INBDE (Integrated National Board Dental Examination) Practice Exam

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Actinomycosis is caused by

  1. Actinomyces naeslundii

  2. Actinomyces israelii

  3. Actinomyces odontolyticus

  4. Actinomyces viscosus

The correct answer is: Actinomyces israelii

Actinomycosis is a rare, chronic bacterial infection caused by Actinomyces israelii. Actinomyces naeslundii, Actinomyces odontolyticus, and Actinomyces viscosus are also species of Actinomyces, but they are not the primary causative agent of actinomycosis. Actinomyces israelii is the most common species implicated in causing this infection.

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