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Related Experiment Videos

Occlusal hidden caries: a bacteriological profile.

K L Weerheijm1, J J de Soet, J de Graaff

  • 1Department of Pediatric Dentistry, Academic Centre for Dentistry, Amsterdam.

ASDC Journal of Dentistry for Children
|November 1, 1990
PubMed
Summary

Active dental caries lesions beneath intact enamel contain harmful bacteria, even after apparent removal. These hidden occlusal caries are often missed by current survey methods, indicating a need for improved diagnostic criteria.

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Area of Science:

  • Dentistry
  • Microbiology

Background:

  • Occlusal caries lesions can occur beneath seemingly intact enamel.
  • Early detection of these lesions is crucial for effective treatment.

Purpose of the Study:

  • To investigate the presence of bacteria in dentine samples from occlusal caries lesions.
  • To compare salivary data between patients with these lesions and a control group.
  • To assess the detectability of these lesions using current epidemiological criteria.

Main Methods:

  • Collected dentine samples (Sample A and Sample B) from eleven teeth with occlusal caries.
  • Examined samples for mutans streptococci and lactobacilli under aseptic conditions.
  • Compared salivary buffer capacity, bacterial counts, and secretion rates between patient and control groups.

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Main Results:

  • Mutans streptococci and/or lactobacilli were found in all Sample A and most Sample B dentine.
  • Dentine in ten cases was soft and light-colored, indicating active caries.
  • No significant differences in salivary buffer capacity, bacterial counts, or secretion rates were observed between groups, though a relationship between group and buffer capacity was noted.

Conclusions:

  • Occlusal caries lesions beneath intact enamel harbor active bacteria and require appropriate treatment.
  • Current epidemiological survey criteria may fail to detect these hidden occlusal caries lesions.