《Journal of Oral and Maxillofacial Surgery》 ›› 2016, Vol. 26 ›› Issue (2): 83-87. doi: 10.3969/j.issn.1005-4979.2016.02.002

• Basic Scientific Study • Previous Articles     Next Articles

Mechanism of Action and Morphologic Changes in the Mandible
in Response to Surgery-First Approach: a Rabbit Model

Dan-qing, KANG Fei-wu, ZHOU Xiao-kang, WU Qing,JI Ying-chen, WANG Wei-wei, MA Jia-lei   

  1. Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072,China
  • Received:2015-11-04 Revised:2016-01-31 Online:2016-04-28 Published:2016-06-07

下颌截骨术对兔颌骨非术区骨改建的影响

黄丹青,康非吾,周小康,吴情,纪映辰,王伟伟,马嘉磊   

  1. 同济大学口腔医学院·同济大学附属口腔医院口腔颌面外科,上海牙组织修复与再生工程技术研究中心,上海   200072
  • 通讯作者: 康非吾,教授. E-mail:kangfeiwu@126.com
  • 作者简介:黄丹青(1989—),女,江苏泰州人,住院医师,硕士.

Abstract: Objective:   To study the impact of mandibular osteotomy on bone remodeling. Methods: 12 rabbits were randomly and equally divided into 4 groups . Animals in 3 experiment groups were treated by bilateral mandibular osteotomy, the last group was control. The rabbits in experiment groups were sacrificed on 1-week, 3-week, and 8-week respectively. 3 mandible bone of each group were used for Micro-CT scanning, the other 3 mandible bones were used for histological examination. Results: The bone density of the whole mandible had reduced obviously on 3-week, in addition with a higher count of osteoclasts appeared in alveolar bone of incisor region. On 8-week, bone morphology recovered and showed similarity with the control group. Conclusion: Mechanism of regional acceleratory phenomenon may be related to enhancement of osteoclast differentiation and reduction of bone density.

Key words: bone remodeling, osteotomy, osteoclast, regional acceleratory phenomenon

摘要: 目的:研究正颌手术对非手术区骨组织改建的影响,以更好地了解正颌手术加速颌骨改建的机制。方法:12只新西兰大白兔随机分成4组,每组3只,9只行“双下颌骨磨牙区矢状截骨术”为手术组,3只为对照组。手术组9只按处死时间点分为术后1周组、3周组和8周组。每只动物单侧下颌骨用于Micro?鄄CT扫描,对侧下颌骨用于组织学观察。结果:术后下颌骨整个骨组织发生吸收,在术后3周骨丧失最为显著,在术后8周骨形态恢复到近似对照组。下颌骨前牙区(非手术区)在术后1周至3周骨吸收较对照组活跃,表现为骨皮质内血管增生,出现破骨细胞和骨吸收陷窝,在术后3周达到高峰;在术后8周骨组织则与对照组无异。结论:正颌手术后,颌骨先是骨吸收活跃伴破骨细胞增多,骨改建加速,随后新骨生成,骨组织恢复。

关键词: 骨改建,  ,  , 截骨术,  ,  , 破骨细胞,  ,  , 局部骨加速现象

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