#10 Microbiology of periodontal disease

Question 1

A deficiency of what will result in periodontitis? Why?

Answer 1

Neutrophils.

Neutrophils are the primary defense against periodontitis and the pathogens that cause it in the sulcus

Question 2

What happens when tissue invasive bacteria invade the tissue?

Answer 2

Inflammation results
If invasion is deep or close too the bone osteoclastic activity will be prolonged and osteoblastic activity will be blocked

Question 3

T/F both gram negative and gram positive bacteria contribute to diseases and have been found in the periodontal pocket?

Answer 3

True

Question 4

Supra-gingival bacteria are sacchrolytic while sub-gingival bacteria are ________.

Answer 4

Proteolytic

Question 5

What are some difficulties in identifying periodontal pathogens?

Answer 5

Identifying the organisms
Where to sample from?
Finding healthy controls
There are complex interactions among bacteria

Question 6

What 3 species are part of the “red complex?” What is the red complex?

Answer 6

P. gingivalis
Tanerella forsythia
Treponema denticola
The red complex is a group of bacteria that are consistently found in chronic disease studies

Question 7

What species of bacteria is most associated with localized aggressive periodontitis (LAP)?

Answer 7

A. a.

Aggregatibacter actinomycetemcomitans

Question 8

This lecture was pretty short.

Answer 8

That is truly excellent.