OST Exam 1: Bugs associated with periodontal disease

Question 1

Most periodontitis is associated with 5 main bugs. What are the five?

Answer 1

1. Prevotella intermedia (P.i.)
2. Porphyromonas gingivalis (P.g.)
3. Tannerella forsythia (T.f.)
4. Aggregatibacter actinomycetemcomitans (A.a.)
5. Treponema denticola (T.d.)

(P2TAT)

—- Remember that they’re all Gram (-) anaerobic bugs.

Question 2

List all the bugs associated with Chronic Periodontitis:

Answer 2

●	P. gingivalis (Most important)
●	T. forsythia 
●	A. actinomycetemcomitans 
●	P. intermedia
●	C. rectus
●	Treponema sp.
●	E. corrodens
●	F. nucleatum
●	P. micros
●	Eubacterium sp.

Question 3

List the two main bugs associated with aggressive periodontitis:
-Which one is the main bug?

Answer 3

Aggressive Periodontitis:
● A. actinomycetemcomitans = #1 BUG
● P. gingivalis (some patients)

Question 4

List the three bugs associated with necrotizing Periodontal diseases

Answer 4

-Necrotizing Periodontal diseases
● P. intermedia
● Spirochetes
● Fusiform bacilli

Question 5

List the type of bug associated with NUG?

Answer 5

Spirochetes