There are a lot of people with bad teeth, want to correct, but worried about the teeth broken, especially for some older people is more so, for fear that their children suffer, so do orthodontic treatment has no side effects? 1, the impact on the pulp: in the initial stage of treatment, the pulp produces a mild, temporary inflammatory reaction, manifested as pain or discomfort in the first few days of the patient in the force, but experiments have proved that this effect is of no clinical significance. 2, the effect on the root: orthodontic treatment, the root surface of the tooth also occurs absorption, proliferation of such reconstruction activities. After treatment, the root of the tooth is restored to normal by its own repair ability, but if the treatment is too strong, it will increase the risk of root resorption. 3, on the height of the alveolar bone: done orthodontic treatment, alveolar bone height will have a small amount of reduction, this is due to wear orthodontic appliances so that oral hygiene is not easy to maintain, increase the chances of gingivitis, the alveolar bone has a certain impact on the completion of the treatment, the alveolar bone will not continue to resorption, if oral hygiene to maintain a good, the alveolar bone will gradually return to normal. 4, teeth become loose: under normal circumstances, each tooth has a certain degree of physiological mobility in order to buffer the pressure of mastication, preventing tooth trauma. When doing orthodontic treatment, the looseness of teeth increases, which is a normal reaction. For teeth to move, reconstruction of the alveolar bone and periodontium is required, as the teeth are held in the alveolar bone by the periodontium, which makes the teeth loose. However, after the teeth are straightened to a normal position and stop moving, the teeth will be able to reattach to the periodontium through their own restorative ability and become stable, so there will be no permanent damage, and the teeth will not loosen in the future. In short, to do orthodontic treatment both to achieve the therapeutic effect, but also to make the teeth move as close as possible to the physiological state, which is also to do orthodontic treatment of the longer course of treatment for the sake of, but this is good for the health of oral tissues. Also want to remind everyone to pay attention to, orthodontic treatment must be carried out by orthodontic specialists, a half-knowledge of the patient blindly corrected will cause some serious unintended consequences. There are many heavy lessons to be learned in this regard.