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混合牙科植入物的骨质细胞和细菌反应
Daniel Robles1,2, Aritza Brizuela2, Manuel Fernández-Domínguez3
1Department of Translational Medicine, CEU San Pablo University, Urbanización Montepríncipe, 28925 Madrid, Spain.
Journal of functional biomaterials
|June 27, 2023
概括
牙植入物表面的粗性会影响细菌的粘附和骨细胞的行为. 更粗的表面促进骨质母细胞活动,但也增加细菌生长,对植入物稳定性构成风险.
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
- 表面工程是什么?表面工程是什么?
背景情况:
- 由细菌感染引起的周植入炎导致骨质损失和牙植入物流动性.
- 牙植入物表面地形影响细菌的粘附和宿主细胞的反应.
- 混合牙科植入物具有明显的冠状 (光滑) 和顶端 (粗) 表面区域,以减轻围部植入炎.
研究的目的:
- 进行不同粗度的表面的物理化学表征.
- 评估不同表面的骨质细胞行为 (粘附,增殖,分化).
- 评估微生物对光滑,粗和混合型表面对常见口腔细菌的反应.
主要方法:
- 准备了具有光滑,光滑透光和粗表面的3级盘 (n=180).
- 使用白光干扰计量量测量了表面粗度.
- 湿度和表面能量通过滴技术和欧文斯-温特方程来测量.
- 评估了人类骨质母细胞 (SaOS-2) 的粘附,增殖和分化.
- 微生物学研究涉及与E. faecalis*和S. gordonii*进行化.
主要成果:
- 与光滑表面 (Sa = 0.23 μm) 相比,粗的表面 (Sa = 1.98 μm) 呈现出较高的骨质细胞粘附率 (>32%在6h),增殖和分化.
- 光滑的表面比粗的表面具有更高的表面能量 (41.77 mJ/m2),具有更高的水友性 (接触角度为61.2°).
- 粗的表面显示,E. faecalis和S. gordonii的细菌繁殖明显增加.
结论:
- 粗表面增强骨质母细胞活性,这对于骨固定至关重要.
- 然而,表面粗度增加也促进了细菌的增殖,可能导致围植入炎.
- 混合植入物设计可能会通过减少骨质母细胞在光滑冠状区域的反应来危害骨固定,以防止细菌粘附.
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