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In vitro evaluation of the antibacterial effectiveness of sodium hypochlorite on Enterococcus faecalis within root canals

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF STOMATOLOGY
Issue:
6
DOI:
10.3760/j.issn:1002-0098.2007.06.011
Key Word:
次氯酸钠;根管冲洗剂;肠球菌,粪

Abstract´╝Ü 目的 评价次氯酸钠对根管内粪肠球菌的杀菌效果.方法 将45个离体前磨牙的感染根管标本分为6组,1、2组用5.25%及2.5%次氯酸钠冲洗,3组用0.9%NaCl冲洗,4、5组在根管预备时辅以5.25%及2.5%次氯酸钠冲洗,6组在根管预备时辅以0.9%Nacl冲洗.冲洗前、冲洗后即刻及冲洗后72 h分别取样培养.结果 6组根管内的细菌量均显著下降.1、2组差异无统计学意义(P>0.05),但均好于3组(P<0.05).4、5和6组差异均有统计学意义(P<0.05).根管冲洗后培养72 h均有细菌生长.结论 2.5%次氯酸钠基本可达到更高浓度的灭菌效果,但是经过机械预备和次氯酸钠化学消毒后的根管内仍有细菌残留.

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