Association of black-pigmented bacteria with endodontic infections

J. Craig Baumgartner, Beverly J. Watkins, Kwang Shik Bae, Tian Xia

Research output: Contribution to journalArticle

75 Scopus citations

Abstract

Black-pigmented bacteria (BPB) have been associated with endodontic infections. The purpose of this study was to evaluate further the presence of BPB with the clinical signs and symptoms associated with endodontic infections. Microbial samples were collected from the root canals of 40 intact teeth with necrotic pulps and apical periodontitis. Conventional laboratory methods were used for identification of the strains of BPB isolated in pure culture. In addition, the polymerase chain reaction and specific primers for 16S r-RNA genes were used to differentiate Prevotella nigrescens from Prevotella intermedia. Twenty-two (55%) samples were positive for the growth of BPB. Of those, 11 of 22 (50%) were identified as P. nigrescens, 8 of 22 (36%) were P. intermedia, 2 of 22 (9%) were Porphyromonas gingivalis, and 1 of 22 (5%) was Prevotella melaninogenica. Sixteen of the 22 root canals positive for the growth of BPB were associated with purulent drainage either from the root canal or an associated sinus tract. Statistical analysis did not show a significant relationship for the presence of BPB with clinical signs and symptoms.

Original languageEnglish (US)
Pages (from-to)413-415
Number of pages3
JournalJournal of endodontics
Volume25
Issue number6
DOIs
StatePublished - Jun 1999

ASJC Scopus subject areas

  • Dentistry(all)

Fingerprint Dive into the research topics of 'Association of black-pigmented bacteria with endodontic infections'. Together they form a unique fingerprint.

  • Cite this