中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (11): 1749-1754.doi: 10.3969/j.issn.2095-4344.2014.11.018

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

减阻牵张成骨远移尖牙的三维有限元分析

舒林径1,薛俊杰2,3,王 璟4,徐远志4,王飞宇1,唐小山4   

  1. 1四川大学华西口腔医学院,四川省成都市 610041;2口腔疾病研究国家重点实验室,四川大学华西口腔医院正畸科,四川省成都市 610041;3新疆医科大学第一附属医院口腔正畸科,新疆维吾尔自治区乌鲁木齐市 830000;4同济大学附属第十人民医院口腔科,上海市 200072
  • 修回日期:2014-01-12 出版日期:2014-03-12 发布日期:2014-03-12
  • 通讯作者: 薛俊杰,在读博士,主治医师,口腔疾病研究国家重点实验室,四川大学华西口腔医院正畸科,四川省成都市 610041;新疆医科大学第一附属医院口腔正畸科,新疆维吾尔自治区乌鲁木齐市 830000
  • 作者简介:舒林径,女,1992年生,重庆市人,汉族,四川大学华西口腔医学院在读硕士,主要从事口腔正畸及口腔种植的生物力学研究。
  • 基金资助:

    新疆维吾尔自治区自然科学基金青年基金项目支持(2011211B35)

Three-dimensional finite element analysis of canine distalization through reducing resistance and distraction osteogenesis

Shu Lin-jing1, Xue Jun-jie2, 3, Wang Jing4, Xu Yuan-zhi4, Wang Fei-yu1, Tang Xiao-shan4   

  1. 1West China College of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China; 2Department of Orthodontics, State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China; 3Department of Orthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China; 4Department of Stomatology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
  • Revised:2014-01-12 Online:2014-03-12 Published:2014-03-12
  • Contact: Xue Jun-jie, Studying for doctorate, Attending physician, Department of Orthodontics, State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China; Department of Orthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • About author:Shu Lin-jing, Studying for master’s degree, West China College of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
  • Supported by:

     the Natural Science Foundation for the Youth of Xinjiang Uygur Autonomous Region, No. 2011211B35

摘要:

背景:牙周膜牵张成骨通过力作用于牙周膜,带动牙齿移动;牙槽骨牵张成骨是通过整个骨盘的位移,达到牙齿移动的效果。
目的:建立基于健康成人的、3种不同状态下的上下颌三维有限元模型,采用三维有限元方法对比研究3种模型在力的加载下应力分布和瞬时位移情况。

方法:模型1通过多种软件结合建立常规状态下、模型2建立牙周膜减阻牵张成骨后、模型3建立牙槽骨减阻牵张成骨后移动尖牙的三维有限元模型,分别模拟力的加载。

结果与结论:3种模型的最大瞬时位移均发生在尖牙近中牙冠上1/3处,其值模型2 >模型 3 >模型1;最大等效应力均位于上颌尖牙远中侧牙槽嵴处,其值模型2<模型1<模型3。说明牙槽骨和牙周膜减阻牵张成骨均能有效减小牙移动阻力,增加尖牙瞬时位移,且去除尖牙远中骨质效果更为显著。两种方法成功避免了支抗丧失,但尖牙存在远中倾斜趋势,临床工作中应采取相应措施加以控制。



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, 组织工程, 牵张成骨, 牙齿移动, 三维有限元法, 牙合畸形, 尖牙, 牙槽间隔减阻, 生物力学, 正畸治疗, 应力分析, 数字化口腔科技术, 新疆维吾尔自治区自然科学基金

Abstract:

BACKGROUND: Peridental membrane distraction osteogenesis exerts the functions at peridental membrane and leads to tooth movement. Alveolar bone distraction osteogenesis produces tooth movement through the displacement of the whole bone plate.

OBJECTIVE: To establish three-dimensional finite element model of upper and lower jaw of healthy adults under three different conditions, and to compare the stress distribution and distal movement of the models using three-dimensional finite element analysis method.
METHODS: Model 1: three-dimensional finite element model of the canine under normal conditions using a variety of software; Model 2: three-dimensional finite element model of the canine after distracting osteggenesis of the periodontal ligament; Model 3, three-dimensional finite element model of the canine after reducing resistance and distracting osteggenesis of the alveolar bone. The force loadings were stimulated among these models.

RESULTS AND CONCLUSION: The biggest displacements on those three models occurred in canine crown on 1/3, and the displacement quantity on canine was model 2 > model 3 > model 1. The biggest equivalent stress concentrated in distal alveolar crest, and the equivalent stress was model 2 < model 1 < model 3. In the process of canine distal movement, reducing bone resistance and distracting osteggenesis, especially distal alveolar crest of canine, can accelerate the tooth moving speed effectively. And the two ways successfully avoid the loss of anchorage. We should notice that the canine has distal motion tendency under the action of force, appropriate measures should be taken to control it in clinical work.



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: malocclusion, periodontal ligament, finite element analysis

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