PEEK安装插件的老化对植入物保留过长的拉力的影响 - - 一项实验室研究
Andreas Koenig1, Laura Rotenburg1, Florian Fuchs1
1Department of Prosthodontics and Material Sciences, Leipzig University, Leipzig, Germany.
Clinical oral implants research
|September 11, 2023
概括
化学清洁剂显著降低了用于植入物保留过度牙 (IOD) 的聚乙烯 (PEEK) 插件的保留力. 机械应力进一步加快了这种下降,表明PEEK在IOD应用中的潜在长期性能问题.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料科学 牙科材料科学
- 机械工程 机械工程
背景情况:
- 聚乙烯 (PEEK) 由于其有利的特性,越来越多地用于植入式保留过度开关 (IOD) 组件.
- 在临床条件下,PEEK插件的长期性能和耐用性,特别是关于保持力,需要进行彻底的研究.
- 了解常见的口腔卫生实践的影响,例如使用清洁剂,对于预测IOD寿命至关重要.
研究的目的:
- 评估机械应力和化学清洁剂对IOD PEEK插件的保持力的影响.
- 为了比较暴露于不同清洁溶液的PEEK插件的降解与非矿物化水的降解.
- 确定PEEK IOD组件中保持力损失背后的潜在机制.
主要方法:
- 三种类型的PEEK插件使用化学牙刷清洁剂 (乙酸,酸盐,泡清洁剂) 和非矿物水进行了人工老化.
- 预先老化的插件经历了模拟的负荷 (200,000 个周期),热循环 (5,000 个周期) 和移除/插入循环 (1,100 个周期).
- 测量了保留力,并使用共聚焦激光扫描显微镜分析了插入表面.
主要成果:
- 所有PEEK插件在机械负荷和暴露于清洁剂后,保持力显著下降.
- 与存储在水中的PEEK插件相比,暴露在化学清洁剂中的PEEK插件在保留力中表现出更大的减少.
- 显微镜分析表明,内部插件表面的磨损导致了观察到的保持力下降.
结论:
- 化学清洁剂加快了PEEK装备内射器的保留插件中保持力的降解.
- 机械负荷加剧了PEEK插件的保持力损失,特别是在暴露于清洁剂后.
- 这些发现凸显了在IOD应用中使用PEEK时考虑清洁剂兼容性和机械磨损的重要性.
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