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Discussion

Vincent’s angina is a fusospirochaetal lesion caused by

  • A.Actinomyces israelii alone
  • B.Fusobacterium together with Borrelia vincentii
  • C.Nocardia asteroides together with Candida
  • D.Veillonella alone

Answer: C

Correct answer: Fusobacterium together with Borrelia vincentii

Vincent’s angina, or acute ulcerative gingivostomatitis, is a synergistic infection of two organisms already present in the mouth: the fusiform bacillus Fusobacterium and the spirochaete Borrelia vincentii. A Gram or dilute carbol fuchsin film of the ulcer showing both together is diagnostic, and the condition responds to penicillin or metronidazole. It appears where oral hygiene is poor or resistance is lowered, and neither organism produces the lesion alone - hence the term fusospirochaetal.

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