My way of brushing teeth I brush my teeth three times a day after every meal. At one of them, I thoroughly brush my teeth for about 20 minutes without any teeth paste. I was taught this way by my dentist many years ago. He said that if I used the paste, I could feel like my teeth become clean, even though they weren't yet. Also, brushing with the teeth paste for a long time can hurt my teeth surfaces. I don't like go dentist, so I keep the way he taught.