上颌牙列生理性支抗控制矫治器三维有限元模型的建立及应力分析

发布时间：2018-04-09 20:11

本文选题：生理性支抗控制矫治器　切入点：有限元分析　出处：《口腔医学研究》2017年03期

【摘要】：目的:建立上颌牙列生理性支抗控制矫治器三维有限元模型并进行应力分析。方法:选取1名个别正常合志愿者,将CT扫描数据输入Mimicsl7.0软件,通过三维重建的方法获得牙齿及颌骨(含皮质骨和松质骨)的三维模型。以stl格式转入逆向工程软件Geomagic Studio,对模型进行精修和细化。矫治器三维模型是在NX软件中设计得到。弓丝定义为几何非线性,将得到的牙齿、颌骨、矫治器及弓丝模型以stp格式输入NX软件进行装配,以ANSYSl5.0软件进行网格划分,最终建立牙齿、皮质骨、松质骨、弓丝、托槽的三维有限元模型。结果:建立了包括牙齿、颌骨、生理性支抗矫治器、弓丝、的三维有限元的整体模型。模拟正畸临床中牙齿的受力情况及位移情况。结论:建立的生理性支抗控制矫治器有限元模型,真实、精确、几何相似性强。可以模拟临床牙齿受力情况和位移趋势,有利于临床对该项技术的理解和应用。
[Abstract]:Objective: to establish three-dimensional finite element model and stress analysis of maxillary dentition physiological Anchorage controlled appliance.Methods: one individual normal volunteer was selected and the CT scan data were input into Mimicsl7.0 software. The 3D model of teeth and jaw (including cortical bone and cancellous bone) was obtained by 3D reconstruction.Stl format is transferred to reverse engineering software Geomagic Studio to refine and refine the model.The three-dimensional model of appliance is designed in NX software.The arch wire is defined as geometric nonlinearity. The resulting tooth, jaw, appliance and wire model are input into NX software in stp format to assemble, and ANSYSl5.0 software is used to mesh the teeth, cortical bone, cancellous bone, arch wire.Three-dimensional finite element model of bracket.Results: a three-dimensional finite element model including teeth, jaw, physiologic Anchorage appliance and arch wire was established.Simulation of orthodontic clinical tooth force and displacement.Conclusion: the established finite element model of physiological Anchorage controlled appliance is true, accurate and geometric similarity.It can simulate the force and displacement trend of clinical teeth, and is beneficial to the understanding and application of this technique.
【作者单位】：新疆医科大学第二附属医院口腔科;
【分类号】：R783.5

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