摘要
目的:评价17%EDTA联合1%次氯酸钠对根管内粪肠球菌的清除效果。方法:将40个离体前牙的感染根管标本随机分为5组,器械预备时分别辅以冲洗液冲洗根管。其中A、B、C组分别用5.25%、2.5%及1%次氯酸钠冲洗,D组用17%EDTA联合1%次氯酸钠冲洗,E组用0.9%NaC l冲洗。冲洗前、后计数根管内的细菌量,并观察72 h细菌复苏情况。结果:5组根管内的细菌量均显著下降(P<0.01),其中D组与A、C组间差异有显著性(P<0.05),与B组间差异无显著性(P>0.05)。结论:17%EDTA联合1%次氯酸钠可有效清除根管内粪肠球菌,其效果优于1%次氯酸钠,与2.5%次氯酸钠相近似。
Objective：To evaluate the antibacterial efficacy of 17%EDTA ＋1% NaOCl on Enterococcus faecalis（Ef）within teeth root canals.Methods：Roots inoculated with E.faecalis were divided into five groups randomly,which were prepared with different root canal irrigation methods.5.25% NAOCl was used for group A,2.5% NaOCl was used for group B,1% NaOCl was used for group C,17%EDTA＋1% NaOCl was used for group D and 0.9%NaCl was used for group E.The concentration of Ef in canals of each group were calculated before and after irrigation,and vitalities of the residual bacteria were also examined.Results：The number of E.faecalis in root canal in each of the five groups were effectively reduced（P〈0.01）.Group D was significantly more effective than group C（P〈0.05）,and showed no significant different compared with group B（P〉0.05）.Conclusion：Root canal preparation combined with 17% EDTA＋1% NaOCl irrigation has potential antibactericial effect on E.faecalis within root canals.The antibacterial efficacy of 17% EDTA＋1% NaOCl was better than 1% NaClO and similar to 2.5% NaClO.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2009年第5期719-721,共3页
Journal of Practical Stomatology
关键词
次氯酸钠
EDTA
粪肠球菌
Sodium hypochlorite
EDTA
Enterococcus faecalis
