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Related Experiment Videos

Relationships between yeasts and primary root-caries lesions

D Beighton1, E Lynch

  • 1Oral Microbiology, RCS Department of Dental Sciences, Faculty of Clinical Dentistry, Kings College School of Medicine and Dentistry, London, UK.

Gerodontology
|December 1, 1993
PubMed
Summary

Yeasts were more frequently found in severe root caries lesions requiring restoration. While associated with disease severity, low yeast numbers suggest they act as markers, not primary causes of root decay.

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Area of Science:

  • Dentistry
  • Oral Microbiology

Background:

  • Root caries is a significant dental issue, particularly in aging populations.
  • The etiological role of yeasts in root caries remains debated.

Purpose of the Study:

  • To investigate the relationship between the clinical severity of primary root caries lesions and the presence of yeasts.
  • To determine if yeasts play a pathogenic role in root caries development.

Main Methods:

  • Analysis of 447 primary root caries lesions from 169 dental patients.
  • Quantification and frequency of yeast isolation from lesions.
  • Correlation of yeast presence with lesion characteristics (softness, location, need for restoration).

Main Results:

  • Yeasts were more frequently isolated from soft root caries lesions.

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  • Lesions located at the gingival margin showed higher yeast isolation rates.
  • Lesions requiring restoration were associated with increased yeast detection.
  • Low overall yeast numbers were observed across all lesion types.

    • Conclusions:

    • Yeasts are associated with more severe root caries lesions.
    • Their aciduric and acidogenic potential may contribute to lesion progression.
    • Low yeast prevalence suggests they are likely markers of severe disease rather than primary etiological agents.