- Now class in about 200-- 

- Dad, dad! 

- Harry, what are you doing here? 

- My check up found one cavity. 

- Wonderful, that's the best you've ever done! 

- How'd you do it? 

- I brush with Crest now. 

- Who's such a brand and toothpaste is toothpaste. 

- You're jumping to conclusions. Crest has fluoride. Fluoride's the best cavity fighter around. 

- I thought all toothpaste had fluoride? 

- No, the others we tried didn't have it. I have to conclude Crest made the difference. 

Announcer: Can your toothpaste prove it fights cavities? This one can. This is crest. Crest's fluoride formula has proven it fights cavities. We proved it in over 20 clinical studies involving thousands of people all over the country. And Crest's accepted by the American Dental Association. 

- Son, your checkup's the biggest breakthrough of the day. 

Announcer: Crest can't promise only one cavity. But we promise most people good checkups. Fighting cavities is the whole idea behind Crest.