| 摘要: |
| ［摘要］ 目的 建立舌侧矫治技术整体内收上前牙的三维有限元模型，为进一步探讨舌侧矫治技术整体内收上前牙的生物力学特征奠定基础。方法 利用志愿者的CT扫描数据及舌侧托槽等实体数据通过一系列专用软件的运行，建立包含上颌骨、牙槽骨、牙周膜、牙（拔除左右第一双尖牙）、舌侧托槽、有牵引钩（不同长度）的舌侧弓丝及上颌腭侧微种植体在内的整体上颌三维有限元模型。结果 建立了牵引钩长度分别为2 mm、4 mm、6 mm、8 mm、10 mm的五个上颌有限元模型，每个模型均包括42个实体模型。结论 所建立的舌侧矫治技术整体内收上前牙阶段具有不同长度牵引钩的整体三维有限元模型，几何相似性强，临床模拟度较高，为后续的模拟加力研究创造了条件。 |
| 关键词: 舌侧正畸 三维有限元 上前牙 生物力学 |
| DOI：10.3969/j.issn.1674-3806.2016.10.02 |
| 分类号:R 783.5 |
| 基金项目:广西自然科学基金项目（编号：2012GXNSFAA053127）；广西第十五批“新世纪十百千人才工程”第二层次人选专项资金资助项目 |
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| Construction of a 3-D finite element model for lingual bracket system used in the retraction of six upper anterior teeth |
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LIU Dai-bin, FANG Zhi-xin, ZHOU Yan, et al.
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Department of Orthodontics, the People′s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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| Abstract: |
| ［Abstract］ Objective To construct a 3-D finite element model（FEM） for lingual bracket system used in the retraction of six upper anterior teeth, and to lay the foundation for further biomechanical study of the retraction of upper anterior teeth in lingual orthodontic treatment.Methods A 3-D FEM including the maxilla, alveolar bone, periodontal ligament, dentition(removal of the two first premolars), lingual brackets, arch wire with hooks(with different length) and micro-implants was constructed through a series of specialized software running based on a volunteer′s CT scan data, lingual brackets and other real items.Results 5 entire 3-D FEMs for lingual appliance with the hook lengths of 2 mm, 4 mm, 6 mm, 8 mm and 10 mm were constructed respectively, and each had 42 volume models.Conclusion The originated 3-D FEMs for lingual appliance have higher geometrical similarity and resemblance of clinical situation, and can set the stage for further biomechanical research during the en-masse retraction of upper anterior teeth. |
| Key words: Lingual orthodontics 3-D finite element Upper anterior tooth Biomechanics |
