- We're off on a plane trip tonight, off across the country to show that now you can do something about tooth decay with Crest, the stannous fluoride toothpaste. I'll be your guide, Frank Blair. On our trip we'll record on film the proof behind Crest, university tests, individuals representing test groups, a few of the thousands who tested Crest and showed it reduces cavities as no regular toothpaste can. So come along, learn how Crest can mean far fewer cavities for your entire family.