检查各种支柱设计的行为取决于负载使用有限元分析
Mehmet Onur Yağır1,2, Şaduman Şen3, Uğur Şen3
1Electronics and Automation Program, Adapazarı Vocational School, Sakarya University, 54050 Sakarya, Turkey.
Biomimetics (Basel, Switzerland)
|August 28, 2024
概括
这项研究调查了不同的牙植入物支柱设计如何影响应力分布和机械耐用性. 新型设计,特别是具有增加表面积和粘弹性特性的设计,显著改善了负载分布,提高了植入物寿命.
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
- 机械工程 机械工程
背景情况:
- 牙科植入物支柱对于假肢支和寿命至关重要.
- 目前的支柱设计和材料在均的负载分布方面存在局限性,可能导致植入系统故障.
- 优化支柱体几何和材料对于提高生物机械性能和临床成功至关重要.
研究的目的:
- 评估新型牙植入物支柱设计的生物力学性能.
- 通过最大限度地减少应力度来提高植入物-支架连接的机械耐用性.
- 为了实现更均的应力分布,以提高长期植入系统的可靠性.
主要方法:
- 植入物组件的三维建模和创建五个不同的支柱设计 (A-E).
- 使用ANSYS软件进行有限元分析 (FEA),以模拟轴承负载下的应力和变形.
- 统计分析 (克鲁斯卡尔-瓦利斯测试) 用于在不同的支柱模型中比较机械性能.
主要成果:
- 在支柱模型中观察到机械性能的显著差异 (p < 0.001).
- 车型E表现出最低的支柱应力 (9.6MPa),而车型B表现出最高的支柱应力 (97.4MPa).
- 模型E也显示了最低的冠状应力 (17.3 MPa),而模型C具有最高的植入应力 (14.8 MPa).
结论:
- 支柱设计和材料选择极大地影响机械性能和应力分布.
- 粘弹性和增加表面积的支柱设计 (例如,E型) 显示出优越的均负载分布.
- 提出的新型支柱设计为当前临床实践提供了有希望的替代方案,可能会增加牙科植入物的机械寿命.
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