Compare different toothpaste for their effectiveness?
Introduction:

Manufacturers of different brand toothpastes advertise their products with properties such as whitening, preventing plaques, flavor, protecting the teeth and killing bacteria. 

With so many competing claims, it is hard to determine which toothpaste really works.
 
 Project description:
In this science project you will perform experiments to determine which toothpaste is more effective in removing food color and whitening.
 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.