Colgate blue fresh gel toothpaste contains fluoride which is clinically proven to fight cavities on teeth surfaces and exposed roots its a great mint gel that freshens breath fights cavities on teeth surfaces and exposed roots and has an active fluoride formula that strengthens teeth how do i best care for my teeth as an adult the key to keeping a bright healthy smile throughout adulthood is to practice proper oral hygiene even adults can get cavities as well as gum disease that can l