牙植入物与植入物植入物支的三单元固定假肢在斜负荷下进行的比较数值有限元分析
Hussain D Alsayed1, Islam G Shahin2,3, Noha M Anany2
1Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Odontology
|February 4, 2026
概括
植入式植入式支持牙假体显示出优越的生物机械性能,与斜负荷下的牙植入式设计相比. 石提供了刚性,而PEKK提供了灵活性,影响固定牙假肢的应力分布和变形.
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
- 生物力学 生物力学
背景情况:
- 固定牙假肢需要强大的支系统来承受闭塞力.
- 评估牙植入物和植入物植入物支持假肢的生物力学行为对于长期成功至关重要.
- 材料选择,如和聚乙基基 (PEKK),显著影响假肢的性能.
研究的目的:
- 为了比较由牙植入物支持的固定牙假肢的生物力学性能与植入物植入物配置.
- 研究和PEKK材料在斜负荷下对应力和变形的影响.
- 分析下后部固定假肢不同组件的应力分布.
主要方法:
- 采用三维有限元素分析 (FEA),使用下后部模型.
- 模型包括牙-植入物 (M1,M2) 和植入物-植入物 (M3) 配置.
- 假肢是由或PEKK制成的,并受到斜负荷 (30°,45°).
主要成果:
- 植入式植入式支持假肢 (M3) 在最小的压力下表现出最有利的生物力学行为.
- 混合牙植入型号 (M1,M2) 显示了更高的应力度,特别是M2与PEKK在45°负载下.
- 齐尔科尼亚假体显示出更高的内部应力,但变形较少,而PEKK假体在牙和牙周带 (PDL) 中表现出更大的变形.
结论:
- 植入物-植入物支持的固定牙假体在斜负荷下提供卓越的生物力学稳定性.
- 牙植入物支的假体,特别是前部植入物放置的假体,容易产生更高的应力和变形.
- 材料选择影响性能:石提供了刚性,而PEKK需要谨慎的设计来管理灵活性并优化应力消散.
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