用清晰对齐器进行不同下完全脱稳方法的生物力学分析:有限元素研究
Sewoong Oh1, Youn-Kyung Choi2, Sung-Hun Kim1
1Department of Orthodontics, Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Korea.
Korean journal of orthodontics
|November 21, 2023
概括
清晰对齐器治疗 (CAT) 用于下脱稳表明牙运动因引部位和方向而异. 了解生物力学是有效治疗结果的关键.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物力学 生物力学
- 牙科材料 牙科材料
背景情况:
- 清晰对齐器治疗 (CAT) 越来越多地用于复杂的正牙运动.
- 通过CAT了解下脱的生物力学原理对于可预测的结果至关重要.
- 有限元法 (FEM) 提供了一个有价值的工具,用于分析复杂的生物力学相互作用在正牙科.
研究的目的:
- 使用清晰对齐器处理 (CAT) 分析下完全失稳的生物力学差异和牙位移模式.
- 评估引方向,方法和位点在基于CAT的脱稳定过程中对牙运动的影响.
- 在各种不稳定场景下,研究清晰对齐器内的应力分布.
主要方法:
- 创建了四个有限元素分析 (FEA) 模型来模拟下牙.
- 对不同的引部位 (狗或第一前) 和方向 (-30°到+30°到闭合平面) 施加了1.5N的脱离力.
- 引方法包括精密切割的子和按;分析侧重于初始牙位移和对齐器中的·米塞斯应力.
主要成果:
- 用CAT进行部总脱稳,证明了基于力方向的闭合平面的顺时针或反时针旋转.
- 对于单个牙来说,梅西奥迪斯塔尔倾斜比身体运动更为普遍.
- 牙移位模式更多地受到引部位的影响,而不是引方法.
- 清晰的对齐器弹性变形导致了意想不到的舌头倾斜或前牙挤出.
结论:
- 在基于CAT的下完全脱稳过程中,牙的移位受到所选择的引策略的显著影响.
- 精心选择和对引部位和方向的生物力学理解对于成功的下脱是必不可少的.
- FEA提供了对优化CAT协议的见解,以实现可预测的牙移动,并最大限度地减少不必要的副作用.
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