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目的:构建舌侧矫治技术内收上前牙的整体三维有限元模型,为舌侧矫治技术的生物力学分析奠定基础。方法:对志愿者颌面部进行CBCT扫描,分别运用软件Mimics 14.11,Pro/Engineer 5.0,Geomagic Studio 12,Solidworks 2013及Ansys Workbench 13.0建立有限元模型。结果:建成包括e-Brace托槽、牙齿、牙周膜、牙槽骨、弓丝、微种植体、颊侧透明扣的三维有限元模型包含40个实体,与个性化舌侧矫治器实际情况相近,网格划分后,共有9062170个节点,506498个单元。结论:所建模型具有良好的几何相似性和力学相似性,较真实地模拟了临床实际情况,为进一步探讨个性化舌侧矫治过程中的牙齿移动生物力学机制提供良好基础。
OBJECTIVE: To construct a three-dimensional finite element model of anterior teeth restored with lingual orthodontics and to lay the foundation for the biomechanical analysis of lingual orthodontic techniques. Methods: CBCT was performed on the maxillofacial region of the volunteers. The finite element model was established by software Mimics 14.11, Pro / Engineer 5.0, Geomagic Studio 12, Solidworks 2013 and Ansys Workbench 13.0 respectively. RESULTS: Three-dimensional finite element models including e-Brace brackets, teeth, periodontal ligament, alveolar bone, archwire, micro-implant, buccal clear buckle included 40 entities, Similar, after meshing, a total of 9062170 nodes, 506498 units. Conclusion: The model has good geometric similarity and mechanical similarity, more realistic simulation of the clinical situation, and to provide a good foundation for further exploring the biomechanical mechanism of tooth movement in the process of personalized lingual orthodontics.