纳米粒子,复合量子点和连接到牙科合金的丝蛋白质的抗菌作用
Pamir Tor1, Muzaffer Gulyurt2, Gulay Dumanli Gok2
1Private practice, Istanbul, Turkey.
American journal of dentistry
|August 16, 2023
概括
与银纳米颗粒相比,新的添加碳量子点 (B-CQD) 在合金表面上显示出优越的抗菌作用. 这一进步提供了一个有希望的策略,以防止植入物因细菌感染引起的失败.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 表面化学 表面化学
背景情况:
- 合金由于其生物相容性和机械性能,在医疗植入物中被广泛使用.
- 植入物表面上的细菌殖民可能导致感染和植入物失败.
- 开发有效的抗菌表面涂层对于提高植入成功率至关重要.
研究的目的:
- 评估合金 (Ti) 表面上添加碳量子点 (B-CQDs) 的抗菌功效.
- 将B-CQDs的抗菌性能与Ti表面上的银纳米粒子 (AgNPs) 和丝衍生材料 (丝素 (SS) 和水解丝 (HSP)) 进行比较.
主要方法:
- 合金表面被涂上SS/HSP,然后再添加AgNP或B-CQD.
- 使用富里埃变换红外线 (FTIR),扫描电子显微镜 (SEM) 和能量分散式X射线 (EDS) 分析进行了表面表征.
- 使用穆勒-亨顿测试评估了对黄金葡萄球菌和空气菌的抗菌活性.
主要成果:
- 合金和SS/HSP涂层表面没有显著的抗菌活性.
- 银纳米颗粒对阳性和阴性细菌表现出有限的抗菌作用.
- 用添加的碳量子点在Ti-SS表面表现出对S. aureus和P. aeruginosa的优越抗菌活性.
结论:
- 用添加的碳量子点代表了对合金表面的高效抗菌剂.
- 这种使用B-CQD的新方法具有预防植入物相关感染和改善临床结果的巨大潜力.
- 开发B-CQD涂层提供了一个有前途的杀菌策略,以减轻植入器的故障.
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