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Related Experiment Videos

Correlation between thermal sensitivity and microorganisms isolated from deep carious dentin

C L Hahn1, W A Falkler, G E Minah

  • 1Department of Endodontics, Medical College of Virginia School of Dentistry, Richmond.

Journal of Endodontics
|January 1, 1993
PubMed
Summary

Dental caries microbial composition impacts thermal pain perception. Lower lactobacilli counts correlate with prolonged pain from cold and heat stimuli in deep carious lesions.

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Area of Science:

  • Microbiology
  • Dental Research
  • Oral Health

Background:

  • Deep carious lesions harbor diverse microbial communities.
  • Thermal sensitivity is a common symptom associated with dental caries.
  • The specific microbial players influencing thermal pain perception remain incompletely understood.

Purpose of the Study:

  • To investigate the correlation between specific microorganisms in deep carious lesions and thermal sensitivity.
  • To determine which bacterial groups are associated with prolonged or short-duration pain responses to thermal stimuli.

Main Methods:

  • Microbiological analysis of 29 deep carious lesions.
  • Assessment of thermal sensitivity (cold and heat) and pain duration.
  • Correlation analysis between microbial counts/presence and thermal sensitivity parameters.

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Main Results:

  • Lactobacilli and total Gram-positive rods showed a negative correlation with pain duration.
  • Gram-positive cocci and non-black-pigmented Bacteroides were positively associated with both cold and heat sensitivity.
  • Specific bacteria like Streptococcus mutans and Fusobacterium nucleatum were linked to heightened thermal sensitivity.

Conclusions:

  • Microbial composition significantly influences thermal sensitivity in deep carious lesions.
  • Lower lactobacilli levels are associated with longer thermal pain duration.
  • Certain bacterial species may contribute to increased pain perception in response to thermal stimuli.