老年患者由于牙体组织及牙周组织的增龄性变化,干髓术后牙体脆性明显增加,极易造成牙体纵裂。而处理后牙纵裂的传统方法为折裂于根下方者均整体拔除。处理此类患牙时可以尽量保存该患牙为治疗基础。牙体经根管治疗术后消除了根尖周感染的可能,部分伴牙周炎症者,牙周经治疗后也可阻止牙周病变继续发展。这样,对于折裂后只能部分保留的患牙,采用根管钉加强固位,全冠修复后,对基本阻断口腔环 Elderly patients due to age-related changes in tooth tissue and periodontal tissue, dental pulp after the crisp increased significantly, likely to cause longitudinal teeth. The treatment of posterior teeth split the traditional method of fracture in the roots were removed as a whole. When dealing with such teeth can try to save the teeth as the basis for treatment. Dental root canal treatment of postoperative periapical weeks eliminate the possibility of infection, some with periodontitis, periodontal treatment can also prevent the progression of periodontal disease. In this way, after fracture for only part of the retained teeth, the use of root canal nail reinforcement retention, crown repair, the basic block of the oral cavity ring