目的：研究分析下颌骨缺损修复重建中有关修复方法选择，固定方法以及术后并发症的相关问题。
Objecive: To investigate the method selection, rigid fixation and post-operative complications related to the mandibular reconstruction.
结论根据下肢不同病理畸形，选择最佳修复方法，能获得良好效果。
Conclusion According to the different pathologic deformity of the traumatized lower extremity, selecting the preferable repair method can acquire good results.
结论四种核桩冠修复方法为我们提供了前牙残冠残根修复的更多选择。
Conclusion the four methods could all provide more choice for anterior post-core crown prosthesis.
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