残根残冠的主要修复治疗方法之一,核—桩—冠修复。残根残冠在临床上多见于后牙如何修复,方法较多,其中核—桩—冠修复后牙多根管不平行常给铸造桩核的制做及就位带来困难,一般常由于放弃某根管或降低其长度而导致修复失败,或为获得其共同就位道,根管壁局部过薄影响根的强度甚 One of the main repair and treatment of residual root and crown, crown - pile - crown repair. Remaining residual crown in clinical more common in the repair of the posterior teeth, there are many ways, including nuclear - post-crown restoration of multi-root canal is not parallel to the normal manufacturing and placement of post-core nuclear difficulties, usually due to Give up a root canal or reduce its length and lead to failure to repair, or to obtain their common place Road, root canal wall is too thin to affect the strength of the root