Well, actually, our obsessive-compulsive tooth-brushing practices lead to deteriorating oral health, including increased Numbers of cavities and eventual tooth loss.
其实每天的强迫性刷牙会损害口腔健康，造成蛀牙增多和牙齿脱落。
3
Horizontal brushing at right angles to the vertical axis of the teeth result in the severest loss of tooth substance.