CF-PEEK与钛牙种植体:不同骨质量的应力分布和疲劳性能。

IF 3.9 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY
Nurdan Polat Sağsöz, Fahri Murat, Sema Nur Sevinç Gül, Abdullah Tahir Şensoy, Irfan Kaymaz
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引用次数: 0

摘要

本研究旨在利用有限元分析(FEA)评估钛和碳纤维增强聚醚醚酮(CF-PEEK)牙种植体在不同骨密度和载荷条件下的生物力学行为。建立单牙下颌磨牙种植系统模型,包括钛或CF-PEEK基台和固定装置,以及周围四种结构的骨结构:(I)全皮质骨,(II) 2mm皮质层与小梁骨,(III) 1mm皮质层与高密度小梁骨,(IV) 1mm皮质层与低密度小梁骨。施加100 N的垂直和倾斜静载荷模拟咀嚼力。结果表明,在倾斜载荷作用下,钛种植体在种植体和基牙中表现出较高的von Mises应力值,超过400 MPa,而CF-PEEK材料的应力值较小,但应变水平明显较高。CF-PEEK植入物周围的皮质骨和小梁骨的应力分布更均匀,潜在地减少了应力屏蔽作用。然而,疲劳寿命分析表明,CF-PEEK基台和螺钉组件在倾斜载荷下更容易发生机械失效,特别是在低密度骨模型中。总之,与钛相比,CF-PEEK植入物提供了更多的生理负荷转移到骨骼,减少了应力屏蔽。然而,它们在复杂载荷下的结构可靠性,特别是在低质量骨条件下,需要仔细考虑。这些发现支持了CF-PEEK在特定临床场景中的潜在应用,但强调了进一步材料和设计优化的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

CF-PEEK vs. Titanium Dental Implants: Stress Distribution and Fatigue Performance in Variable Bone Qualities.

CF-PEEK vs. Titanium Dental Implants: Stress Distribution and Fatigue Performance in Variable Bone Qualities.

CF-PEEK vs. Titanium Dental Implants: Stress Distribution and Fatigue Performance in Variable Bone Qualities.

CF-PEEK vs. Titanium Dental Implants: Stress Distribution and Fatigue Performance in Variable Bone Qualities.

This study aims to evaluate the biomechanical behavior of titanium and carbon fiber-reinforced polyetheretherketone (CF-PEEK) dental implants under varying bone densities and loading conditions using finite element analysis (FEA). A single-tooth mandibular molar implant system was modeled, comprising titanium or CF-PEEK abutment and fixture, and surrounding bone structures with four configurations: (I) fully cortical bone, (II) 2 mm cortical layer with trabecular bone, (III) 1 mm cortical with high-density trabecular bone, and (IV) 1 mm cortical with low-density trabecular bone. Vertical and oblique static loads of 100 N were applied to simulate masticatory forces. FEA results revealed that titanium implants exhibited higher von Mises stress values in the implant and abutment under oblique loading, exceeding 400 MPa, while CF-PEEK components showed reduced stress but significantly higher strain levels. Cortical and trabecular bone surrounding CF-PEEK implants received more uniform stress distribution, potentially minimizing stress shielding effects. However, fatigue life analyses indicated that CF-PEEK abutment and screw components were more susceptible to mechanical failure under oblique loads, particularly in low-density bone models. In conclusion, CF-PEEK implants offer a more physiological load transfer to bone and reduced stress shielding compared to titanium. However, their structural reliability under complex loading, especially in low-quality bone conditions, requires careful consideration. These findings support the potential use of CF-PEEK in select clinical scenarios but highlight the need for further material and design optimization.

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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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