The most uncomfortable stage of wearing braces is the misalignment of teeth in the early stage, which will be straightened by the curvature of our archwires and the angle of the brackets, and every time the archwires are replaced, the force will be increased, and the patient will feel very uncomfortable at this time, but usually the discomfort will be completely relieved after a week or so. Under normal circumstances, orthodontic treatment needs to increase the force or change the archwires once a month to gradually guide the crowded teeth to align and return to their normal position. There is also a more painful orthodontic treatment with braces, because the extraction process of the fourth and fifth tooth is more complicated, so the patient is more painful after the extraction. If the patient is late for orthodontic treatment, the extraction of wisdom teeth is also a more painful process when the permanent tooth germ erupts.