牙齿是口腔的门户,健美的牙齿是口腔卫生的标志,防病的屏障。同学们:为了保持良好的口腔卫生状态和牙齿健美,我们必须坚持每天早晚刷牙,正确刷牙和饭后漱口的良好习惯。使用的牙刷应该根据年龄、口腔条件,选择刷头小,毛软而有弹性,毛束疏密合理的保健牙刷。正确 Teeth is the mouth of the mouth, bodybuilding teeth is a sign of oral hygiene, disease prevention barrier. Students: In order to maintain a good oral health and dental fitness, we must adhere to the daily morning and evening brushing, brushing your teeth properly and good habits after gargle. The use of toothbrush should be based on age, oral conditions, choose a small brush, soft and flexible, hair bundle density reasonable health care toothbrush. correct