应力分布和牙位移分析:用有限元体中不同设计的Jig来分析大毛骨脱落
Hooman Zarif Najafi1, Hamid Reza Pakshir1, Faezeh Bahraini1
1Orthodontic Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
Journal of dentistry (Shiraz, Iran)
|March 17, 2025
概括
用吉格斯进行的尾大骨脱显示前牙侵入,后牙挤出和倾斜. 杆臂的高度影响了牙的移动,但杆类型并没有显著改变应力分布.
科学领域:
- ортодонтика和牙科机械学
- 生物机械分析 生物机械分析
背景情况:
- 二级一级 (CLII) 缺陷是常见的,但最佳的非提取机制疗法仍然未经验证.
- 有效的上大脱是治疗CLII缺陷不需要提取的关键.
研究的目的:
- 为了评估在上大不稳定期间的应力分布和牙位移.
- 用有限元分析比较两个在三个不同的杆臂高度的形设计.
主要方法:
- 创建了顶门,牙周带和支骨的有限元模型.
- 模拟了两个具有不同杆臂高度的形配置.
- 应用了150克的力来分析牙的运动和应力分布.
主要成果:
- 所有测试的配置都导致了舌头和远端冠状倾斜和前牙的侵入.
- 后面的牙表现出语言和远端的倾斜和挤出.
- 牙运动的差异主要归因于杆臂高度的变化.
结论:
- 杆臂的高度是影响牙移动的关键因素,在尾大不稳定期间.
- 形设计没有显著影响应力分布或整体牙运动模式.
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