Thimmappa Meenakshi, Bj Greeshma, B Neeraja, Paul Ruchira, Movva Prathyusha, Tr Krishnaprasad
Prosthodontics and Crown and Bridge, The Oxford Dental College, Bengaluru, IND.
Prosthodontics and Crown and Bridge, Pacific Dental College and Hospital, Udaipur, IND.
Cureus. 2025 Aug 25;17(8):e90953. doi: 10.7759/cureus.90953. eCollection 2025 Aug.
This study aimed to assess the biomechanical performance of polyether ether ketone implants in their unmodified form and composite forms reinforced with carbon fibers, glass fibers, hydroxyapatite, and strontium-hydroxyapatite, using finite element analysis across both low- and high-density bone conditions.
By using a three-dimensional computer-aided design software (SolidWorks, SolidWorks Corp., Waltham, Massachusetts, United States), finite element models of both unmodified and composite polyether ether ketone implants were developed for low and high bone densities. These models were analyzed using the ANSYS 8.0 simulation platform (Ansys, Inc., Canonsburg, Pennsylvania, United States) under vertical, oblique, and combined loading conditions, applying a force of 100 newtons. Stress and deformation levels were assessed using the von Mises stress criteria.
The unmodified polyether ether ketone implant showed the highest stress and deformation, whereas the carbon fiber-reinforced implant showed the lowest. Stress was more pronounced in low-density bone. All implants concentrated stress in the cervical region. For the unmodified implant, stress values were 34.59, 48.8, and 82.9 megapascals under vertical, oblique, and combined loads, respectively. In comparison, the carbon fiber-reinforced implant showed values of 28.53, 44.88, and 70.95 megapascals under the same conditions.
The carbon fiber-reinforced polyether ether ketone implant demonstrated the most favorable biomechanical characteristics, suggesting its potential for effective clinical use, especially across varying bone densities.
本研究旨在通过有限元分析，评估聚醚醚酮植入物在未改性形式以及用碳纤维、玻璃纤维、羟基磷灰石和锶羟基磷灰石增强的复合形式下，在低密度和高密度骨条件下的生物力学性能。
使用三维计算机辅助设计软件（SolidWorks，SolidWorks公司，美国马萨诸塞州沃尔瑟姆），针对低密度和高密度骨开发了未改性和复合聚醚醚酮植入物的有限元模型。这些模型在垂直、倾斜和组合加载条件下，使用ANSYS 8.0模拟平台（Ansys公司，美国宾夕法尼亚州卡农斯堡）进行分析，施加100牛顿的力。使用冯·米塞斯应力准则评估应力和变形水平。
未改性的聚醚醚酮植入物显示出最高的应力和变形，而碳纤维增强植入物显示出最低的应力和变形。在低密度骨中应力更为明显。所有植入物在颈部区域集中应力。对于未改性植入物，在垂直、倾斜和组合载荷下的应力值分别为34.59、48.8和82.9兆帕斯卡。相比之下，碳纤维增强植入物在相同条件下的应力值分别为28.53、44.88和70.95兆帕斯卡。
碳纤维增强的聚醚醚酮植入物表现出最有利的生物力学特性，表明其在临床有效应用的潜力，特别是在不同骨密度情况下。
