1, during orthodontic treatment, patients must actively cooperate with doctors and strictly follow medical advice, which is a prerequisite for obtaining good treatment results on time. 2, 2-3 days after replacing the orthodontic arch wire or adjusting the force, the teeth will have pain, soreness or looseness, which is the normal physiological reaction of periodontal tissue tissue, generally will slow down within a week; if the pain is not tolerable, please contact the doctor for the necessary consultation and treatment. 3. It is not easy to clean teeth during orthodontic period, so it is necessary to strengthen the maintenance of oral hygiene, and brush carefully for 2-3 minutes after each meal to thoroughly remove food residues and plaque to avoid gum redness, inflammation, oral odor and tooth decay. Oral health care products such as mouthwash can be used together with professional periodontal cleaning when necessary. a) If you wear a removable aligner, you need to clean the tissue surface of the aligner with a toothbrush dipped in toothpaste every day, otherwise the aligner will produce odor. b) If you need to wear a removable aligner to eat, you should remove the aligner after eating to rinse the remaining food residue and brush your teeth thoroughly. 4. It is best to eat soft food with low acidity during orthodontic period to avoid exposure of teeth to acidic environment and orthodontic appliances falling off. Do not bite hard and sticky food (such as bones, chicken claws, chicken wings, candy, apples, sugar cane, etc.), large pieces of food, hard fruits and food that needs to be torn can be torn and cut into small pieces to eat. 5, treatment if you need to use other orthodontic aids, such as head caps, J hooks, rubber bands, front traction, chin pockets, combined pads, etc., must be used correctly in accordance with the doctor’s instructions to prevent accidental injury and affect the effectiveness of treatment. 6. During the orthodontic period, please follow up the doctor’s appointment on time in order to enter the next stage smoothly. If you don’t visit the doctor for more than two months, you should contact him/her in time. Long-term failure to visit the doctor on time will result in periodontal inflammation, tooth decalcification, bite misalignment and other serious consequences, and will delay the course of treatment and affect the efficacy of treatment. 7, orthodontic treatment after the need to wear retainers to prevent the rebound of misaligned teeth. Generally, it should be kept for 1-2 years, and some patients need to keep it for a longer time or even for life.