中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (20): 3212-3217.doi: 10.3969/j.issn.2095-4344.2014.20.018

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

犬牙槽骨牵张成骨的生物力学和组织学分析

周  苗1,车月娟2,郭明炎2,黄代营3,朴正国1,庾晓伟4,陈松龄3   

  1. 1广州医科大学附属口腔医院口腔颌面外科•口腔医学院•广州口腔疾病研究所,广东省广州市  510140;中山大学孙逸仙纪念医院,2麻醉科,4口腔颌面外科,广东省广州市  510120;3中山大学附属第一医院口腔颌面外科,广东省广州市  510160
  • 收稿日期:2014-03-21 出版日期:2014-05-14 发布日期:2014-05-14
  • 通讯作者: 通讯作者:陈松龄,教授,中山大学附属第一医院口腔颌面外科,广东省广州市 510160
  • 作者简介:周苗,男,1977年生,湖北省洪湖市人,汉族,2009年北京大学口腔医学院毕业,博士,主治医师,主要从事口腔种植、颌骨组织工程和相关生物材料的研究。
  • 基金资助:

    国家自然科学基金(81000421);广东省科技计划重点资助项目(2004B33101010);ITI基金(881-2012)

Biomechanical and histological analysis of alveolar distraction osteogenesis in a canine model

Zhou Miao1, Che Yue-juan2, Guo Ming-yan2, Huang Dai-ying3, Piao Zheng-guo1, Yu Xiao-wei4,       Chen Song-ling3   

  1. 1Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Research Institute of Stomatological Disease, Guangzhou Medical University, Guangzhou 510140, Guangdong Province, China; 2Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China; 3Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China; 4Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong Province, China
  • Received:2014-03-21 Online:2014-05-14 Published:2014-05-14
  • Contact: Chen Song-ling, Professor, Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
  • About author:Zhou Miao, M.D., Attending physician, Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Research Institute of Stomatological Disease, Guangzhou Medical University, Guangzhou 510140, Guangdong Province, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81000421; Key Program of Science and Technology Plan of Guangdong Province, No. 2004B33101010; ITI Fund, No. 881-2012

摘要:

背景:牙槽骨牵张成骨是解决严重牙槽骨萎缩的重要方法,其成骨过程和生物力学对于以后的种植和修复极为重要,目前一直缺少相关的实验研究。
目的:分析犬牙槽骨牵张成骨的生物力学和组织学特点。
方法:先拔除12只杂种犬双侧下颌前磨牙,牙槽骨修整后,制作萎缩牙槽骨模型。3个月后,植入骨内型牙槽骨牵张器。经过7 d的间歇期,以1 mm/d,1次/d的频率进行牙槽骨垂直向增高。在固定期的1,2和3个月,对牵张后的牙槽骨进行临床、生物力学、放射学和组织学检测。
结果与结论:所有牵张器与周围组织愈合良好。牵张结束时,临床和放射学检查显示:萎缩牙槽骨分别增高 (4.80±0.50) mm和(5.12±0.67) mm。组织学检测发现牵张区骨小梁在固定期的1-3个月成熟,其剪切力逐步提高,固定期3个月时和自体骨的剪切力相当。结果显示牙槽骨牵张成骨的组织学和生物力学性能在固定期3个月时与自体骨相当。



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 骨组织工程, 牙槽骨牵张成骨, 力学, 组织学, 牙种植, 犬, 国家自然科学基金

Abstract:

BACKGROUND: Alveolar distraction osteogenesis is an important method for treating alveolar bone atrophy, the osteogenesis process and biomechanics play a crucial role in the following implantation and repair. At present, no related experimental studies are found.
OBJECTIVE: To analyze the biomechanical and histological characteristics of alveolar distraction osteogenesis in a canine model.
METHODS: Twelve adult mongrel canines received premolars extraction and alveoloplasty in mandible to establish an atrophy alveolar model. After 3 months, a segmental alveolar osteotomy was performed in the randomly selected unilateral atrophy alveolar and two intra-osseous distractors were placed. After a 7-days latency period, the alveolar ridge was augmented at a rate of 1.0 mm/d for 5 days. After a consolidation of 1, 2, 
and 3 months, the canines were sacrificed and the specimens of the distracted alveolar bone were harvested for clinical, radiographic, histological and biomechanical analysis.
RESULTS AND CONCLUSION: The alveolar distractors obtained good healing with surrounding tissue. The atrophy alveolar bones were augmented for (4.80±0.50) mm and (5.12±0.47) mm by clinical and radiographic findings immediately after distraction, respectively. The bone trabeculae in the distracted chamber matured from 1 to 3 months of consolidation by histological analysis. The shearing force of alveolar distraction chamber increased from 1 to 3 months. After 3 months’ consolidation, the shearing force of distracted chamber was comparable to host bone. The histological and biomechanical property of distracted alveolar chamber is comparable to host bone after 3 months’ consolidation.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: osteogenesis, distraction, mechanics, histology, dental implantation

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