Journal
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE
Volume 69, Issue 1, Pages 12-20Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.diagmicrobio.2010.08.017
Keywords
Periodontopathogenic bacteria; Real-time PCR; DNA-strip technology
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Funding
- Hain Lifescience, Nehren, Germany
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The impact of a semiquantitative commercially available test based on DNA-strip technology (microlDent (R), Hain Lifescience, Nehren, Germany) on diagnosis and treatment of severe chronic periodontitis of 25 periodontitis patients was evaluated in comparison with a quantitative in-house real-time PCR. Subgingival plaque samples were collected at baseline as well as at 3, 6, and 12 months later. After extracting DNA, Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, and several other periodontopathogens were determined by both methods. The results obtained by DNA-strip technology were analyzed semiquantitatively and additionally quantitatively by densitometry. The results for the 4 major periodontopathogenic bacterial species correlated significantly between the 2 methods. Samples detecting a high bacterial load by one method and negative by the other were always found in less than 2% of the total samples. Both technologies showed the impact of treatment on microflora. Especially the semiquantitative DNA-strip technology clearly analyzed the different loads of periodontopathogens after therapy and is useful in microbial diagnostics for patients in dental practices. (C) 2011 Elsevier Inc. All rights reserved.
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