Deck 6: Periodontal Diseases

Question 1

How many different species of bacteria are estimated to inhabit the oral cavity?

A)100-200
B)100-300
C)300-500
D)400-500

Answer 1

C
Explanation: C)Approximately 300-500 different species of bacteria are estimated to inhabit the oral cavity.

Question 2

The nonspecific plaque hypothesis relates periodontal disease to the amount of plaque present.It states that all individuals are equally susceptible to periodontal disease.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second statement is false.
D)First statement is false,second statement is true.

Answer 2

A
Explanation: A)The nonspecific plaque hypothesis relates periodontal disease to the amount of plaque present.It states that all individuals are equally susceptible to periodontal disease.

Question 3

Which of the following is NOT a function of gingival crevicular fluid?

A)Clears bacteria from sulcus
B)Vehicle for leukocytes
C)First line of defense against periodontal pathogens
D)Indicator of healthy sulcus

Answer 3

D
Explanation: D)Gingival crevicular fluid clears bacteria from sulcus,is a vehicle for leukocytes and is the first line of defense against periodontal pathogens.

Question 4

Which of the following is NOT a characteristic of aggressive periodontitis?

A)Amount of deposit inconsistent with severity of disease
B)Destruction to permanent first molars and incisors
C)Associated with the bacterial species AA
D)None of the above

Question 5

All periodontitis is preceded by gingivitis.All gingivitis progresses to periodontitis.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second statement is false.
D)First statement is false,second statement is true.

Question 6

A diagnosis of gingivitis implies that junctional epithelium has migrated apically,but is still on the enamel or cementoenamel junction.A diagnosis of periodontitis implies that junctional epithelium has migrated apically 2,3,or more millimeters.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second statement is false.
D)First statement is false,second statement is true.

Question 7

For each millimeter of apical migration of sulcular epithelial attachment,there is also one millimeter of periodontal fibers lost.This migration of junctional epithelium and clinical attachment loss is the hallmark sign for diagnosing periodontitis.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second statement is false.
D)First statement is false,second statement is true.

Question 8

Which of the following microbial species appear to be associated with chronic periodontitis?

A)Actinobacillus actinomycetemcomitans
B)Porphyromonas gingivalis
C)Prevotella intermedia
D)All of the above

Question 9

The specific plaque hypothesis attributes periodontal diseases to specific,although NOT known,bacteria.It also states that all individuals are equally susceptible to periodontal disease.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second statement is false.
D)First statement is false,second statement is true.

Question 10

Gingival crevicular fluid is an exudate.It contains many cells and proteins.

A)Both statements are true.
B)Both statements are false.
C)First statement is true,second statement is false.
D)First statement is false,second statement is true.