The horizontal chattering brushing method is an effective method of brushing to remove plaque from the gingival sulcus. This method of brushing can help remove plaque from all surfaces of the teeth and effectively remove plaque from the neck of the teeth and the gingival sulcus. The specific operation is: ① hold the handle of the toothbrush, first place the brush head in the neck of the back teeth on one side of the mouth, the bristles are at an angle of about 45° with the long axis of the teeth, the bristles point to the root direction (maxillary teeth upward, mandibular teeth downward), apply slight pressure so that the bristles partially enter the gingival sulcus and partially place on the gums; ② start brushing with 2~3 teeth as a group, use a short horizontal chattering back and forth movement in the same part Brush at least 10 times, then turn the toothbrush toward the crown and continue brushing the labial (buccal) and lingual (palatal) surfaces of the teeth; ③After brushing the first part, move the toothbrush to the next group of 2~3 teeth and reposition it, paying attention to the overlapping area with the first part, and continue brushing the next part; ④When brushing the lingual surface of the upper front teeth, place the brush head vertically on the tooth surface so that the anterior bristles touch the gingival margin. Brush from top to bottom. When brushing the lingual surface of the lower anterior teeth, brush from the bottom up; ⑤ When brushing the occlusal surface, point the bristles at the occlusal surface and brush back and forth for a short distance with slight force.