Percussion is a common method of dental care. Modern medicine believes that it can increase the self-cleaning effect of teeth, give play to the stimulation formed by chewing movement and enhance the resistance of teeth themselves. There was a difference in keeping in good health before. In short, knock your teeth once every morning and evening, and the number of times you knock your teeth is not limited, which can vary from person to person. The strength of knocking teeth is not uniform, and it can be done according to the health of teeth. However, we must persevere and never stop until we see the results. The main purpose is to strengthen teeth, which belongs to the health care nature and is a micro-force. Tapping teeth makes the tissues around the root vibrate, which is beneficial to improve the ability of root to resist diseases.