In the case of incisor protrusion, the possibility of re-alignment depends on the situation. If the doctor does not recommend re-orthodontics, it may be due to the patient’s own dental conditions, such as periodontal disease, dental conditions are not ideal. Therefore, patients with the following problems, the treatment effect may not be as expected, need to consider whether to insist on re-correction: 1, dental health problems: if the first orthodontic treatment caused the destruction of the periodontal membrane of the teeth, serious alveolar bone resorption, or the existence of pulpitis and other disease problems, the risk of damage to the teeth when re-correction is relatively large, so it is not recommended; 2, the condition of the teeth themselves: general incisor convexity re-correction, the need to The extraction of the posterior wisdom teeth is carried out. However, if the ideal effect is not achieved after the first orthodontic treatment, but the teeth themselves can no longer be removed again, etc., the significance of re-orthodontic treatment is not significant; 3, affect the normal function: if the first orthodontic treatment, the patient is not very satisfied with the results, but after the doctor’s assessment, re-orthodontic treatment may affect the normal bite function of the teeth, in such cases, it is not recommended for re-orthodontic treatment; 4, bone problems: if the first correction Younger, but then orthodontic older, at this time the dental bone may have been set, the problem teeth may not be solved by simple orthodontics, is not recommended. If the patient has not been diagnosed at a professional dental clinic or hospital, simply by virtue of not having professional medical knowledge of the crowd that the incisors are not recommended to be corrected again, it is not recommended to listen blindly at this time. It is possible to go to a professional dental clinic for consultation, and it is generally possible to correct again without special problems.