评估四种植入体系统的微隙和密封能力,在不同的紧紧扭矩下具有不同的互锁:一个体外研究
Mohammed Assayed Mousa1, Hasna Alshubrmi2, Rakhi Issrani3
1Department Prosthetic Dental Sciences, College of Dentistry, Jouf University, Jouf, Saudia Arabia.
The journal of advanced prosthodontics
|January 13, 2025
概括
牙植入物互锁被评估为微隙宽度和细菌粘附. 全六边形 (FHI) 和八边形终端索引 (OI) 系统显示出最小的微差距,而六边形互锁 (滑合) (HI-SF) 则抵抗了常见的细菌粘附.
科学领域:
- 生物材料科学 生物材料科学
- 牙科植入物学 牙科植入物学
- 微生物学 微生物学
背景情况:
- 牙植入物中的微隙可以容纳细菌,可能导致围植入炎.
- 植入物 - 支架连接的设计影响了微隙形成和细菌泄漏.
- 了解细菌对不同植入系统的粘附性对于长期成功至关重要.
研究的目的:
- 评估四种不同的牙植入物互锁系统的支柱和植入物平台之间的微隙宽度.
- 为了评估三个特定的细菌物种 (黄金杆菌,大肠杆菌和 Pseudomonas aeruginosa) 对这些植入物系统的粘附性.
- 为了确定不同螺丝扭矩对微隙宽度和细菌泄漏的影响.
主要方法:
- 测试了四种具有明显互锁的牙植入系统 (全六边形,三边形索引,带八边形终端索引的摩尔斯缩小器,六边形互锁滑套).
- 支柱被固定在固定装置上,使用10,20,30和40Ncm的螺丝扭矩.
- 使用扫描电子显微镜 (SEM) 分析了microgaps;在30Ncm扭矩下评估了细菌泄漏.
主要成果:
- 三极管指数系统在所有测试的扭矩中表现出最宽的微隙.
- 不同扭矩的系统之间没有发现微隙宽度的显著差异.
- 六角互锁 (滑合) 和八角终端索引系统对大肠杆菌和黄金色杆菌粘附有抗性,而FHI和TLI具有更高的细菌粘附性. P. aeruginosa 坚持所有系统.
结论:
- 所有测试的植入系统都显示了微隙宽度低于可接受的限值,即使在低扭矩下也是如此.
- 全六边形 (FHI) 和八边形终端指数 (OI) 系统显示出最小的不合适 (<2μm在10Ncm,<1μm在更高的扭矩),这表明它们适用于骨质质量差的区域.
- 六角联锁系统有效地抵抗了大肠杆菌和金黄色杆菌的粘附,但P. aeruginosa很容易粘附到所有系统中.
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