根管治疗失败病例根管内微生物分析  

The study on the microbiologic analysis of teeth with failed endodontic treatment

作　　者：王萍[1] 季平[1] 唐明[1] 张伟 罗慧琼[1] 

机构地区：[1]重庆医科大学附属第一医院口腔科,重庆400016 [2]重庆市药品检验所,重庆400015

出　　处：《重庆医科大学学报》2007年第10期1083-1086,共4页Journal of Chongqing Medical University

基　　金：重庆医科大学科技基金资助项目(XB200504)。

摘　　要：目的:通过对根管治疗失败病例根管内微生物进行培养检测,了解失败病例根管内菌群特征,为药敏试验奠定基础,为临床根管治疗提供参考。方法:选择86例根管治疗失败病例共86颗患牙,去除根管内充填物后,对根管内细菌取样,进行培养和鉴定。同时选择25例未经根管治疗的慢性根尖周炎病例共25颗患牙,对根管内细菌标本采样、培养与鉴定,结果:根管治疗失败病例根管中微生物菌群组成以兼性厌氧菌为优势菌,主要以1～2种革兰氏阳性菌为主,粪肠球菌是最常检出的细菌。结论:细菌与根管治疗失败密切相关,根管治疗失败病例根管内微生物组成有其特殊性。Objective：To determine the composition of the microbial flora present in teeth after the failure of mot canal therapy,to provide bacteriological basis for curing infected mot canals with sensitive drug. Methods：86 mot-filled teeth with persistent periapical radiolucencies were selected for retreatment, After removal of the mot-filling material,the canals were sampled with paper points. The samples were grown under aerobic and anaerobic conditions and the bacteria were analyzed. Meanwhile,25 teeth with chronic periapical periodontitis without endodontic treatment were selected. Samples were taken and cultivated. Results：Facultative anaerobes was the most prevalent species isolated from canals of mot filled teeth. The microbial flora was mainly of 1 to 2 strains of predominantly gram-positive organisms. Enterococcus faecalis was the most commonly recovered bacterial species. Conclusion：Bacteria are high correlation with the teeth with failed endodontic treatment. The composition of the microbial flora in teeth with failed endodontic treatment has its own identity.

关 键 词：恨管治疗 失败 细菌 

分 类 号：R781.33[医药卫生—口腔医学] R780.2[医药卫生—临床医学]