前牙根折扩大针固定修复探讨顾辉１９９１年至今，对因外力所致根折的前牙，采用根管内置留扩大针以保存、加固牙齿，观察１年以上，效果基本满意。共治疗８例，其中男性６例，女性２例，上中切牙、侧切牙各４例，７例成功。根折患牙先行常规根管处理，数日后如无异常，选... Discussion on the fixation and repair of anterior root enlargement needle GU Hui From 1991 to the present, the anterior root tooth root caused by external force was used to preserve and reinforce the teeth by using the built-in enlarged root canal, and the results were basically satisfactory. A total of 8 cases were treated, including 6 males, 2 females, 4 upper and middle incisors and 4 lateral abluminals, all of which were successful in 7 cases. Root fracture of the first conventional root canal treatment, a few days later, if no abnormalities, choose ...