舌侧矫治内收下前牙的三维有限元建模及验证
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摘要
多层螺旋计算机体层摄影(CT)扫描获取志愿者的下颌CT图像,通过Mimics 20.0、Geomagic studio 2014、Unigraphics NX 10.0及Ansys Workbench 18.2软件的综合使用,建立了2个包含下颌骨、下牙列、牙周膜、舌侧托槽、弓丝、微种植体、牵引钩等的个体化舌侧矫治内收下前牙阶段的三维有限元模型(3-D FEMs)。对模型初步加载工况进行验证,验证结果符合临床实际,可以为进一步深入研究舌侧矫治的生物力学效应提供有效平台。
Multi-slice spiral computed tomography was applied to scan volunteer′s mandible. Mimics 20.0, Geomagic studio 2014, Unigraphics NX 10.0 and Ansys Workbench 18.2 were employed to develop two three-dimensional finite element models(3-D FEMs) with mandible, dentition, periodontal ligament, customized lingual appliance, micro-implants, traction hooks, et cetera during mandibular anterior teeth retraction. The effectiveness of the 3-D FEMs was validated by loading working conditions and the validation results were consistent with actual clinical situation. The 3-D FEMs can be used for the further research of biomechanics for the lingual orthodontics.
Multi-slice spiral computed tomography was applied to scan volunteer′s mandible. Mimics 20.0, Geomagic studio 2014, Unigraphics NX 10.0 and Ansys Workbench 18.2 were employed to develop two three-dimensional finite element models(3-D FEMs) with mandible, dentition, periodontal ligament, customized lingual appliance, micro-implants, traction hooks, et cetera during mandibular anterior teeth retraction. The effectiveness of the 3-D FEMs was validated by loading working conditions and the validation results were consistent with actual clinical situation. The 3-D FEMs can be used for the further research of biomechanics for the lingual orthodontics.
引文
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[3] 蔡留意,林久祥,张月兰,等.个体化舌侧矫治器微种植体支抗滑动法内收上前牙的三维有限元模型的构建[J].中华口腔正畸学杂志,2014,21(1):14-8.
[4] 刘刚,蔡留意,张月兰,等.个体化舌侧矫治微种植体远移下牙列有限元模型的构建与验证[J].安徽医科大学学报,2018,53(7):1129-34.
[5] Hamanaka R,Yamaoka S,Anh T N,et al.Numeric simulation model for long-term orthodontic tooth movement with contact boundary conditions using the finite element method[J].Am J Orthod Dentofacial Orthop,2017,152(5):601-12.
[6] 李九军,张静,陈凤山.牙周膜弹性模量的生物力学测定[J].口腔医学研究,2014,30(11):1099-102.
[7] Jo A,Mo S S,Lee K J,et al.Finite-element analysis of the center of resistance of the mandibular dentition[J].Korean J Orthod,2017,47(1):21-30.
[8] Fayed M M,Pazera P,Katsaros C.Optimal sites for orthodontic mini-implant placement assessed by cone beam computed tomography[J].Angle Orthod,2010,80(5):939-51.
[9] Baumgaertel S,Jones C L,Unal M.Miniscrew biomechanics:Guidelines for the use of rigid indirect anchorage mechanics[J].Am J Orthod Dentofacial Orthop,2017,152(3):413-9.