结合过氧化溶液的铜基形状记忆合金线的抗菌性质用于内牙治疗
Samantha Souvignet1, Jérôme F L Duval2, Guillaume Grosjean2
1Université de Lorraine, CNRS, LIEC, F-57000 Metz, France.
Journal of applied microbiology
|January 21, 2026
概括
富含铜的形状记忆合金 (Cu-SMAs) 与过氧化和酸 (AA) 有效地杀死根通道中的Enterococcus faecalis. 这种组合产生了反应性物种和对流,用于深层生物膜的根除.
科学领域:
- 生物材料科学 生物材料科学
- 牙周内科医院 牙周内科医院 牙周内科医院
- 微生物学 微生物学
背景情况:
- 富含铜的形状记忆合金 (Cu-SMAs) 为内牙应用提供独特的机械和催化性能.
- 根管感染中Enterococcus faecalis是一种持久性病原体,需要有效的治疗策略.
研究的目的:
- 评估CuAlBe和CuAlNi电线与含有H2O2的溶液相结合的杀菌效果,以对抗Enterococcus faecalis.
- 评估这些组合对浮游生物细菌和生物膜的有效性.
主要方法:
- 使用浮游生物细胞CFU计数评估的杀菌活性.
- 生物膜评估涉及SYTO9 / 酸染色和对焦显微镜对2周老的E. faecalis生物膜.
- 研究了芬顿式反应和气泡产生的对流流的作用.
主要成果:
- 与H2O2和甲酸 (AA) 结合的Cu-SMAs在1分钟内将浮游生物E. faecalis的生存能力降低了6-log10.
- 在15分钟内,CuAlNi/H2O2/AA在线-生物膜接口的生物膜中诱导了细胞透和溶解.
- 由于持续的基质生成和对流流,杀菌效应在空间和时间上扩大.
结论:
- 这种CuAlNi/H2O2/AA组合有效地通过将基因生成与对流相结合来消除生物膜.
- 这种方法使生物膜能够在直接接口之外深入透和破坏.
- Cu-SMAs对开发具有增强细菌杀伤性质的先进内牙档案显示出希望.
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