The whole process of orthodontic treatment generally includes checkups, discussion of the plan, wearing of braces and retainers, and so on. 1. Examination: X-rays and CT scans are usually performed to understand the periodontal condition of the patient’s roots or alveolar bone, as well as the shape of the facial bones. At the same time, oral modeling is needed to observe the occlusion and alignment of the teeth to determine whether orthodontic treatment is feasible. 2. Discussion of plan: Generally, after the patient has undergone the above examination, the doctor will confirm the orthodontic goals and treatment plan with the patient and select the appropriate type of aligner. 3. Wearing orthodontic appliances: Generally, according to the patient’s own situation and treatment plan, the patient needs to make preparations for tooth extraction, and wear orthodontic appliances 1~2 weeks after tooth extraction, and put the appliances on the patient’s teeth. Patients should return to the hospital every month in the early stage and adjust the orthodontic force in time. 4. Wearing retainers: In general, orthodontic appliances should be worn for about 2 years. After removal, retainers should be worn according to the doctor’s instructions and kept in place for one and a half to two years to prevent tooth shrinkage, etc. It is recommended that patients should actively seek medical attention if discomfort occurs to avoid delays.