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Updated: May 15, 2025

Fabrication and Design of Wood-Based High-Performance Composites
Published on: November 9, 2019
聚乙基及其复合材料的后芯和核心的生物机械性能
Biyao Wang1, Minghao Huang2, Kaige Zhang2
1The VIP Department, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, No.117 North street Nanjing Road, Shenyang, 110002, China.
聚乙基 (PEEK) 和其纤维增强复合材料在后部和核心修复中表现出优越的生物力学性能. 这些材料为修复广泛的牙缺陷提供了有希望的替代方案,减少了诸如根骨折等并发症.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 机械工程 机械工程
背景情况:
- 聚乙基 (PEEK) 和其纤维增强复合材料以其机械性能而闻名,使其适用于后芯应用.
- 有限的实验室证据表明,纤维增强PEEK在后和核心修复中存在.
研究的目的:
- 评估PEEK和纤维增强PEEK材料的生物力学性能,用于后部和核心的修复.
- 为了比较它们的应力分布,静态故障负载和耐疲劳性能与传统材料.
主要方法:
- 120个经过内治疗的前牙被用六种不同的后芯材料恢复:石英纤维增强复合材料 (QFRC),聚合物透陶 (PIC), (CoCr),PEEK,玻璃纤维增强PEEK (GFR-PEEK) 和碳纤维增强PEEK (CFR-PEEK).
- 有限元分析 (FEA) 评估了应力分布.
- 静态和疲劳负荷测试评估了故障负荷和生存概率,使用ANOVA和Kaplan-Meier生存分析进行分析.
主要成果:
- 与 (CoCr) 相比,PEEK及其复合材料 (GFR-PEEK,CFR-PEEK) 显示出更好的应力分布和更低的峰值应力.
- 对于PEEK和QFRC的静态故障负载低于CoCr,GFR-PEEK和CFR-PEEK.
- 虽然CoCr具有最好的初始疲劳生存率,但PEEK及其复合材料接近其生存概率,疲劳周期增加. 在所有组中,除了CoCr.外,可修复的故障模式更常见.
结论:
- 定制的PEEK和纤维增强的PEEK柱和芯具有卓越的生物机械性能,将它们定位为修复广泛牙缺陷的可行替代品.
- 这项研究为临床医生选择基于根运河形态的后核材料提供了基础,潜在地将根骨折和后解等并发症降到最低.
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