- One potato two, two potato three, no new cavities, for potato me. (footsteps clopping) Mom! Mom! Look, Mom, no cavities! - Congratulations, you're the champ. We've all certainly done better since we've been using Crest. Announcer: Yes, Crest can really reduce cavities. Because only Crest has Fluoristan, an exclusive stannous fluoride formula that protects your whole family. This fluoride is a decay fighter dentists use. A decay fighter dentists put on teeth to prevent cavities. With Crest you put the same fluoride on your teeth at home every time you brush. Works, too. Indiana adults tested Crest against regular toothpaste in normal home use for a year. Result: 42% fewer cavities with Crest. So visit your dentist twice a year. Follow good dental-health rules and use Crest. You too may hear: - Look, Mom, no cavities!