M8+9 - periodontitis

Question 1

Are gram -ve bacteria more abundant in supra or sub gingival plaque?

Answer 1

Sub gingival

Question 2

What plaque hypothesis states that there is a single pathogen responsible?

Answer 2

Specific plaque hypothesis

Question 3

What plaque hypothesis states there is no single pathogen responsible?

Answer 3

Non-specific

Question 4

What gram -ve coccobacillus is metronidazole ineffective against?

Answer 4

Aggregatibacter actinomycetemcomitans

Question 5

When would we encounter the red complex?

Answer 5

Active pockets of periodontitis

Question 6

What bacteria are part of the RED COMPLEX?

Answer 6

Porphyromonas gingivalis
Tannerella forsythia
Trepoema denticola

Question 7

What bacteria are part of the ORANGE COMPLEX?

Answer 7

Fusobacterium spp.
Prevotella nigrescins
Prevotella intermedia

Question 8

What do the red and orange complex increase at the expense of?

Answer 8

Actinomyces spp.

Question 9

What type of bacteria are Porphyromonas gingivalis ?

Answer 9

Black pigmented

Question 10

What are 3 therapeutic antimicrobial agents?

Answer 10

chlorhexadine
tetracycline
metronidazole

Question 11

What makes bacteria black pigmented?

Answer 11

complex with iron

Question 12

What type of bacteria are P, gingivalis, P.intermedia, P.nigrescins ?

Answer 12

Black pigmented

Question 13

What are the 3 C’s?

Answer 13

1. community change
2. microbial complexes
3. commensal involvement

Question 14

What is the function of an osteoclast?

Answer 14

removes bone matrix

Question 15

What is produced by the organic matrix of bone and aids calcification?

Answer 15

Osteoblast

Question 16

What stimulates osteoblast apoptosis?

Answer 16

capsular polysaccharide