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Bacteriology

Authoring team

The amassing of dental plaque associated with periodontitis causes an increase in the bacterial flora. There is a shift towards Gram negative rods, anaerobes, spirochaetes and other motile forms of bacteria.

Within periodontal pockets, up to 300 species of bacteria have been identified; aggressive periodontitis has been associated with the following specific organisms:

  • Actinobacillus actinomycetemcomitans
  • Porphyromonas gingivalis
  • Bacteriodes forsythus

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