When you hit your incisor and are sore and can’t bite, consider concussion, dislocation, or fracture of the tooth. It can be through rest, root canal treatment abdominal circumference and other methods. 1. Tooth concussion: first of all, you should pay attention to rest, avoid the use of tooth replacement, biting teeth concussion is relatively minor, it is possible that 1 ~ 2 weeks will recover on their own, if there is necrosis phenomenon, the need for root canal treatment. 2. Tooth dislocation: for partial tooth dislocation, it can be reset and fixed under local anesthesia, embedded dislocation can be root canal treatment after two weeks of reset; complete dislocation should be re-implanted within half an hour. 3. Tooth fracture: if the root tip is fractured, it needs to be reset and fixed; the root is fractured in the middle of the root and needs to be reset and fixed to do root canal treatment; the crown of the tooth is fractured without exposing the pulp to do filling or desensitization treatment, and the person who is exposed to the pulp will be treated with root canal treatment. When you hit the incisor soreness can not bite things, it is recommended to go to the hospital for examination first, and follow the doctor’s instructions for treatment.