Micro & Immunology · single question
How many bacterial species are typically implicated in a periapical abscess?
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Correct answer: A. More than 3 species (polymicrobial)
Periapical lesions are POLYMICROBIAL — involving more than 3 species (typically 4–15+): Fusobacterium, Peptostreptococcus, Prevotella, Porphyromonas, Streptococcus, Actinomyces. Source confirms: 'más de 3.'
- A. CORRECT. More than 3 species — polymicrobial. Broad-spectrum/anaerobic coverage needed. Source: 'más de 3.'
- B. 2 species — still underestimates the complexity.
- C. 3 species — closer but still too few; typically >3 found.
- D. 1 species — apical infections are NOT monomicrobial.
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