- I awarded the blue ribbon to- - Dad, Dad. - Paul. - My checkup, I only had one cavity. - Great. - How'd you do it? - I brush with Crest now. - Aw, toothpaste is toothpaste. - Oh no, sir. Crest has fluoride and the others we tried didn't. Fluoride's the best cavity-fighter you can get. Spokesperson: Crest can't promise only one cavity, but we can promise most people good checkups. - That is good news, son. Spokesperson: Fighting cavities is the whole idea behind Crest.