1, do not rely on drugs The orthodontic treatment of malocclusion is different from the treatment of general diseases that require injections and medication, it relies on wearing orthodontic appliances inside or outside the mouth, the teeth, alveolar bone and jawbone to apply the appropriate “biological force”, so that it produces physiological movement, so as to correct malocclusion. In addition, some adult patients with bony deformities also need to cooperate with surgical treatment. 2, the course of treatment is longer Orthodontic treatment of teeth, jaw bone movement is gradual, in the process of orthodontic treatment, by the doctor on the aligner to apply the appropriate force to achieve the purpose of gradually moving the teeth, so the course of treatment required for orthodontic treatment is long, generally about 2 years, complex deformities may be longer. Patients generally need to visit the hospital every few weeks during the orthodontic treatment process, and the review is mainly based on the wrong orthodontic situation, the appropriate adjustment of the aligners. 3, the need for cooperation between doctors and patients The force of orthodontic treatment is provided by the aligner, the patient wears it carefully to make it work, especially for patients wearing movable aligners. The cooperation of the doctor and patient directly determines the length of treatment and the ultimate effect of treatment.