在感染根管模型中,不同辐射剂量的体外抗菌膜效应
Amin Shiri Ashtiani1, Zahra Jafari2, Nasim Chiniforush3
1Endodontist, Tehran, Iran.
Photodiagnosis and photodynamic therapy
|March 18, 2024
概括
优化光功率密度可以提高抗微生物光动力疗法 (PDT) 对根管中的Enterococcus faecalis生物膜的有效性. 较高的功率密度 (1592 W/cm2) 与氨酸蓝色O或植物被证明更有效地消除生物膜.
科学领域:
- 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
- 生物医学工程 生物医学工程
背景情况:
- 根管生物膜的根除仍然是内牙治疗中的一个重大挑战.
- 抗微生物光动力学疗法 (PDT) 提供了一种有前途的方法来治疗感染的根通道.
- Enterococcus faecalis 是一种常见的病原体,在持续的内牙感染中发现.
研究的目的:
- 为了研究光功率密度在PDT使用氨酸蓝色O (TBO) 和植物 (PC) 对抗Enterococcus faecalis生物膜的疗效中的作用.
- 在根管模型中用635nm二极管激光器确定PDT激活的最佳功率密度.
主要方法:
- 在根管模型中建立了Enterococcus faecalis生物膜.
- 生物膜被用TBO和PC处理,通过635nm二极管激光激活,功率密度不同 (636,954,1273和1592W/cm2).
- 用每毫升的殖民地数量量化细菌减少,将治疗组与未经治疗的对照组进行比较.
主要成果:
- 与636 W/cm2 (p = 0.00) 相比,1592 W/cm2的更高功率密度在减少E. faecalis生物膜方面表现出显著更大的有效性.
- 当在最佳功率密度下激活时,TBO和PC都显示出增强的抗菌作用.
- 该研究证实了光功率密度和PDT疗效之间的剂量依赖关系.
结论:
- 优化的光功率密度是通过PDT增强通过E. faecalis生物膜的细菌减少的关键因素.
- 这些发现为PDT在治疗内生物膜的有效临床应用提供了关键参数.
- 这项研究强调了PDT作为治疗内牙感染的辅助疗法的潜力.
关键词:
生物膜是一种生物膜.菌 (Enterococcus faecalis) 是一种菌.辐射剂量 辐射剂量光动力学疗法是一种光动力学疗法.菲科亚尼尼的成分是什么?功率密度 的功率密度.根管道是一种根管道.更多相关视频
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