目的根据上颌骨解剖学的特点，探讨经下唇、颌下入路行上颌骨切除术的方法及优势。
Objective to find a new and practical approach of full maxillectomy by the path along lower lip and the lower jaw according to the anatomic characteristics of maxilla.
行死骨扩大切除术，放射性颌骨骨髓炎的治愈率可达92%。
The cure rate of ROJ was 92% by extensive resection of sequestrum.
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