The process of orthodontic treatment is as follows: (1) Initial examination: Bite impression: i.e., take a model for the doctor to diagnose and design the misalignment, and as a record for comparison in the future treatment process. Photographs: Photographs of the patient’s face and teeth are routinely taken before treatment as a record for comparison during and after treatment. X-ray examination: X-ray films are routinely taken before treatment to study the condition and interrelationship of the roots, alveolar bone, upper and lower jaws, cranial bone and soft tissues. Clinical examination: Check the health status of teeth and periodontium in the mouth, oral hygiene, jaw movement, temporomandibular joint, etc. (2) Development of treatment plan: Based on the model, photos and X-rays, the doctor diagnoses the type of misalignment and develops one or more detailed treatment plans after measurement and analysis. Then the doctor will explain the treatment plan to the patient and the patient’s family at a special time, including the goals that can be achieved by the treatment, the course of treatment, the cost and various problems that may arise during the treatment, and consult the patient and the family to determine the final plan. After the treatment plan is determined, the consent form is signed by the patient or the parents of the minor patient. (3) Specific treatment process: varies from person to person and requires regular follow-up visits by the patient, ranging from 4 to 8 weeks apart. (4) Removal of orthodontic appliances and wearing of retainers at the end of treatment requires regular follow-up visits. The course of orthodontic treatment: varies from person to person, with different patients and different specific misshapes of the jaw. The most common fixed orthodontic treatment, for example, generally takes about two years. In general, children are faster than adults, treatment with extractions takes longer than treatment without extractions, and treatment of complex malocclusion takes longer than treatment of simple malocclusion. After orthodontic treatment is completed, it is usually necessary to wear a removable retainer for about two years, and individual patients even need lifelong retention.