The study on the microbiologic analysis of teeth with failed endodontic treatment
- VernacularTitle:根管治疗失败病例根管内微生物分析
- Author:
Ping WANG
- Publication Type:Journal Article
- Keywords:
Endodontic treatment;
Fail;
Microorganism
- From:
Journal of Chongqing Medical University
2007;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To determine the composition of the microbial flora present in teeth after the failure of root canal therapy,to provide bacteriological basis for curing infected root canals with sensitive drug. Methods:86 root-filled teeth with persistent periapical radiolucencies were selected for retreatment. After removal of the root-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 root 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.
