Advansync功能矫治器在多颌位下前导下颌的有限元分析

发布时间：2018-10-05 13:54

【摘要】：目的:建立上下颌骨、牙列、颞下颌关节、Advansync功能矫治器导下颌向前的有限元模型,探讨在牙尖交错位、下颌姿势位和最大开口位状态下,下颌骨向前移动的疗效及对下切牙唇倾和解剖合平面的影响。方法:对牙列排齐整平后的安氏II类1分类患者,采用CBCT机(Cone beam CT)进行头颅扫描,得到DICOM格式图像数据。运用Mimics17软件读取获得的DICOM格式数据,进行上下颌骨和牙列模型的初步建立,导出stl格式保存,导入Geomagic Studio2014软件进行模型优化,使用三维建模软件Unigraphics NX8.5软件进行计算机图像处理,将建立的三种颌位三维模型导入ANSYS Workbench15.0软件中再次建立三种颌位的Advansync三维有限元模型并进行分析。结果:获得在三种颌位下包含MBT直丝弓矫治器的Advansync功能矫治器前导下颌的三维有限元模型。在Advansync功能矫治器作用下,从闭口至大张口的运动过程中下颌骨、下切牙有向前向下移动的趋势;解剖合平面趋向顺时针的旋转。结论:研究结果提示Advansync功能矫治器具有促进下颌骨整体向前向下改建的作用。
[Abstract]:Objective: to establish a finite element model of maxillary mandible, dentition and temporomandibular joint Advansync functional appliance to guide the mandible forward, and to explore the position of maxillary position and maxillary opening in the interlocking position of the cusp, mandible position and maximal opening position. Effect of mandibular forward movement and its effect on labial inclination and anatomic conjunctive plane of lower incisor. Methods: the patients with II class 1 were scanned by CBCT (Cone beam CT) to get the image data of DICOM format. Mimics17 software was used to read the data of DICOM format, to establish the upper and lower jaw and dentition models, to export the stl format to save, to import Geomagic Studio2014 software to optimize the model, and to use the 3D modeling software Unigraphics NX8.5 for computer image processing. The three kinds of 3D models of maxillary position were imported into ANSYS Workbench15.0 software and the Advansync 3D finite element model of three kinds of maxillary position was established and analyzed. Results: a three dimensional finite element model of Advansync functional orthodontic mandible with MBT straight wire appliance was obtained in three maxillary positions. Under the action of Advansync functional appliance, the lower incisor moved forward and downward during the movement from closing to opening, and the anatomic plane tended to rotate clockwise. Conclusion: the results suggest that Advansync functional appliance can promote the whole mandibular reconstruction.
【学位授予单位】：新疆医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R783.5

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