定制PEEK后芯 (磨和压) 的故障模式和有限元分析
Nour Abdelmohsen1,2, Marwa Wahsh1,3, Maged Zohdy1
1Department of Fixed Prosthodontics, Faculty of Dentistry, University of Ain Shams, Cairo, Egypt.
Odontology
|March 15, 2025
概括
定制的磨砂和压聚乙 (PEEK) 柱子为内牙治疗的牙提供了有效的恢复. 与压 PEEK 和玻璃纤维柱相比,磨 PEEK 柱显示出优越的有利失效模式和最佳应力分布.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 恢复性牙科 恢复性牙科
背景情况:
- 经过内牙治疗的牙需要强大的核心后恢复才能恢复功能.
- 聚乙基 (PEEK) 为牙科应用提供了有前途的机械性能.
- 将PEEK后核心系统与传统玻璃纤维柱进行比较对于临床决策至关重要.
研究的目的:
- 实验性比较磨 PEEK,压 PEEK 和玻璃纤维后核心系统的故障模式.
- 用有限元分析 (FEA) 数字分析这些不同后核心系统中的应力分布模式.
- 评估定制PEEK柱子的临床疗效和生物力学行为.
主要方法:
- 在模拟功能负载下对21个经过内牙治疗的下前进行故障模式的实验评估.
- 测试了三个组:磨 PEEK,压 PEEK 和定制玻璃纤维柱子.
- 用有限元分析 (FEA) 模拟和分析每个恢复系统内的应力分布.
主要成果:
- 磨 PEEK 柱子表现出 100% 的有利失效模式,优于压 PEEK 和玻璃纤维柱子.
- 压PEEK和玻璃纤维柱子显示出可变的故障模式,但更高的比例是有利的结果.
- 对于PEEK,FEA在宫柱区域显示了最高的压力度,而玻璃纤维柱在中/顶部区域显示了更高的压力.
结论:
- 定制磨和压PEEK柱子对于恢复内牙治疗的牙是有效的.
- 磨砂PEEK柱子具有最有利的故障模式和应力分布模式.
- PEEK后核心系统是传统玻璃纤维柱子,特别是磨 PEEK 的可行替代品.
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