It's kind of like this story. My mom brushes her teeth for about 5-10 minutes, flosses every night and goes to the dentist every 6 months. She had to have a root canal and crown. My husband smokes and brushes every morning and night for about 1 minute and did not go to the dentist for a while. He went to the dentist and they said "mr. Gallo, everything looks great" Go figure....