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Related Experiment Videos

Yeasts in periodontal pockets.

A H Reynaud1, B Nygaard-Østby, G K Bøygard

  • 1Department of Periodontology, Institute of Clinical Dentistry and Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway.

Journal of Clinical Periodontology
|August 9, 2001
PubMed
Summary
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Yeasts are present in periodontal pockets of about 1 in 6 patients, regardless of age or gender. The bacterium Eubacterium saburreum frequently co-occurs with yeasts in these sites.

Area of Science:

  • Oral microbiology
  • Periodontology
  • Mycology

Background:

  • The presence of yeasts in periodontal pockets is infrequently documented.
  • The association between yeasts and common periodontal pathogens remains poorly understood.

Purpose of the Study:

  • To determine the prevalence of yeasts in periodontal pockets.
  • To investigate potential associations between yeast presence, clinical conditions, and co-infecting microorganisms.

Main Methods:

  • Microbiological analysis of samples from 128 subjects with periodontal pockets and 126 patients with untreated periodontal pockets.
  • Cultivation on blood and Sabouraud agar plates.
  • Checkerboard DNA-DNA hybridization for microbial identification.

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Main Results:

  • Yeasts were found in 15.6% and 17.5% of subjects across the two groups.
  • No significant correlation was observed between yeast presence and patient age or gender.
  • A weak correlation (r=0.194, p=0.03) was noted between yeasts and Eubacterium saburreum.

Conclusions:

  • Yeasts are common inhabitants of periodontal pockets, affecting approximately 1 in 6 patients.
  • The presence of yeasts is independent of patient age and gender.
  • Eubacterium saburreum appears to be frequently associated with yeast colonization in periodontal pockets.