下和大骨原纤维的机械特性基于非局部弹性理论
Elaheh Alibeigi Beni1, Alireza Shahidi1, Behnaz Ebadian2
1Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran; Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran.
Biophysical reports
|April 19, 2025
概括
分析了人类大骨中的原纤维的机械特性. 大骨的弹性模量高于下骨,在纳米尺度上有显著差异.
科学领域:
- 生物材料科学 生物材料科学
- 纳米机械学 纳米机械学
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- 原纤维对骨机械性质至关重要.
- 了解骨的纳米级机械特性对于牙科和骨科应用至关重要.
- 骨结构,包括皮层和椎接口,影响机械完整性.
研究的目的:
- 为了研究人类下和上中的原纤维的机械性质.
- 在纳米尺度上比较原纤维的弹性和非局部模块.
- 为了确定骨位置 (皮质与皮质-脊髓接口) 对这些特性的影响.
主要方法:
- 原子力显微镜 (AFM) 纳米缩被用来获得力-缩曲线.
- 弹性模量是通过分析痕数据来测量的.
- 应用非局部弹性理论来计算纳米级非局部参数.
主要成果:
- 原纤维的弹性模量在上皮层-状骨界面 (4.16 ± 0.18 MPa) 中最高,在下皮层骨 (2.03 ± 0.14 MPa) 中最低.
- 大骨中的原纤维体表现出比下骨更高的弹性模量.
- 弹性模量在皮质 - 脊髓骨接口处比两下皮质骨的弹性模量更大.
- 非局部参数在0.430~0.483nm之间,缩放参数e0在0.269~0.302之间,其中最大的值在上皮层与尾骨界面.
- 在纳米级和大规模弹性模块之间观察到一个显著的差异.
结论:
- 原纤维的机械性质在下骨和大骨之间,以及皮质和皮质 - 脊柱骨区域之间有很大差异.
- 上皮层 - 脊椎骨界面在纳米尺度上表现出优异的机械特性.
- 非局部弹性理论为骨中的原纤维的纳米级机械行为提供了宝贵的见解.
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