口腔医学研究

口腔医学研究 ›› 2019, Vol. 35 ›› Issue (1): 60-63.DOI: 10.13701/j.cnki.kqyxyj.2019.01.014

• 口腔颌面外科学研究 • 上一篇    下一篇

下颌升支后缘上移重建下颌髁突对下颌骨生长发育影响的实验研究

郑德鑫1, 罗丹1,2, 满城1*, 江海涛1, 程娇1, 高思继3   

  1. 1. 遵义医学院附属口腔医院口腔颌面外科 贵州 遵义 563000;
    2. 贵州医科大学附属口腔医院口腔颌面外科 贵州 贵阳 550004;
    3. 遵义市红花岗区口腔医院 贵州 遵义563000
  • 收稿日期:2018-07-11 出版日期:2019-01-18 发布日期:2019-01-28
  • 通讯作者: 满城,E-mail:mancheng1106@163.com
  • 作者简介:郑德鑫(1992~ ),男,贵州人,住院医师,硕士在读,主要从事正颌及关节外科研究工作。
  • 基金资助:
    贵州省科技厅联合基金( 编号: 黔科合J 字LKZ[2013]09号);贵州省口腔医学研究生教育创新基地(编号:黔教研合CXJD字[2014]005);遵义医学院博士启动基金(编号:F-458)

Growth of Mandible after Condylar Reconstruction by Posterior Border of Mandibular Ramus

ZHENG De-Xin1, LUO Dan1,2, MAN Cheng1*, JIANG Hai-Tao1, CHENG Jiao1, GAO Si-Ji3   

  1. 1. Department of Oral and Maxillofacial Surgery, Zunyi Medical College, Zunyi 563000, China;
    2. Department of Oral and Maxillofacial Surgery, Guizhou Medical University, Guiyang 550004, China;
    3. The Stomatological Hospital of Zunyi, Zunyi 563000, China
  • Received:2018-07-11 Online:2019-01-18 Published:2019-01-28

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摘要： 目的:探讨下颌升支后缘上移重建下颌髁突对下颌骨生长发育的影响。方法:20只幼年山羊随机分为A(n=10)和B(n=10)两组,所有动物均行左侧髁突摘除及下颌升支后缘上移术,右侧为正常对照组。术后48周处死所有A组动物,对下颌骨及重建髁突形态进行大体标本观察与测量,术后24周、48周各处死B组5只实验动物进行组织学检查。结果:术后48周双侧下颌骨长度和宽度、升支高度及宽度无明显差异,重建髁突表面再生软骨与正常关节软骨结构相似,但体积较正常侧明显增大。结论:下颌升支后缘上移重建下颌髁突未对下颌骨生长发育造成明显影响,且重建髁突改建成接近正常髁突的形态,是一种较好的髁突重建手段。

关键词: 颞下颌关节, 髁突重建, 生长发育, 下颌升支后缘, 山羊

Abstract: Objective: To study the growth of the mandible after condylar reconstruction by the posterior border of the mandibular ramus. Methods: Twenty growing goats were included in this study and divided into group A(n=10)and B (n=10). The left condyles of all animals were surgically removed and reconstructed by the posterior border of the mandibular ramus and fixed to the mandibular ramus by a L-shape miniplate, and the right side were kept intact as controls. Animals in group A were sacrificed at 48 weeks after operation for the measurement of mandibular growth. Five animals in group B were killed at 24 and 48 weeks after operation for histological examination. Results: No difference was found in mandibular length, mandibular height, ramus height, and ramus width between two sides at 48 weeks postoperatively. The reconstructed condylar size increased significantly. A well-organized fibrocartilage was seen at the neocondylar surface and was similar to the normal articular fibrcartilage. Conclusion: The reconstructed condyle by posterior border of mandibular ramus has the potential to grow under functional stimuli. And the results showed that the new condyle seemed to be an alternative and promising method for condylar reconstruction.

Key words: Temporomandibular joint, Condyle reconstruction, Growth, Posterior border of mandibular ramus, Goat