Adult orthodontics is more complex compared to adolescent orthodontics. Adult malocclusion is often accompanied by other oral diseases such as caries, periodontal disease, missing teeth, tooth wear, residual crowns, and residual roots. Before starting orthodontic treatment, comprehensive control of periodontal diseases and removal of intra-oral prostheses are required. Therefore, there are several things that adults must know before orthodontic treatment: 1. Most adults suffer from different degrees of periodontitis, with alveolar bone resorption, gum recession, and even cause tooth misalignment, such as tooth elongation, anterior tilt, gap or loss of teeth. Moving misaligned teeth in the presence of periodontitis will accelerate the resorption of alveolar bone. Therefore, before orthodontic treatment, you must receive the necessary periodontal treatment, such as scaling, subgingival scaling, flap scaling, etc. When periodontal inflammation is controlled before you can start orthodontic treatment. 2, the orthodontic treatment process may cause the original underlying lesions to develop. Symptoms such as pain, overflowing pus and loosening of teeth must be temporarily interrupted orthodontic treatment, and orthodontic treatment can be continued only after the diseased teeth have been treated. 3.People with underlying joint disease are prone to joint dysfunction symptoms during orthodontic treatment. If you have painful joint popping, you should tell your doctor in time for treatment. Those who have symptoms of temporomandibular joint dysfunction before orthodontics should first consult an arthroscopist. Due to its complex pathogenesis, orthodontics is only one of the treatment means, and it needs to be treated in cooperation with an arthroscopist. 4.As adults have no growth potential, the deformities caused by mild to moderate skeletal disorders in the craniofacial area can only be disguised by moving the teeth by orthodontic means to improve the facial appearance. Serious jaw development deformity or require complete improvement of facial shape, must be resolved through plastic surgery. 5, teeth clenching and grinding syndrome (including night grinding), is not conducive to periodontal tissue health, will aggravate periodontal inflammation. Such symptoms should be promptly told to the doctor for consultation and treatment. 6, suffering from diabetes, blood disease and other systemic diseases, or long-term use of steroids, will affect the periodontal health, orthodontics is not suitable. The damage caused by malocclusion is believed to have malocclusion people have felt, the way to correct malocclusion includes minor malocclusion can use braces, tooth loss and can be combined with dental implants, porcelain teeth and crown treatment and so on. So what do adults need to pay attention to correct malocclusion? First, comprehensive control of periodontal disease before orthodontics. Generally speaking, malocclusion in adults is often accompanied by other oral diseases, such as caries, periodontal disease, missing teeth, tooth wear, residual crowns, residual roots, as well as poor intraoral restorations, temporomandibular joint disease. Therefore, before starting orthodontic treatment, comprehensive control of periodontal diseases and removal of intra-oral prostheses should be carried out, otherwise it will affect the wearing of orthodontic appliances and the movement of teeth. Second, adults should always maintain good oral hygiene conditions during the whole process of treatment. As the growth of adults has stopped, the alveolar bone reconstruction is slower, tooth movement is relatively slow, and the treatment time required is longer. Adults are more likely to relapse after orthodontic treatment, so it is important to maintain after treatment. Adults due to occupational, psychological factors and other social activities, the length of orthodontic treatment, the beauty of the aligners, treatment effect has more requirements, so often choose ceramic brackets and other orthodontic devices that do not affect the aesthetics. Third, make adequate mental and psychological preparation. Adults due to objective and subjective factors, in the treatment effect often can not reach the degree of perfection, so adults in orthodontic treatment, can not be eager to achieve, the complexity of treatment to have a full understanding and mental preparation. Fourth, adults orthodontics to consider the impact of the general health condition. Anyone suffering from rheumatic heart disease, coronary heart disease, hypothyroidism, hyperacidity, diabetes, arthritis, bleeding disorders, epilepsy and other diseases, first to make these diseases under control; pregnant women for orthodontic treatment should be cautious; if there is a history of oral and maxillofacial surgery, radiation therapy history, medication history, etc. should take the initiative to explain the situation to the doctor, so as not to cause adverse consequences.