What can a kid do in two minutes? If they want good oral health, they'll spend that time brushing their teeth twice a day, recommends the American Dental Association. Race fans of all ages can join Greg Biffle, driver of the No. 16 3M Ford Fusion, to put good dental health on the fast track. With good brushing and flossing habits, a smart diet and regular visits to the dentist, they can have a great smile.