Practice Test Questions

Question 1

There is a periodontal pocket present with 5 mm of attacment loss. Probe depth is 4 mm. Where is the gingival margin?

Answer 1

1 mm apical to CEJ

Question 2

What bacteria are regularly associated with localized aggressive periodontitis?

Answer 2

A.a

Question 3

Which of the following is an early colonizer?

1) C. rectus
2) P. gingivalis
3) S. sanguins
4) T. denticola
5) A.a

Answer 3

S. sanguins

Question 4

What is an example of passive defensive mechanism?

Answer 4

Shedding of epithelium

Question 5

What is not a virulence factor of P. gingivalis?

1) Hemolytic
2) Asaccharolytic
3) Spore Forming
4) Nomotile

Answer 5

Spore forming

Question 6

Which is an amino acid secreted only by bacteria?

Answer 6

fMet-Leu-Phe

Question 7

Cytokines are low molecular weight?

Answer 7

Proteins

Question 8

Which is part of the oxidative response to PMNs?

Answer 8

Myeloperoxidase

Question 9

Which is characteristic of non-specific plaque hypothesis?

Answer 9

Plaque removal required for periodontal health

Question 10

Which is the specific response where antibodies are produced?

Answer 10

Adaptive/ acquired immnity

Question 11

Supporting structures of teeth originate from?

Answer 11

Dental follicle

Question 12

What is the purpose of circular gingival fibers?

Answer 12

Support free gingiva

Question 13

What is a key occurance in an early lesion?

Answer 13

Basal cells of JE and SE proliferate

Question 14

Junctional epithelium is made by…?

Answer 14

Reduced dental epithelium and oral epithelium

Question 15

What is a characteristic of the transition from an established to an advanced lesion?

Answer 15

Apical migration of JE (not bone loss)

Question 16

What is characteristic of the transition from early to established lesion?

Answer 16

Pocket epithelium

Question 17

What does complement not do?

Answer 17

Prevent epithelial destruction

Question 18

What are gingipains?

Answer 18

Cysteine proteinases

Question 19

All of the following provide support for the relationship between genetics and periodontitis except:

Answer 19

Bacterial genome

Question 20

IL-8 stimulates_____;a key response in______

Answer 20

PMN chemotaxis; acute inflammation

Question 21

Which is not a characteristic of gram-positive bacteria?

Answer 21

Lipopolysaccharide

Question 22

1) Supragingival calculus is found opposite salivary ducts

2) Needs to be removed for its plaque-retentive nature.

Answer 22

Both true

Question 23

A.a and P. gingivalis ability to invade epithelial cells is an example of:

Answer 23

Evasion of host defenses

Question 24

Which cytokine is secreted by TH2?

1) IL-1
2) IL-4
3) IL-8
4) Interferon

Answer 24

IL-4

Question 25

Which of the following is incorrect about defensins?

1) They can’t distinguish between commensal and pathogenic bacteria
2) They are secreted by both immune cells and non-immune cells
3) They are proteins
4) They use pattern recognition to distinguish commensal and pathogenic bacteria

Answer 25

They use pattern recognition to distinguish commensal and pathogenic bacteria

Question 26

ICAMs are expressed by:

Answer 26

Endothelial cells

Question 27

1) Diabetes causes an increase in the incidence of disease related bacteria.
2) Diabetes causes an increase in collagen synthesis and a decrease in collagen breakdown.

Answer 27

First statement true

Second statement false