Fig. 2 Anterior-posterior border deossification behind L5 of lumbar with PLMN, arcuated bone block was bilateral faulting and palinal, the right crypt and spinal canal were stenotic.

图2 L5后PLMN 椎体后下缘骨质缺损，其后有弧形骨块双侧断裂并后移，右侧隐窝狭窄、椎管狭窄（略）

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Objective To investigate root canal curvature in maxillary anterior teeth.

目的了解上颌前牙根管弯曲情况。

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Objective: To evaluate the clinical of using prefabricated cylindrical root canal pin to lengthen the clinical crown and restoring anterior tooth and premolar defect with PFM.

目的：评价应用预成圆柱形根管钉对前牙牙体缺损患者冠再接后烤瓷修复体的临床效果。

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"The peculiarity of this case is that the tip of the harpoon lodged itself between the anterior vertebral canal and the medullary canal, " he said.

BBC: Brazilian woman survives harpoon shooting