[BobL]

“Brush three times a day.”

More than that, pretty much after eating (at any time) and also with flossing sticks and cleaning with Denteks. If you get the crap off of your teeth quickly, they won’t have time to decay.

[Berlin_Freeper]

More than that,

And more than that:
Cavities are primarily caused by bad dental habits, including diets high in sugar and acids, use of tobacco products, and poor oral hygiene. However, people who take excellent care of their teeth also get cavities—sometimes even more than those without a good oral care routine. If you get cavities more easily than others, genetics may partially be to blame.

[steve86]

My teeth never decay anymore. They break. Brushing / flossing has nothing to do with it.