I almost always read in the news/press that dentists recommend to brush teeth two times a day for 2-3 minutes.
This drives me crazy, because it does not make sense; The point for dental health is to systematical clean every surface of your teeth twice a day (and use inter-dental brushes/floss once a day). For me, brushing my teeth takes around 6 minutes, if I hurry up. For someone faster it might be possible in 1 minute.
So, why do dentists always give the 2-3 minutes recommendation?
So I’ve had something like 25-30 cavities filled in my life. I haven’t had a single cavity in 10 years, though. I brush only once a day, and floss. The trick is flouride rinse afterwards. That’s the secret.