- And so, after two years, my group had 34% fewer cavities with Crest. 

- Tests against the same toothpaste but without Fluoristan prove Crest works. Crest, recognized effective by the American Dental Association. Their Therapeutics Council says, Crest has been shown to be an effective decay-preventive dentrifice that can be of significant value when used in a conscientiously applied program of oral hygiene and regular professional care. Remember, regular checkups, proper diet, frequent brushing, with Crest.