Deck 5: Carious Lesions

Question 1

Which of the following is tooth enamel composed of?

A)Enamel junctions
B)Dentin
C)Enamel rods
D)Dentinal tubules

Answer 1

C
Explanation: C)Tooth enamel is made up of interlocking structures called enamel rods that contain billions of hydroxyapatite crystals.

Question 2

For dental caries to develop which conditions,must occur simultaneously?

A)There must be a susceptible tooth and host.
B)Cariogenic microorganisms must be present in a sufficient quantity.
C)There must be frequent oral consumption of refined sugars.
D)Both A and B.
E)All of the above.

Answer 2

E
Explanation: E)For caries to develop,four conditions must occur simultaneously: (1)there must be a susceptible tooth and host(2)cariogenic microorganisms must be present in a sufficient quantity(3)there must be frequent oral consumption of refined;and (4)this process must occur over a period of time.

Question 3

Which bacterial group is MOST implicated with dental caries?

A)Streptococcus Mutans d.
B)Lactobacillus species e.
C)Streptococcus aureus f.
D)Both A and B g.
E)All of the above

Answer 3

D
Explanation: D)Streptococcus Mutans and Lactobacillus species are both considered to be pathogenic bacteria species involved in caries process.

Question 4

Resting salivary flow is principally from the major salivary glands while stimulated salivary flow comes from the minor salivary glands.

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

Question 5

Root caries are more common in:

A)Older adults
B)Children
C)Drug addicts
D)Root caries occur similarly across age groups

Question 6

Which areas can carious lesions occur?

A)Gingival margin
B)Periodontal dentin ligament
C)Pit and fissures
D)Gingival sulcus

Question 7

The acronym CAMBRA stands for: k.

A)Caries Management by Risk Assessment
B)Caries Management by Reducing Acid l.
C)Caries Management by Restorative Adjuncts
D)Caries Management by Restoration and Assessment

Question 8

The four zones of the incipient lesion,described by Silverstone,are: h.

A)Outer zone,body of the lesion,dark zone,and translucent zone i.
B)Surface zone,body of the lesion,dark zone,and translucent zone j.
C)Light zone,body of the lesion,dark zone,and translucent zone
D)None of the above

Question 9

When there is an immediate drop in pH after carbohydrate consumption,this is termed:

A)Stephan curve
B)Liken curve
C)Liken drop
D)Strait of Reitz

Question 10

Though food types are important in producing a cariogenic (low pH)environment,frequent in-between-meal snacks and drinks can maintain a low pH environment throughout the day,which shifts the demineralization/remineralization continuum toward caries formation.

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