Whether orthodontic treatment can achieve the best results depends not only on the treatment of the orthodontist, but also on the good cooperation of the patient, each of which accounts for 50% of the effect of orthodontic treatment. It can be said that without the good cooperation of the patient, there will be no optimal orthodontic results. Patients in orthodontic treatment should do what with …… orthodontic treatment can achieve the best results, not only depends on the orthodontist’s treatment, but also depends on the patient’s good cooperation, each of them accounts for 50% of the effect of orthodontic treatment. It can be said that without the good cooperation of the patient, there will be no best orthodontic results. What kind of cooperation should patients do in orthodontic treatment? Orthodontic patient’s cooperation with orthodontic treatment There is always a need for force on the teeth to maintain movement. One kind of force is exerted by the orthodontist during the monthly review, which requires the patient’s cooperation to maintain this force; there is another kind of force, which is exerted by the patient himself, most of which are some orthodontic accessories, such as extra-oral bows, orthodontic leather bands, and movable orthodontic appliances, which require the patient’s cooperation even more. Patients need to do: (1) avoid damage to the aligner Damage to the aligner means a pause in orthodontic treatment. Because no matter which part of the aligner damage to the teeth of the force interruption, resulting in prolonged treatment time, and sometimes also to the patient’s oral tissue damage, causing unnecessary pain. Damage to the aligner is generally caused by the improper behavior of the patient, mainly due to dietary inattention. In orthodontic treatment, the patient should avoid eating too hard food (iron fava beans, potpourri, etc.), too sticky food (chewing gum, rice cakes), food with bones and with hard shells (chicken legs, ribs, crabs, etc.) and food with nuclei (plums, peaches, etc.). Avoid taking big bites of fruits with your front teeth, gnawing on old corn, chewing on burritos, etc. In fact, food with bones can be separated from the meat and bones, only meat can be eaten; fruit can be peeled into slices and eaten. If patients can well comply with the above rules in terms of dietary habits, there is usually no damage to the orthodontic appliances. This reduces the number of follow-up visits and costs, and allows treatment to be completed on time. In case of damage to the orthodontic appliances (loosening or dislodging of band rings, dislodging of brackets, deformation or breaking of wires, etc.), the attending doctor should be informed in time, and the doctor will decide the time of follow-up consultation according to the specific situation. In some cases, the long end of the intraoral arch wire may irritate the mucous membrane of the gums or cheeks, causing inflammation and swelling of the soft tissues. At this time, you should also consult the doctor in time and ask him/her to cut or readjust the long end of the arch wire, so as to prevent further damage to the soft tissues. (2) Active cooperation and its precautions when wearing extraoral devices Extraoral arches are a kind of extraoral force devices used to cooperate with intraoral appliances for orthodontic treatment. Some patients with a more severe malocclusion need to be treated with an extraoral arch. patients with more serious deformities need to wear an extraoral arch to utilize extraoral force to assist in orthodontic treatment of the deformity. If the patient does not wear it seriously, the orthodontic effect will be seriously affected, and it is often too late to remedy the situation, resulting in the patient’s own losses (e.g., the extraction gap is not fully utilized and disappears on its own, and the upper front teeth are still protruding forward without improvement). The orthodontist will explain to the patient how to put on the extra-oral arch, including the direction and size of the traction force, and ask the patient to comply with the doctor’s regulations. When applying, the external oral arch is first inserted into the thick round tubes of the posterior teeth with the rings, and the external oral arch is held in place with the hands, and the traction bands are hung up separately. When removing the external orofacial arch, the traction band should be removed first before removing the external orofacial arch, so as to prevent the external orofacial arch from piercing the wound and facial tissues due to the imbalance of traction force. The external orofacial arch is usually worn for about 12 hours a day, with some patients needing to wear it for longer periods of time (according to the doctor’s instructions). It should be noted that the length of time is very important, if the patient shortens the wearing time by himself, it will not be able to achieve the corrective effect. It is also important to wear the arch every day, otherwise it will also lose its corrective effect. Every time after wearing the extraoral arch, the patient’s back teeth will feel a little sore, which is normal, and also indicates that it is effective. There are also other types of extraoral appliances, such as J-hooks and chin pockets. There is another type of extraoral appliance that has the opposite direction of traction to the extraoral arch mentioned above, called the anterior traction device. The fit is basically the same as that of the extraoral arch. (3) Careful use of intraoral movable orthodontic appliances Intraoral movable orthodontic appliances include a variety of types, such as posterior tooth cushions, anterior flat guides, and a variety of functional orthodontic appliances. Patients can take off and put on these movable orthodontic appliances by themselves, so they need to cooperate well with the patients. If patients do not cooperate with them, they will lose their role in supporting orthodontic treatment, thus prolonging the treatment time, missing the optimal period of orthodontic treatment, weakening the orthodontic effect, and even leading to treatment failure. For each type of movable orthodontic appliance, patients can follow the doctor’s prescription on how and when to wear the appliance. As with the use of extra-oral arches, the length of time and daily use of movable orthodontic appliances are very important. As long as the patient can wear them carefully, good results will be achieved. When wearing movable orthodontic appliances for the first time, there will be a foreign body sensation in the mouth and it will affect the pronunciation, these problems will be gradually relieved after a period of time.