华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

硬腭裸露对上颌骨生长发育影响的实验研究

宋庆高,石冰,黄旭,李盛,鲁勇   

  1. 四川大学华西口腔医院 口腔颌面外科,四川 成都610041
  • 收稿日期:2004-02-25 修回日期:2004-02-25 出版日期:2004-02-20 发布日期:2004-02-20
  • 通讯作者: 石 冰,Tel:028-85501521
  • 作者简介:宋庆高(1967-),男,贵州人,副教授,博士,现在遵义医学院附属口腔医院工作
  • 基金资助:

    高等学校优秀青年教师教学和科研奖励基金资助(1999 年)

The Influence to Maxillary Growth by Exposed Bone Wound in Hard Palate of Rat

SONG Qing-gao,SHIBing,HUANG Xu,LISheng,LU Yong   

  1. Dept.ofOral and Maxillofacial Surgery,West China College ofStomatology,Sichuan University, Chengdu610041,China
  • Received:2004-02-25 Revised:2004-02-25 Online:2004-02-20 Published:2004-02-20

摘要:

目的 证实腭裂修复术后硬腭裸露骨面是否是导致上颌骨继发畸形的主要原因,并对其机制进行探讨。方法 选用3周龄雌性SD大鼠48只,随机分成正常对照组和实验组,每组各20只。正常对照组不作任何处理,实验组行左侧硬腭粘骨膜切除。其余8只3周龄雌性SD大鼠以同样方法行左侧硬腭粘骨膜切除,于术后2、5、8、12 d 分别处死动物2只,观察裸露骨的组织变化。结果 正常对照组右侧硬腭平均宽度与所有实验组右侧相比无差异;所有实验组左侧硬腭平均宽度明显小于右侧,裸露骨组织有慢性骨髓炎表现存在。结论 腭裂修复术后硬腭骨面裸露是导致上颌骨继发畸形的重要原因。其作用机制除了由于伤口收缩、瘢痕挛缩、局部血供减少及营养缺乏外,硬腭裸露骨的慢性骨髓炎也是其重要因素之一。

关键词: 腭裂, 骨面裸露, 发病机制

Abstract:

Objective To confirm if denuded bone on lateral aspects of the hard palate of surgical repairs of the cleft palate is the main reason of causing disturbance of facial growth and to investigate the mechanism.Methods 48 SD ratswere employed in the study. Among them 40 animalswere divided into normal control and experimental group randomly. Normal controlwas not op- erated. Hard palate mucoperiosteum on the left side in experimental group were excised. Left hard palate mucoperiosteum in an- other 8 female three-week-old SD ratswere excisedwith same method andwere sacrificed at 2nd, 5th, 8th, and 12th day, respec- tively. The 8 rats were used for histological research.Results The width of all left sides hard palates in experimental group was significantly narrower than right side, and demonstrated statistical difference. Chronic osteomyelitis on the denuded hard palatewas observed.Conclusion The denuded bone wound might be a principal factor for the following maxillary growth deformity in cleft palate patients who received palatoplasty in childhood. The mechanism of causing the deformity might be wound and scar contrac- tion, decreased blood flow and nutrition plus chronic osteomyelitis.

Key words: cleft palate, maxillary growth, denuded bone