Etiology Flashcards Preview

Perio I > Etiology > Flashcards

Flashcards in Etiology Deck (49)
Loading flashcards...
1

What are the two basic forms of periodontal disease?

Gingivitis
Periodontitis

2

Reversible, inflammation confined to the gingival tissues is called?

Gingivitis

3

Inflammation that is not confined to gingiva and involves attachment apparatus is called?

Periodontitis

4

What three general factors contribute to periodontal disease?

Microbial plaque
Genetics
Acquired/environmental factors

5

Where do most things that enter the free gingival sulcus come through?

Junctional epithelium

6

How much time without hygiene is needed to see the onset of gingivitis?

10-21 days

7

With hygiene how quickly can gingivitis resolve?

1 week

8

What are the main 5 microbes in plaque?

Bacteria
Fungus
Protozoa
Virus
Mycoplasm

9

What does calculus provide for plaque?

Attachment surface

10

What is quorum sensing in a biofilm?

Microbes sensing how many other microbes are in the biofilm

11

What do early biofilm colonizers recognize?

Glycoproteins on the surface of the tooth

12

Which 3 bacteria are in the red complex?

-porphyromonas gingivalis (G-, non motile)
-tannerella forsynthesis (G-, non motile)
-treponema denticola

13

What makes the acquired Pelicle on teeth?

Glycoproteins in saliva

14

What are the 6 common infection types in the oral cavity?

-caries
-periapical lesions
-fungal
-viral
-abcesses
-periodontal

15

Where does the majority of dental and periodontal disease originate?

in the inter proximal area

16

What is a virulence factor?

Property that enables the bacterium to cause disease

17

what is the purpose of Fimbrea, Pili and fibrillae?

Bacterial attachment, prevention of phagocytosis

18

What is the purpose of a capsule?

Protection, attachment, prevention of phagocytosis

19

Where does endotoxin come from?

Gram negative bacteria when they die. It is a lipopolysaccharide which makes it hard to break down

20

What results from the presence of endotoxin?

activation of inflammatory response, cytokine production and bone resorption

21

Roughly how long does it take for pathogenic flora to develop?

42 days

22

why do bacteria try to attach to the tooth/pelicle?

to avoid being flushed out by the positive pressure created by gingival crevicular fluid

23

How is virulence factor defined?

ability to adhere

24

What two ways can bacteria enter the host?

-ulcerations in the epithelium
-direct penetration in the host tissue (less common)

25

What is the formula for periodontal disease?

Pathogenic flora+ Lack of beneficial bacteria+susceptible host= Periodontal disease

26

What are 7 common periodontal pathogens?

1-Aggregatibacter actinomycetemcomitans (AA)
2- Porphyromonas gingivalis
3- Prevotella intermedia
4- Tannerella forsythia
5- Fusobacterium nucleatum
6-Peptostreptococcus micros
7-campylobacter rectus

27

What are 5 examples of beneficial oral bacteria?

1-Actinomyces spp.
2-Strep mitis
3- Strep sanguis
4- Capnocytophaga spp.
5- V. Parvula

28

What are 7 common ways for a host to be more susceptible?

1-Impaired neutrophils
2-inadequate immune response
3-LPS responsiveness
4-AIDS
5-Diabetes
6-Smoking
7-Drugs

29

Define Pellicle formation

A thin, Bacteria-free layer of salivary proteins attached to the tooth surface within minutes of a professional cleaning

30

How quickly does attachment of bacteria occur after a cleaning?

Within hours