纤维增强聚醚醚酮种植体在四类颌骨中的应力分析
Stress analysis of fiber-reinforced polyetheretherketone dental implants in four types of jawbone
田悦 1谢伟丽1
作者信息
- 1. 哈尔滨医科大学附属第一医院 口腔修复科,黑龙江哈尔滨 150001
- 折叠
摘要
目的 研究不同颌骨类型下碳纤维增强的聚醚醚酮(carbon fiber-reinforced polyetheretherke-tone,CFR-PEEK)和玻璃纤维增强的聚醚醚酮(glass fiber-reinforced polyetheretherketone,GFR-PEEK)材料的种植体在口腔的应力.方法 使用软件建模得到上前牙牙冠、骨块、种植体、螺丝和基台模型,进行装配后得到四类颌骨种植体模型.分别导入软件中进行力学分析,通过三维有限元分析方法,斜向加载100 N的力并记录皮质骨、松质骨、种植体的最大等效应力值.结果 等效应力值对比显示CFR-PEEK、GFR-PEEK作为种植体与传统的钛材质在Ⅰ、Ⅲ、Ⅳ类骨中应力超过拉伸压缩极限,Ⅱ类骨所受应力更佳.结论 CFR-PEEK、GFR-PEEK材料种植体适合应用于Ⅱ类骨中.在其他骨质条件下应力过载,PEEK基复合材料需要进一步改性.
Abstract
Objective To study the stress of implants composed of carbon fiber-reinforced polyetheretherketone(CFR-PEEK)or glass fiber-reinforced polyetheretherketone(GFR-PEEK)for oral implantation in different jawbone type.Methods Each part model was obtained by software,including the upper anterior crowns,maxillary bone block,implants,screws and a-butments models.The above structures were accurately assembled to acquire four types of jaw-bone implant models.After being imported into software,the models were loaded on oblique forces of 100 N for mechanical analysis by three-dimensional finite element analysis.The von mises stress of cortical bone,cancellous bone and implants were recorded.Results The com-parison of von mises stress showed that compared with conventional titanium,CFR-PEEK and GFR-PEEK as implants were stressed beyond ultimate tensile and compressive strength in ClassⅠ,Ⅲ and Ⅳ peak jawsbone,whereas in Class Ⅱ jawsbone were better stressed.Conclusion In comparison with traditional implants,the fiber-reinforced polyetheretherketone dental im-plants were indication for class Ⅱ bone.Furthermore,due to overloaded stress in other types of bone condition,the strength of PEEK-based composite material is in demand of further modifi-cation.
关键词
种植体/碳纤维增强聚醚醚酮/玻璃纤维增强聚醚醚酮/骨密度/有限元分析Key words
implant/carbon fiber-reinforced polyetheretherketone/glass fiber-reinforced poly-etheretherketone/bone quality/finite element analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据