Before orthodontic treatment, a thorough and detailed examination of the mouth is required. If there is calculus, tooth decay, gum inflammation, or pulp disease on the teeth, they must be treated first before orthodontic treatment. It is important to note that orthodontics is not just as simple as wearing braces. Some patients may have overcrowded teeth and not enough space, which requires the removal of one or more teeth to ensure their ultimate aesthetics. First of all, fixed aligners are bonded to the teeth through special materials. Two to three days after bonding the aligners, the teeth may feel sore due to the stress. This can be tolerated and prevented, and will disappear automatically after a week, generally do not need to take medication, after each subsequent follow-up patients may feel tight and slightly painful teeth, on the contrary, severe pain is not normal, the patient needs to communicate with the doctor in a timely manner. Of course, the pain is also related to the degree of malocclusion and tolerance of the patient. After the braces are fitted, it is important to pay attention to oral hygiene, otherwise you will be prone to tooth decay and periodontal disease. After wearing orthodontic appliances, it is best to brush your teeth with an orthodontic toothbrush or a soft-bristled toothbrush for children, and brush your teeth more carefully, not less than 5 minutes each time. If you wear movable braces, you must clean the braces and clean your teeth thoroughly every morning and before going to bed, and then put them on again. Secondly, orthodontic treatment will not affect eating, but you should also pay attention to what you eat. Foods that are too hard and sticky can damage the aligners or cause them to fall off, thus affecting the treatment effect (these foods include: hard and soft candies, bones, barbecue, sugar cane, apples, pears, etc.). The daily rice, vegetables, eggs, meat, etc. can be eaten as usual, some food really want to eat is not no way, such as ribs, chicken and duck, you can pick off the meat to enjoy, apple and pear can be peeled into slices to eat, so it seems that the eating aspect will not have too much impact. After the final orthodontic appliance is placed, usually once a month for a follow-up visit, remember to bring a dental appliance to make it easier to clean the teeth after the doctor removes the archwire. Near the end of treatment, retainers are made according to the patient’s condition to maintain the orthodontic results achieved, and insisting on wearing retainers is the key to preventing relapse.