1, the orthodontic treatment of malocclusion: unlike the treatment of general diseases, it does not require injections and medication, relying mainly on the wear of orthodontic appliances inside or outside the mouth, the teeth, alveolar bone and jawbone to apply the appropriate “biological force”, so that they produce physiological movement, so as to correct malocclusion. In addition, some adult patients with bony deformities, but also need to cooperate with surgical treatment. 2, the course of treatment is longer: orthodontic treatment of teeth, jawbone movement is progressive, in the process of orthodontic treatment, by the doctor of the aligner to the appropriate force to achieve the purpose of gradually moving the teeth, so the course of treatment required for orthodontic treatment is longer, generally about 2 years, complex malformations may be longer. Patients generally need to visit the hospital every few weeks during the orthodontic process, and the doctor will make appropriate adjustments to the aligners mainly according to the orthodontic situation of the malocclusion. 3, the need for cooperation between doctors and patients: the force of orthodontic treatment provided by the aligner, the patient wears it carefully to make it work, especially for patients wearing movable aligners. The cooperation of patients and doctors directly determines the length of treatment and the ultimate effect of treatment. In addition, the first few days of orthodontic treatment will be painful and you will not be able to eat normally. It is also important to avoid eating hard foods during the orthodontic procedure and not to eat anything sticky like fudge.