Covering the sun is very common in life. Covering the sun will not only affect people's beauty but also affect our health. Therefore, people with teeth must correct them in time. This is especially important for adults. The appearance of adults is very important. So what? Experts from Shenzhen Plastic Surgery Hospital have the following analysis on this issue: 1. General orthodontics: it is a traditional orthodontic method, that is, the orthodontic device is stuck to the teeth with adhesive, and the patient can't take it off by himself, so the orthodontist can only disassemble and adjust the force. A follow-up visit is needed once a month, and the doctor gradually moves the teeth hard to reach the designed ideal state, and the orthodontic work is basically over. After the appliance is taken out, the retainer should be worn for a period of time to consolidate the orthodontic effect and prevent recurrence. 2, invisible orthodontics: invisible orthodontics is to install all appliances on the lingual side of the teeth for orthodontic treatment, so it is also called lingual orthodontics. This orthodontic method is that the appliance can not be seen from the outside, and normal social and professional activities can still be carried out during orthodontic treatment. Unconsciously changed the arrangement of teeth and changed the facial image. 3. bionic crown orthodontics: bionic crown orthodontics is to treat the tooth surface specially and then restore the crown. The previous treatment took a long time. Adult orthodontics generally takes one to two years. Some people have misgivings about such a long time. The biggest feature of bionic crown orthodontics is that it takes a short time. It usually takes two visits and seven days to have a neat and beautiful tooth. 4.BT straight wire arch orthodontic technology is an advanced orthodontic technology with brackets at present. Different from the previous edgewise brackets, the angle of straight edgewise brackets has been designed in advance, and the teeth will move in three dimensions according to the doctor's expectation, which not only shortens the orthodontic time span, but also better ensures the orthodontic effect. According to the anatomical position of different teeth, a certain angle is preset on the bracket of the appliance. Because there is no need to bend the top, second and third series of bends on the arch wire like the edgewise appliance, a straight arch wire with the basic shape of the dental arch can be put into the bracket to complete the lip-tongue, mesial-mesial, vertical and root-controlled movement of the teeth, so it is called a straight arch appliance. ?