螺丝涂层作为解决螺丝松动并发症的解决方案:一个体外研究
Lara Coelho1,2, Maria-Cristina Manzanares-Céspedes1,2, Joana Mendes1
1Oral Pathology and Rehabilitation Research Unit (UNIPRO), University Institute of Health Sciences (IUCS), CESPU, 4585-116 Gandra, Portugal.
Materials (Basel, Switzerland)
|June 27, 2025
概括
牙科螺丝上的聚四乙烯 (PTFE) 带减少了最初的拉紧力,但在循环负荷下显著增加了对松动的抵抗力. 这种方法可以帮助防止口腔环境中的螺丝松动.
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
- 机械工程 机械工程
背景情况:
- 牙螺丝松动是一种常见的并发症.
- 防止螺丝松动对于植入成功至关重要.
- 螺丝涂层可以提高机械稳定性.
研究的目的:
- 评估螺丝涂层对预装载和卸载扭矩值 (RTV) 的影响.
- 为了评估螺丝的稳定性和没有循环负荷 (CL).
- 为了确定涂层是否提高了解紧阻力.
主要方法:
- 在循环负荷 (CL) 和非CL条件下测试了90个植入物-支架-螺丝复合体.
- 小组包括对照组,GapSeal涂层和PTFE带包裹的螺丝.
- 测量了预加载和RTV;进行了微CT和SEM分析.
主要成果:
- PTFE带 (PG) 的预负荷明显低于对照组 (CG) 和GapSeal (GG) 组.
- 在非CL条件下,PG的RTV显著较低.
- 在CL下,PG与CG和GG相比显示出明显更高的RTV.
结论:
- PTFE带包装显著减少了螺丝的预装量.
- 在循环负荷下,PTFE带显著增加了移除扭矩值.
- PTFE带可能提供一种可行的解决方案,以减轻牙科植入物中螺丝松动的情况.
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