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颅颌面坚强内固定(五)骨质不良下颌骨骨折的手术治疗
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- Author:
- No author available
- Journal Title:
- Chinese Journal of Stomatology
- Issue:
- 12
- DOI:
- 10.3760/cma.j.issn.1002-0098.2013.12.014
- Key Word:
- No keyword available
Abstract： 一、概念萎缩性(atrophic)、感染性(infected)和粉碎性(comminuted)下颌骨骨折统称为“骨质不良下颌骨骨折”[1].它们在血液供应、生物力学和骨质结构方面区别于正常下颌骨.萎缩性下颌骨多出现在老年人,与老年人牙齿长期缺失有关,但并非全部是缺牙所致.萎缩性下颌骨也有发育性或病理性原因所致,因此又区别于无牙颌导致的下颌骨萎缩.萎缩性下颌骨主要表现为牙槽嵴丧失、骨高度不足、骨质疏松、骨皮质硬化和内源供血不足(供血主要来自骨膜).一旦发生骨折,多为“折裂式”粉碎型,如处理不当,易迁延愈合或导致骨不连接.
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