The Bass brushing method, also known as the horizontal chattering method, is an effective way to remove plaque near the gingival margin and in the gingival sulcus. It is most important for maintaining gingival and periodontal health because it removes plaque near the gingival margin and in the gingival sulcus, especially in the adjacent area, the cervical area and the exposed root surface. However, the Bass brushing method is still inadequate in removing plaque from other parts of the tooth surface. The modified Bass brushing method has learned the features of other brushing methods, retaining the efficacy of removing plaque near the gingival margin and in the gingival sulcus, but also effectively removing plaque from the buccolingual (palatal) and occlusal surfaces, and can be widely applied to different populations in the community to establish good oral hygiene habits. Therefore, dental practitioners must learn and master the modified Bass brushing method, and be able to introduce and guide patients and residents to learn this effective plaque removal brushing method in outpatient medical and community health care work. (1) Brush the gingival margin of the neck of the teeth (1) hold the brush handle, place the brush head on the neck of the teeth, with the bristles at an angle of 45° to the long axis of the teeth and the bristles pointing in the direction of the roots of the teeth (maxillary teeth up, mandibular teeth down), apply slight pressure so that the bristles partially enter the gingival sulcus and partially place on the gingival margin. (2) In a group of 2 to 3 teeth, shake the toothbrush horizontally for 4 to 6 times at a short distance (about 2 mm). Then turn the toothbrush toward the crown and brush the labial and lingual (palatal) surfaces. Be careful to move gently. (3) Move the toothbrush to the next group of 2 to 3 teeth and reposition it, paying attention to the placement to overlap the position of 1 to 2 teeth. (4) When brushing the lingual (palatal) surface of the upper front teeth, place the brush head vertically on the tooth surface, make the front bristles contact the gingival margin or enter the gingival sulcus, make an up-and-down pulling tremor, brush from top to bottom, and do not brush back and forth. When brushing the lingual surface of the lower front teeth, brush from the bottom up. 2.Brush the buccolingual (palatal) surface Use the brushing method, ask in steps (2) and (3) to keep the brushing action consistent, and brush each part of the labial and lingual (palatal) surfaces of the maxillary and mandibular arches in order, without missing. 3, brush the occlusal surface Hold the brush handle, point the bristles to the occlusal surface and brush back and forth with slight force, paying attention to the upper and lower left and right segments. (B) Brushing time In order to ensure that each tooth surface has enough brushing time, brush for not less than 1 minute each time. (C) Brushing frequency In order to control plaque and maintain oral hygiene and fresh breath, brush your teeth at least 2 times a day in the morning and evening. (ii) Effectiveness evaluation It is to evaluate the degree of plaque removal. The common method is to use plaque stain to show whether there is plaque residue after brushing. The effect of brushing is judged by the degree of plaque residue. If the part with plaque residue shows certain staining, it means that the brushing effect is not good, and it suggests that the part should be brushed again or the next time should focus on brushing the part. Caution 1. Brush the cervical gingival margin with appropriate force, do not use too much force to avoid gum damage. 2, the distance of the short distance of the horizontal chattering toothbrush should not be too long, control at about 2mm, too long will damage the hard tissue of the tooth neck. 3, brush the teeth in a certain order to ensure that each part and each tooth surface is brushed and not left out.