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Endodontic Microbiology

  • Introduction
  • History
  • Gram +ve and Gram –ve organisms
  • Aerobic and Anaerobic microorganisms
  • Microflora of oral cavity
  • Portals of root canal infection
  • Bacterial pathogenicity
  • Bacterial defence
  • Host response
  • Endodontic microflora
  • Invasion of the pulp cavity by bacteria is most often
  • associated with dental caries. Bacteria invade and multiply
  • within the dentinal tubules .
  •    Dentinal tubules range in size from 1 to 4 µm in diameter,
  • whereas the majority of bacteria are less than 1 µm in
  • diameter. If enamel or cementum is missing, microbes
  • may invade the pulp through the exposed tubules.


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