Periodontics · single question
Which bacteria are NOT typically associated with periodontal disease?
Show answer and explanation
Correct answer: A. Gram-positive aerobes
- A. Correct. Established periodontal pathogens are predominantly gram-negative anaerobes; gram-positive aerobes typify healthy/early plaque, not destructive disease.
- B. Gram-negative anaerobes (e.g., P. gingivalis, T. forsythia) are hallmark periodontal pathogens.
- C. Spirochetes (e.g., Treponema) increase in periodontal pockets and NUG.
- D. Motile rods rise with disease progression in subgingival plaque.