1. Make a good habit of brushing your teeth in the morning and evening, and brush your teeth for no less than 3 minutes each time, and remember to change your toothbrush once every three months. Remember to rinse your mouth after eating lunch. 2.Whether your mouth is healthy or not, make sure you go to the hospital once or twice a year for checkups, and your doctor will give you professional advice. 3, whether you are a man or a woman do not smoke, frequent smokers teeth discoloration will be very serious, seriously affect a person’s perfect image, but also harmful to health. 4, do not underestimate the bleeding gums, bleeding gums may indicate that you suffer from periodontal disease, you should see a doctor in a timely manner. 5, Parents often think that children’s milk teeth will be replaced by new teeth, so they do not need to pay too much attention to their early teeth. But when a new tooth comes in too early and the other teeth haven’t fallen out yet, the child’s teeth will grow backwards and forwards if not seen in time. 6, to correct children’s bad habits, some children have thumb sucking, licking teeth, clenching teeth, open mouth breathing, biting lips and other habits, resulting in malocclusion of teeth. Correcting bad habits is good for dental health, and misaligned teeth should be seen by a doctor at the earliest opportunity. 7, the development of teeth can not be separated from a variety of nutritious food, therefore, whether it is adults or children and adolescents, diet should be diversified, do not be partial food.