How long will it take and How white will they get?
When wearing the trays Carbamide Peroxide is slowly broken down to Hydrogen Peroxide which whitens the teeth. The 16% gel whitens more slowly but causes less tooth sensitivity. The 22% gel whitens quickly but can cause temporary sensitivity to hot and cold. Both the 16% and 22% gels need to be worn
for about 10-14 days to achieve maximum whiteness.
Close to everyone who whitens their teeth will see improvement.
The best whiteness will be determined by the length of time the teeth are exposed to the whitening gel and the mineral composition of the teeth. tooth whitening is kind of like a reverse suntan. Some people obtain truly amazing results in only one or two days when others need a lot treatment time.
The American Dental Association (ADA) has just recently made public a review by the Cochrane Collaboration of 25 programs of home-use tooth whitening packages. The 25 trial studies looked at the effectiveness of home-use whiteners including:
* Home whitener kits given out by dentists
* Over-the-counter whiteners
* They looked at all forms of tooth whiteners except whitening toothpastes:
* Films (which are painted on the teeth)
* Gels (open in trays)
* Strips (open to the teeth)
The tooth-whitening packages used by all the products were either carbamide peroxide; or hydrogen peroxide Each home-use teeth whitening product was used for two or more weeks. After two weeks, the teeth looked brighter than if no teeth whitening programs had been used, and changes in effectiveness were due to levels of active whitening agents in the ingredients.
