使用 EndoVac 冲洗与根管注射冲洗在抗菌效果方面的比较。
Comparison of the antimicrobial efficacy of irrigation using the EndoVac to endodontic needle delivery.
出版信息
J Endod. 2010 Mar;36(3):509-11. doi: 10.1016/j.joen.2009.10.008. Epub 2010 Jan 25.
INTRODUCTION
The purpose of this investigation was to compare the antimicrobial efficacy of root canal irrigation with the EndoVac (Discus Dental, Culver City, CA) to endodontic needle irrigation in the apical 5 mm of root canals infected with Enterococcus faecalis.
METHODS
Bilaterally matched, extracted human teeth were sterilized and inoculated with E. faecalis. Specimens in the EndoVac group were irrigated using the EndoVac system, whereas those in the needle group were irrigated with a 30-G side-vented needle. After chemomechanical preparation, the apical 5 mm of the roots were removed, frozen in liquid nitrogen, and pulverized to expose E. faecalis in dentinal tubules or other morphologic irregularities. The number of colony forming units (cfus) of E. faecalis per mg dentin was determined.
RESULTS
The EndoVac Group had a mean of 31.6 cfu/mg, whereas the needle group had a mean of 157 cfu/mg. This represents a bacterial reduction of 99.7% in group A and 98.8% in group B when compared with positive controls.
CONCLUSION
Although there were fewer cfu/mg when using the EndoVac, there was not a statistically significant difference between the EndoVac and needle groups.
简介
本研究旨在比较根管冲洗与 EndoVac（Discus Dental，Culver City，CA）在感染粪肠球菌的根尖 5mm 根管内的抗菌效果。
方法
将双侧匹配的、提取的人类牙齿进行消毒并接种粪肠球菌。EndoVac 组的标本使用 EndoVac 系统冲洗，而针组的标本使用 30-G 侧孔针冲洗。在化学机械预备后，去除根的根尖 5mm，在液氮中冷冻，并粉碎以暴露粪肠球菌在牙本质小管或其他形态不规则处。每毫克牙本质中的粪肠球菌菌落形成单位（cfu）数。
结果
EndoVac 组的平均值为 31.6 cfu/mg，而针组的平均值为 157 cfu/mg。与阳性对照相比，A 组的细菌减少了 99.7%，B 组的细菌减少了 98.8%。
结论
尽管使用 EndoVac 时 cfu/mg 较少，但 EndoVac 组与针组之间没有统计学差异。
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