Gel toothpastes typically have a smooth ... three types of fluoride as being able to help prevent dental cavities: stannous fluoride , sodium fluoride and s odium monofluorophosphate.

This is the most basic function of toothpaste, and it is the main reason you will see fluoride in your toothpaste. It comes in a few different forms, such as stannous fluoride and sodium fluoride.