1. tooth extraction before orthodontic treatment: some patients' wisdom teeth or teeth are too crowded, so they need to have their teeth extracted before wearing orthodontic appliances. The pain of tooth extraction is usually severe, and it can be relieved by oral anti-inflammatory and analgesic drugs when necessary;
2. When wearing braces for the first time: There are several kinds of braces, such as movable brackets, ceramic brackets, self-locking brackets, lingual hidden brackets and invisible brackets, which can be selected according to the doctor's advice and your own situation. When you wear braces for the first time, you may feel a little uncomfortable, but you will gradually adapt after wearing them for a while;
3. After intensive follow-up: teeth correction is not achieved overnight, and it needs to be carried out step by step. The follow-up time is usually 1-3 months, and the appliance will be replaced or strengthened according to the situation. Symptoms of discomfort or pain often appear after subsequent reinforcement, but they are generally tolerable;
4. Bone nails: Not all patients need bone nails during orthodontic treatment. In general, bone nails are for good fixation and support, which is beneficial to orthodontics. Moreover, the bone setting is carried out under anesthesia, which basically does not cause pain, but it is more painful after nailing, especially after anesthesia. It is suggested that oral anti-inflammatory and analgesic drugs should be taken to relieve it.