INBDE (Integrated National Board Dental Examination) Practice Exam

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Which bacteria are associated with ANUG?

  1. P.intermedia, fusobacterium, spirochetes

  2. E.coli, Salmonella, Shigella

  3. Staphylococcus aureus, Streptococcus pyogenes

  4. Mycobacterium tuberculosis, Legionella pneumophila

The correct answer is: P.intermedia, fusobacterium, spirochetes

ANUG, or Acute Necrotizing Ulcerative Gingivitis, is a severe gum infection caused by a combination of P.intermedia, fusobacterium, and spirochetes bacteria. The other options all contain bacteria that are not typically associated with ANUG. E.coli, Salmonella, and Shigella are usually found in the gastrointestinal tract and can cause diarrhea and other digestive issues. Staphylococcus aureus and Streptococcus pyogenes are commonly found on the skin and can cause skin infections, but are not associated with ANUG. Mycobacterium tuberculosis and Legionella pneumophila are responsible for tuberculosis and Legionnaires' disease respectively, which are both respiratory diseases and do not typically affect the gums. Therefore, option A is the only correct answer as it contains all three bacteria associated with ANUG.

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