Home Subscription Services
 
   

 
The Chinese Journal of Dental Research
About the Editor
Editorial Board
Author Guidelines
Submission Form
Reprints / Articles
Permissions
Advertising
MEDLINE Search
Official Site
 
 
 
 
 
FacebookTwitter
Quintessence Publishing: Journals: CJDR

 

The Chinese Journal of Dental Research

Edited by Xu Chen MA

Official journal of the Chinese Stomatological Association

ISSN (print) 1462-6446 • ISSN (online) 1867-5646

Publication:

Fall 2010
Volume 13 , Issue 2

Back
Share Abstract:

Identification of Dominant Pathogens in Periapical Lesions Associated with Persistent Apical Periodontitis

Zhang, Shuang / Wang, Qian Qian / Zhang, Cheng Fei / Soo, Irwan

Pages: 115 - 121

Objective: To identify dominant pathogens in the periapical lesions associated with persistent apical periodontitis. Methods: Thirty-three root-filled teeth with persistent apical periodontitis referred for surgical treatment were selected. Microbial samples were collected from the periapical lesions during apical surgery. Microbial identification was performed with species-specific primers prepared according to the sequence analysis data using a 16S rRNA technique. Results: Among the 33 cases, in 5 cases none of the target species were detected, 6 cases showed the presence of only one species, and 22 cases showed more than two species. Porphyromonas endodontalis (45% of sample) was the most commonly detected dominant microbial species in the study sample, followed by Actinomyces viscosus (42%), Candida albicans (36%) and Porphyromonas gingivalis (27%). Fusobacterium, Actinomyces israelii and Enterococcus faecalis were also detected in 27%, 21% and 15% of the sample, respectively. The most frequently isolated species, P. endodontalis, was in most cases detected together with Actinomyces (14 cases) and P. gingivalis (6 cases). None of the lesions analysed in the present study contained Prevotella intermedia. There was no correlation in relation to the presence of sinus tracts and the bacterial species. Conclusion: A mixed population of pathogens was found in the endodontic lesions associated with persistent apical periodontitis. P. endodontalis, A. viscosus, C. albicans and P. gingivalis were the dominant species identified.

Keywords: bacteria, microbiology, persistent apical periodontitis, 16S rRNA

Full Text PDF File | Order Article

 

 
  © 2014 Quintessence Publishing Co Inc
 

Home | Subscription Services | Books | Journals | Multimedia | Events | Blog
Terms of Use | Privacy Policy | About Us | Contact Us | Advertising | Help | Sitemap | Catalog