优化小螺丝稳定性:对螺丝插入角的有限元研究
Yasin Akbulut1, Serhat Ozdemir2
1Department of Orthodontics, Kocaeli Health and Technology University, 41275 Kocaeli, Turkey.
Biomimetics (Basel, Switzerland)
|October 28, 2025
概括
ортодонтика迷你螺杆插入角度显著影响骨压力和位移. 一个45度的角度提供了一个平衡的生物机械形状,优化稳定性和减少压力,以获得更好的临床结果.
科学领域:
- 生物材料工程 生物材料工程
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物力学 生物力学
- 有限元分析 有限元分析
背景情况:
- ортодонтика小螺丝提供定,但其生物力学性能取决于插入参数.
- 了解骨接口的应力分布对于优化微螺杆稳定性和尽量减少并发症至关重要.
研究的目的:
- 用3D FEA评估不同小螺丝插入角度 (30°,45°,90°) 对膜骨应力和位移的影响.
- 为了确定最佳的插入角度,提高生物力学稳定性和降低应力度.
主要方法:
- 创建了一个下的3D有限元素模型,其中包含特定的皮质和结性骨层.
- Ti-6Al-4V 迷你螺丝在30°,45°和90°的角度被虚拟插入.
- 应用了2N水平的正负荷,并使用ANSYS工作台分析了·米塞斯的应力和位移.
主要成果:
- 90°的插入角度导致皮层骨压力最高 (58.2 MPa),但排位率最低 (0.023 mm).
- 30°的插入角度产生了较低的应力 (36.4 MPa),但更大的位移 (0.052 mm).
- 45°的角度显示了与中等应力 (42.7 MPa) 和位移 (0.035 mm) 的妥协,在所有组中显示了统计学上显著的差异 (p < 0.001).
结论:
- 微螺杆插入角度极大地调节了生物机械性能和骨反应.
- 45°插入角度提供了平衡的形状,将足够的稳定性与减少的应力度相结合,这有利于临床成功.
- 手术参数,如插入角度,对于有效的正牙 anchorage,与材料特性一样重要.
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