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Rapid chair-side DNA probe assay of Bacteroides forsythus and Porphyromonas gingivalis.

Abstract：

:This study compared a rapid, colorimetric DNA probe assay designed to be performed in a dental office within 40 min, with anaerobic culture and indirect immunofluorescence microscopy (IFM) for detection of Bacteroides forsythus and Porphyromonas gingivalis in subgingival plaque samples. The DNA probe assay used the Periodontal Microbial Identification Test (Saigene Corporation, Bothell, Washington, USA). B. forsythus was detected in 46 (52%), 49 (55%) and 39 (44%) of the samples by DNA probe, culture (at levels > or = 10(5)) and IFM, respectively. P. gingivalis was detected in 24 (27%), 18 (20%) and 29 (33%) of the samples by DNA probe, culture (at levels > or = 10(5)) and IFM, respectively. Results from the DNA probe assay were compared to culture. Culture negative, probe positive samples were re-evaluated by IFM, and IFM positive samples were considered positive in "resolved" data. Using resolved data. DNA probe detection sensitivity and specificity values for B. forsythus were 81% and 91% and for P. gingivalis were 80% and 95%, respectively. DNA probe test results were further compared with culture and IFM. For samples negative by both culture and IFM, probe specificity was 92% in 25 B. forsythus samples and 95% in 57 P. gingivalis samples. For samples positive by both reference methods, probe sensitivity was 82% in 27 B. forsythus samples and 73% in 15 P. gingivalis samples. B. forsythus was detected more frequently by culture compared with IFM; the reverse was observed for P. gingivalis. The rapid DNA probe assay for B. forsythus and P. gingivalis was comparable to cultivable and IF analyses.

journal_name

J Periodontal Res

journal_title

Journal of periodontal research

authors

Tanner AC,Maiden MF,Zambon JJ,Thoren GS,Kent RL Jr

doi

10.1111/j.1600-0765.1998.tb02299.x

subject

Has Abstract

pub_date

1998-02-01 00:00:00

pages

105-17

issue

2

eissn

0022-3484

issn

1600-0765

journal_volume

33

pub_type

杂志文章

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