仪器动力学和顶端制剂极限是否会影响通道消毒和细菌挤出?
Taynara Santos Goulart1, Maick Meneguzzo Prado2, Giulia Celine Tieppo3
1Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina (UFSC), Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil.
Odontology
|January 1, 2025
概括
使用旋转或反转系统的根管道制备有效地消毒了顶端三分之一. 然而,在角孔外做准备会显著增加细菌挤出,从而危及安全.
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
- 生物材料科学 生物材料科学
背景情况:
- 根管制备旨在消毒根管系统并去除受感染的组织.
- 在根管准备过程中,细菌挤出超出顶孔外的细菌挤出是治疗成功的一个问题.
- 了解仪器动力学和制备限制对细菌挤出的影响对于优化内牙术程序至关重要.
研究的目的:
- 评估仪器动力学 (旋转与反转) 和顶端制备极限对根运河消毒和细菌挤出的影响.
- 为了比较ProDesign S和Reciproc系统在去污染根通道的顶端三分之一的有效性.
- 为了确定最佳的顶端制备极限,以尽量减少细菌挤出.
主要方法:
- 在体外研究中使用72个下牙与诱导的Enterococcus faecalis生物膜.
- 使用ProDesign S (旋转) 或Reciproc (互换) 系统制备的根管道.
- 测试的顶峰准备极限:距离顶峰孔口短1毫米 (TL-1),在顶峰孔口 (TL=0),或在顶峰孔口 (TL+1) 外1毫米.
- 剩余的生物膜通过超声波去除;细菌悬浮和灌液泄漏量化通过殖民地形成单位 (CFU).
主要成果:
- 无论是ProDesign S还是Reciproc系统,都有效地清除了顶端三分之一的污染,而不管顶端的制备限值 (p > 0.05).
- 与其他极限 (p < 0.05) 相比,当制剂延伸1毫米超出顶孔 (TL+1) 时,细菌挤出率显著增加.
- 在旋转和反转系统之间没有观察到细菌挤出的显著差异.
结论:
- 顶峰的第三次净化可以通过旋转和反转系统实现,独立于顶峰的制备限值.
- 在顶孔外准备根通道显著增加了细菌挤出.
- 临床医生应坚持在顶孔内或离顶孔不远的顶制备限制,以尽量减少细菌挤出和潜在的并发症.
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