平台切换对后部植入物压力分布的影响的有限元分析 在轴向和斜向负载条件下放置在不同骨类型的后部植入物中
Kanika Yadav1, Sandeep Kumar1, Rajnish Aggarwal1
1Department of Prosthodontics, Surendera Dental College and Research Institute, Sri Ganganagar, IND.
Cureus
|July 28, 2025
概括
牙科植入物中的平台切换减少了骨压力,特别是在部 (D3) 和下部 (D2),在轴和斜负荷下. 这种方法增强了应力分布,提供了生物力学优势.
科学领域:
- 生物材料科学 生物材料科学
- 牙科植入物学 牙科植入物学
- 有限元素分析 (FEA)
背景情况:
- 研究牙科植入物的应力分布对于长期成功至关重要.
- 在不同的骨密度 (D2下,D3) 和负载条件下比较平台切换和非平台切换植入物是必不可少的.
研究的目的:
- 为了比较平台切换与非平台切换植入物的应力分布.
- 用有限元素分析 (FEA) 来分析D2 (下) 和D3 (大) 类型骨头在轴和斜负荷下的应力模式.
主要方法:
- 从CBCT数据开发出后 (D3) 和下 (D2) 的3D模型.
- 模拟植入物具有平台切换 (3.2毫米) 和非平台切换 (4.2毫米) 的支柱,包括冠.
- 使用 ANSYS Workbench 应用轴向和斜负荷 (200 N) 来评估·米塞斯应力分布.
主要成果:
- 在所有负载条件下,平台切换始终降低了D2和D3骨头的应力值,特别是在骨.
- 部 (D3) 模型与部 (D2) 模型相比,显示出更高的整体压力度.
- 虽然减少了峰值应力,但平台切换增加了植入物和支柱部件内部的内部应力.
结论:
- 平台切换增强了应力分布,并减少了骨应力,在下骨 (D2) 和大骨 (D3) 两部分.
- 平台切换的好处在斜式负载条件下尤其明显.
- 这种方法为不同骨质的牙植入物提供了改进的生物力学结果.
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