口腔医学研究

口腔医学研究 ›› 2016, Vol. 32 ›› Issue (6): 596-600.DOI: 10.13701/j.cnki.kqyxyj.2016.06.011

• 临床研究论著 • 上一篇    下一篇

舌侧矫治不同牵引位置内收上前牙的三维有限元分析

高雪1 ,张春芝2 ,张栋梁3*   

  1. 1. 首都医科大学电力教学医院口腔科 北京 100073;
    2. 油田总医院口腔科 吉林 松原 138006;
    3. 首都医科大学附属北京口腔医院王府井部正畸科 北京 100006
  • 收稿日期:2015-10-19 出版日期:2016-06-26 发布日期:2016-06-22
  • 通讯作者: 张栋梁,电话:13552593823
  • 作者简介:高雪(1988~ ),女,北京人,硕士,主要从事口腔正畸临床研究。
  • 基金资助:
    北京市自然科学基金资助项目(编号:3122018)

Tooth Movement Tendency with Different Traction Positions in Lingual Orthodontics: A 3-Dimensional Finite Element Analysis.

GAO Xue1, ZHANG Chun-zhi2, ZHANG Dong-liang3*.   

  1. 1. Beijing Electric Power Hospital Capital Medical University, Beijing 100073, China;
    2. Department of Stomatology, General Hospital of Oilfield, Songyuan 138006, China;
    3. Department of Orthodontics, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing 100006, China
  • Received:2015-10-19 Online:2016-06-26 Published:2016-06-22

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摘要： 目的:分析当牵引钩位于不同位置时,个性化舌侧矫治器微种植体支抗滑动法内收上前牙时牙列中牙齿的位移情况。方法:在全牙列、牙周膜、牙槽骨、个性化舌侧矫治器的整体三维有限元模型上,分析当牵引钩分别位于尖牙近中与尖牙远中,微种植体支抗滑动法关闭间隙过程中前牙及后牙三维方向上的变化。结果:两组实验结果显示,当将牵引钩放置于尖牙远中时,前牙区矢状方向的回收更均匀,牙弓的缩窄出现在尖牙、第二前磨牙区域,但垂直向上的“拱形效应”更明显。结论:利用个性化舌侧矫治器滑动法回收间隙时,宜将牵引钩放置于尖牙远中,尖牙、第二前磨牙区域牙弓的缩窄有效抵抗了水平向“拱形效应”。对于垂直向上明显的"拱形效应",应当配合在弓丝上打10°的摇椅抵抗负效应。

关键词: 个性化舌侧矫治器, 滑动法, 牵引位置, 三维有限元

Abstract: Objective: To analyze the tooth movement tendency during anterior retraction with micro implant and sliding method in the customized lingual appliance when traction position is different. Methods: An entire 3-D finite element (FEM) model was constructed, including dentition, periodontal ligament (PDL), alveolar bone, and customized lingual appliance. Using this 3-D FEM model, at different traction positions, mesial or distal to the canine, the anterior teeth and posterior teeth movement tendency during anterior retraction in three dimensions was analyzed. Results: When the lingual anterior retraction hooks (LARHs) were placed distal to the canine, the retraction amount in anterior teeth was more uniformly distributed, dentition constriction appeared in canine and second premolar area, whereas the vertical "bowing effect" was more obvious. Conclusion: During space closure by customized lingual appliance, it is better to locate LARHs distal to the canine. In this way, the decrease of intercanine and interpremolar dental arch width counteracts transverse "bowing effect" effectively. Due to the obvious "bowing effect" in vertical, 10 degrees reverse curve arch wire is necessary to counteract the side effect.

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