Participation of Bacterial Biofilms in Refractory and Chronic Periapical Periodontitis
- 1 October 2002
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Journal of Endodontics
- Vol. 28 (10), 679-683
- https://doi.org/10.1097/00004770-200210000-00001
Abstract
The aim of this study was to examine morphologically the participation of extraradicular biofilm in refractory periapical periodontitis. Six teeth and five extruded root filling gutta-percha points associated with refractory periapical periodontitis were investigated by scanning electron microscope. In nine of 11 samples examined, bacterial biofilms were seen at the extraradicular area. The gutta-percha surface was covered with glycocalyx-like structures, and filaments, long rods, and spirochete-shaped bacteria were predominant in the extraradicular sites. Planktonic cells, which were filaments and spirochete-shaped bacteria, emigrated from the glycocalyx structures in some spots. In the extracted teeth, biofilm consisting of both bacteria and glycocalyx-like structures were observed on the periapical root surfaces. Next to the residual periodontal ligament, a few filaments, rods, and fusiforms were attached on the healthy cementum surface. The present findings suggested that bacterial biofilms formed in the extraradicular areas were related to refractory periapical periodontitis.Keywords
This publication has 12 references indexed in Scilit:
- Identification of Periodontal Disease‐Associated Bacteria in the “Plaque‐Free Zone”The Journal of Periodontology, 2000
- Bacterial Biofilms: A Common Cause of Persistent InfectionsScience, 1999
- MICROBIAL BIOFILMSAnnual Review of Microbiology, 1995
- Histological evaluation of the presence of bacteria in induced periapical lesions in monkeysJournal of Endodontics, 1992
- Microbiological monitoring and results of treatment of extraradicular endodontic infectionDental Traumatology, 1990
- Periapical bacterial plaque in teeth refractory to endodontic treatmentDental Traumatology, 1990
- Extraradicular endodontic infectionsDental Traumatology, 1987
- A scanning and transmission electron microscopic study of an infected endocardial pacemaker lead.Circulation, 1982
- A histopathologic and histobacteriologic study of 35 periapical endodontic surgical specimensJournal of Endodontics, 1977
- A histopathologic, histobacteriologic, and radiographic study of periapical endodontic surgical specimensOral Surgery, Oral Medicine, Oral Pathology, 1976