生物机械分析的总大脱使用infrazygomatic山顶小螺杆:一个有限元素分析研究研究
Alessandro Schwertner1, Renata Rodrigues de Almeida-Pedrin2, Thais Maria Freire Fernandes Poleti2
1Post-Doctorate Student, Department of Orthodontics, University of North Paraná, UNOPAR, Londrina, PR, Brazil.
Progress in orthodontics
|March 11, 2024
概括
动力手臂的高度 (PA) 在正义牙脱节过程中显著影响大切口和狗的运动. 增加PA高度降低了切肢挤出和舌头倾斜,同时增加了狗的挤出和舌头倾斜.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物机械分析分析
- 牙科建模 牙科建模
背景情况:
- 部脱对于治疗II类缺陷的治疗至关重要.
- 微型螺丝提供稳定的骨架 anchorage.
- 了解力系统力学是预测牙运动的关键.
研究的目的:
- 在上脱稳过程中分析直切刀和狗的运动倾向.
- 为了比较三个不同的动力臂 (PA) 高度的影响.
- 用有限元素分析 (FEA) 来进行生物力学评估.
主要方法:
- 根据CBCT扫描,开发了三种上的有限元素模型.
- 使用IZC小螺丝和不同的PA高度 (4,7,10毫米) 模拟的脱稳力.
- 评估前牙变形和应力分布使用·米塞斯等效.
主要成果:
- 在前牙的顶和椎根区域发现了应力分布的显著差异.
- 较低的PA高度 (4毫米) 导致了更大的切口挤出和舌头倾斜.
- 较高的PA高度 (10毫米) 显示了口腔倾斜和侧切口的侵入,没有中央切口挤出.
结论:
- 大切口和狗的直接运动倾向因PA高度而有所不同.
- 增加PA高度将刺刀的倾斜从舌头转移到口腔,并减少挤出.
- 狗的挤出和舌头倾斜随着PA高度的增加而增加.
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