Vertical brushing method: Brush the toothbrush bristles at an angle of 45 degrees to the tooth surface, take two to three teeth as a group, turn the brush head, brush the upper teeth from top to bottom, brush the lower teeth from bottom to top, and brush the upper and lower teeth back and forth on the occlusal surface. 1, the order of brushing is to brush the outside first, then brush the occlusal surface, and finally brush the inside. 2, first left and then right, first up and then down, first outside and then inside, in order to brush clean inside and outside. 3, each part should be repeatedly brushed 8 to 10 times, the whole mouth brush clean need 3 minutes. To protect dental health, you need to start with children.