First of all, the doctors should communicate with the patient to confirm whether they wear the appliance on time, and repeatedly emphasize to the patient the importance of wearing enough time (at least 20 hours a day) for treatment; Secondly, check the patient's oral condition, including whether the accessories are intact and whether the teeth move according to the design plan, etc.; Finally, wear the next sequence of appliances in the patient's mouth to check whether the edges are tight and fully seated.