, or veneers.
When should you seek dental care?
Is 16% appropriate for my teeth and tray? What is causing the discoloration, and how will existing restorations look after natural teeth are lightened?
Frequently asked questions
Can I whiten a tooth with a crown?
The crown itself generally does not lighten, so the colour match should be planned before whitening.
When should I arrange an examination?
Arrange an examination when symptoms persist, worsen, or interfere with eating, sleeping, cleaning, or normal function.