隐形矫治器中尖牙移动设计的三维有限元分析

doi:10.13701/j.cnki.kqyxyj.2024.04.012

口腔医学研究 ›› 2024, Vol. 40 ›› Issue (4): 343-348.DOI: 10.13701/j.cnki.kqyxyj.2024.04.012

隐形矫治器中尖牙移动设计的三维有限元分析

陈精诚^1,2, 赵梦丽^2,3, 程志恒^1,2, 张吉利^1,2, 潘研^2,4, 刘昕^2*

1.皖南医学院安徽芜湖 241000;
2.合肥市口腔医院安徽合肥 230000;
3.蚌埠医学院安徽蚌埠 233000;
4.安徽医科大学安徽合肥 230000;

收稿日期:2023-11-13 发布日期:2024-04-22
通讯作者: *刘昕,E-mail:closehun@163.com
作者简介:陈精诚(1996~ ), 男, 安徽合肥人, 医师, 硕士, 研究方向:正畸生物力学。
基金资助:
合肥市卫生健康应用医学研究项目基金(编号:Hwk2022yb035)

Three-dimensional Finite Element Analysis of Different Intrusion Mechanics Designs for Canines in Clear Aligners

CHEN Jingcheng^1,2, ZHAO Mengli^2,3, CHENG Zhiheng^1,2, ZHANG Jili^1,2, PAN Yan^2,4, LIU Xin^2*

1. Wannan Medical College, Wuhu 241000, China;
2. Hefei Stomatological Hospital, Hefei 230000, China;
3. Bengbu Medical College, Bengbu 233000, China;
4. Anhui Medical University, Hefei 230000, China

Received:2023-11-13 Published:2024-04-22

摘要/Abstract

摘要： 目的: 研究隐形矫治器前牙内收过程中尖牙的最佳力学设计。方法: 本研究选取1名成年患者的CBCT影像学数据构建出上颌牙列以及隐形矫治器的有限元仿真模型,并根据内收角度的差异从0°~90°分别设计出19组载荷,依照隐形矫治器的最大移动步幅将相应的力学分配设计加载到模型上,比较分析其力学结果的差异性。结果: 尖牙牙体各部分在不同力学设计下冠根呈现不同的移动现象,并随着矢状向分力减小与垂直向分力的增加呈现不同平面上移动量的衰减或递增。结论: 隐形矫治器前牙内收角度区间设计在40°~50°对于尖牙来说是最佳的力学分配设计,但在此基础上还需要添加额外设计来控制轴倾和转矩的表达。

关键词: 三维有限元分析, 隐形矫治器, 尖牙力学设计

Abstract: Objective: To investigate the optimal mechanical design for canines during anterior teeth intrusion with Clear Aligners. Methods: CBCT imaging data from an adult patient was selected and constructed physical models of the maxillary dental arch and invisible aligners through in vitro simulation. Nineteen sets of loads were designed based on different degrees of intrusion angles from 0 to 90 degrees. These mechanical distributions were loaded onto the models according to the maximum movement stride of the invisible aligners, and the differences in mechanical results were compared and analyzed. Results: The various parts of the canines showed different movement phenomena under different mechanical designs for the crown and root, and showed attenuation and incremental movement in different planes as the sagittal component force decreased and the vertical component force increased. Conclusion: The optimal mechanical distribution design for canines is in the range of 40 to 50 degrees for anterior teeth intrusion angle of clear aligners. However, additional design elements are required to control tooth axis and torque expression.

Key words: three-dimensional finite element analysis, clear aligners, canine mechanical design

陈精诚, 赵梦丽, 程志恒, 张吉利, 潘研, 刘昕. 隐形矫治器中尖牙移动设计的三维有限元分析[J]. 口腔医学研究, 2024, 40(4): 343-348.

CHEN Jingcheng, ZHAO Mengli, CHENG Zhiheng, ZHANG Jili, PAN Yan, LIU Xin. Three-dimensional Finite Element Analysis of Different Intrusion Mechanics Designs for Canines in Clear Aligners[J]. Journal of Oral Science Research, 2024, 40(4): 343-348.

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隐形矫治器中尖牙移动设计的三维有限元分析

Three-dimensional Finite Element Analysis of Different Intrusion Mechanics Designs for Canines in Clear Aligners

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