Obiective to study the application of root apex locator to diagnose vertical root fracture.
目的研究应用根尖定位仪诊断牙根纵裂。
To explore clinical features of vertical root fracture (VRF) and analyze the possible causes of VRF.
目的观察研究牙根纵裂的临床特征，分析其发病原因。
Methods: 47 cases were analyzed by respective study to analysis the cauese , clinical characters . diagnosis and prevention methods of vertical root fracture.
方法：通过观察4 7例冠根纵折的病例，对牙位、牙髓状态、牙髓治疗情况进行回顾性分析。
Methods100 molars with vertical fracture were cleaned and fixed by metallic ring. Then root canal treatment (RCT) were completed.
方法100例纵裂磨牙采用先对患牙初步清理复位带环固定根管治疗后全冠修复保存患牙。
Methods100 molars with vertical fracture were cleaned and fixed by metallic ring. Then root canal treatment (RCT) were completed.
方法100例纵裂磨牙采用先对患牙初步清理复位带环固定根管治疗后全冠修复保存患牙。
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