Which tooth whiteners works best?

Teeth whitening has been a process performed by dentists. Recently many teeth whitening products are made that can be used at home. Now teeth whiteners are among the materials that you can find at every supermarket, where you find other dental care supplies.

As with all other products, most manufacturers claim that their product is the best and has advantages to what competitors offer.

Project description:
In this science project you will perform experiments to compare different tooth whiteners to find out which one works best. 
 Details of this project
More details or support for this project is available at the members section of ScienceProject.com web site. Material needed for experiment or a science kit about this title may be available at MiniScience.com.