不同框架和植入器角度的比较在全在四和六的概念:一个有限元分析
Cumhur Korkmaz1, Selin Ertem Aydın1
1Department of Prosthodontics, University of Health Sciences, Hamidiye Faculty of Dentistry, Istanbul, Turkey.
Clinical implant dentistry and related research
|July 8, 2025
概括
聚乙基 (PEEK) 框架在四合一和六合一概念中比- (Co-Cr) 和 (Ti) 的应力更高. 增加后部植入物角度也增加了压力度.
科学领域:
- 牙科生物力学 牙科生物力学
- 牙修复 牙修复 牙修复 牙修复 牙修复
- 材料科学是一种材料科学.
背景情况:
- 全在四和全在六的概念被广泛用于完全没有牙的关节的全弓康复.
- 框架材料的选择和植入器的角度显著影响这些假肢的生物力学行为.
研究的目的:
- 用不同的框架材料比较All-on-Four和All-on-Six假肢的生物机械性能:- (Co-Cr), (Ti) 和聚乙烯基 (PEEK).
- 评估后部植入物角 (30°和45°) 对这些概念中的应力分布的影响.
主要方法:
- 为完全没有牙的部创建了三维 (3D) 有限元素模型,基于全对四和全对六的原则.
- 框架的设计采用了Co-Cr,Ti和PEEK的材料特性.
- 模拟涉及施加200N负荷并分析植入物,皮层骨和支柱的Von Mises最大和最小主要应力.
主要成果:
- 与Co-Cr和Ti框架相比,聚乙基 (PEEK) 框架在两种概念中的植入物,皮质骨和支柱上都表现出明显更高的应力值.
- 与Co-Cr框架一起的All-on-Six概念导致了最高的von Mises压力.
- 一个45度的后部植入物角度导致比30度的角度更大的应力值.
结论:
- 在"全在六"概念中增加植入物数量减少了植入物和皮质骨的压力,但增加了对支柱和假肢框架的压力.
- 较高的后部植入物角度与增加的应力度直接相关,突出了精确植入物定位的重要性.
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