Overview
Custom trays are made from impressions of your teeth. You apply a prescribed peroxide gel (commonly 10–22% carbamide peroxide) and wear the trays for a set time daily.
How it works
- Carbamide peroxide breaks down into hydrogen peroxide and urea, releasing oxidizing agents against the tooth surface.
- Custom trays minimize gel contact with gums compared to boil-and-bite or stock trays.
Best for
- People wanting professional oversight without in-office chair time.
- Gradual whitening with dentist-managed dosing.
What to consider
- Requires consistency for several weeks to see full result.
- Follow the prescribed wear time - longer is not better and increases sensitivity.
Evidence note