在轴向和非轴向负载过程中对植入物和骨干接口在不同宽度的应力分布进行比较评估:有限元分析
Deepika R Pai1, Damodar M Prabhu2, Abdul Sameeh M3
1Department of Prosthodontics, Crown and Bridge, Century International Institute of Dental Sciences and Research Centre, Poinachi, IND.
Cureus
|July 22, 2024
概括
较大的牙植入物直径可以改善植入物骨接口的应力分布. 轴负荷是最有利的方向,增强植入物寿命.
科学领域:
- 生物材料科学 生物材料科学
- 生物力学 生物力学
- 牙科植入物学 牙科植入物学
背景情况:
- 牙植入成功取决于植入物和周围骨之间的最佳应力分布.
- 了解不同的植入物直径如何影响应力传递对于假肢设计至关重要.
研究的目的:
- 研究不同牙植入物直径对植入物骨接口应力分布的影响.
- 用有限元分析分析轴向和非轴向负载条件下分析应力传递.
主要方法:
- 三维有限元素分析 (FEA) 的下模型与不同的植入物直径 (3.5mm至6.0mm).
- 在植入物上模拟轴向,口舌和面距负荷.
- 利用圆束CT数据和专门的建模软件 (CATIA,ANSYS).
主要成果:
- 在植入物部附近的皮质骨中始终观察到最大应力,无论植入物直径或负载如何.
- 由于表面积增加,更大的植入物直径使应力分布更有利.
- 在所有模型中,不到一半的植入物应力被转移到周围的皮质骨.
结论:
- 增加牙植入物直径有助于在骨植入物界面上的应力分布更加均.
- 轴负荷是一个有益的方向,最大限度地减少对植入物寿命的负面影响.
- FEA为优化牙科植入物设计提供了有价值的见解,以改善临床结果.
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