在提取空间关闭时,不同初始后部倾斜的生物力学影响用清晰的对齐器:有限元分析
Yiru Jiang1, Jue Wang2, Lingling Hu1
1Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Zhejiang Provincial Clinical Research Center for Oral Diseases, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China.
概括
最初的后牙角化显著影响清晰的对齐器空间关闭生物力学. 远距离倾斜减少了不必要的牙运动,优化了正牙结果.
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
- 牙科技术 牙科技术
背景情况:
- 提取空间的关闭是正牙治疗的关键阶段.
- 清晰对齐器为牙移动提供了一种现代化的方法.
- 了解生物力学效应对于治疗可预测性至关重要.
研究的目的:
- 为了评估后牙的不同初始半距离倾斜的生物力学后果.
- 为了评估这些倾向对空间封闭的影响,使用透明对齐器处理.
- 在质量收缩过程中分析三维牙运动.
主要方法:
- 开发了三种有限元模型,模拟第一个前的提取空间关闭.
- 模型代表的后牙有15°的面部倾斜,直立的位置,和10°的远部倾斜.
- 模拟的质量收缩使用12个对齐器模型与不同的后部反倾倒设计.
主要成果:
- 后面的牙表现出增加的牙冠和减少的远距离根运动与牙倾斜.
- 根的侵入增强了,而皇冠的侵入减少了.
- 远距离倾斜减少了切肢收缩和舌头倾斜.
- 渐进式反倾倒设计减少了后面的 mesial 倾倒和前面的语言倾倒.
结论:
- 后面牙的初始半距离倾斜在清晰对齐器空间关闭期间显著影响生物力学.
- 远距离倾斜似乎更有利于控制前后牙的运动.
- 正牙医必须考虑后牙角化,以获得可预测的结果,使用清晰的对齐器.
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