Periodontics · single question
Which organism is associated with chronic periodontitis — EXCEPT?
Show answer and explanation
Correct answer: B. Streptococcus mutans
✓ B) Streptococcus mutans is the EXCEPTION.
S. mutans is the primary cariogenic organism — it causes dental caries, not periodontitis. The 'red complex' bacteria of chronic periodontitis: Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola. Other periodontal pathogens: Prevotella intermedia, Fusobacterium nucleatum, Aggregatibacter actinomycetemcomitans (aggressive periodontitis). S. mutans is firmly associated with coronal caries, not periodontal destruction.
S. mutans is the primary cariogenic organism — it causes dental caries, not periodontitis. The 'red complex' bacteria of chronic periodontitis: Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola. Other periodontal pathogens: Prevotella intermedia, Fusobacterium nucleatum, Aggregatibacter actinomycetemcomitans (aggressive periodontitis). S. mutans is firmly associated with coronal caries, not periodontal destruction.