The tooth is broken according to the site of fracture is divided into crown fracture, root fracture, can be taken resin filling, adjust the jaw fixed observation, extraction of the broken end or root canal treatment. 1. Crown fracture. If the crown fracture pulp is not exposed, dentin exposure needs to be desensitized treatment, with enough restorative dentin formation, the use of resin filling to restore the shape, or inlay repair. 2. Root fracture. The apical 1/3 and the middle 1/3 of the root fracture need to be adjusted after splinting and observation, the symptoms of pulpitis, the need for timely root canal treatment. Root neck fracture and gingival sulcus traffic, need to extract the crown end of the tooth after root canal treatment, and then pile core crown restoration. After the tooth is broken, it is recommended to go to the hospital in time to avoid pulpal damage and infection.