2002年10月
Participation of bacterial biofilms in refractory and chronic periapical periodontitis
JOURNAL OF ENDODONTICS
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- 巻
- 28
- 号
- 10
- 開始ページ
- 679
- 終了ページ
- 683
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1097/00004770-200210000-00001
- 出版者・発行元
- LIPPINCOTT WILLIAMS & WILKINS
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.
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.
- リンク情報
- ID情報
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- DOI : 10.1097/00004770-200210000-00001
- ISSN : 0099-2399
- PubMed ID : 12398163
- Web of Science ID : WOS:000178551100001