Question 1

The root of the mandibular canine is slightly shorter and more tapered than its maxillary counterpart.Both roots taper facially and apically.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true;the second statement is false. 
C)  The first statement is false;the second statement is true. 
D)  Both statements are false.

Question 2

Each of the following is true of deciduous teeth as compared with permanent teeth EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Deciduous teeth are generally lighter in color. 
B)  Dentin is thinner. 
C)  Pulp horns extend higher occlusally. 
D)  There is a pronounced cervical ridge. 
E)  Enamel is thicker and more protective.

Question 3

MATCHING
During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth.
-Canines

Accepted Answer

A) Facial 
B) No mamelons are visible. 
C) Roots are almost twice the length of crowns. 
D) Resembles the permanent mandibular first molar 
E) Primary tooth that bears least resemblance to another tooth

Question 4

The crown of a deciduous maxillary first molar is much larger than that of the maxillary second molar;however the roots of the second molar are longer.

Accepted Answer

A) True 
 B)False

Question 5

An extra margin of space is available for the eruption of the permanent canine as well as the first and second premolars because the formation of diastemas provides this extra space.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct,but the reason is NOT correct. 
D)  The statement is NOT correct,but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 6

The longer and more slender deciduous roots also flare more than those of the permanent dentition because this arrangement allows room for the developing permanent tooth crowns.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct,but the reason is NOT correct. 
D)  The statement is NOT correct,but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 7

Which deciduous molars have three root canals (Select all that apply. )?

Accepted Answer

A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second

Question 8

Which of these deciduous molars are wider mesiodistally than faciolingually?

Accepted Answer

A)  First molars 
B)  Second molars 
C)  Maxillary molars 
D)  Mandibular molars

Question 9

The occlusal table is narrower buccolingually because the buccal and lingual surfaces of deciduous molars taper occlusally.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct,but the reason is NOT correct. 
D)  The statement is NOT correct,but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 10

Decay progresses quickly in deciduous teeth due to each of the following EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Presence of high pulp horns 
B)  Thinner enamel covering crowns 
C)  Harder enamel 
D)  Thinner dentin

Exam 16: Deciduous Dentition

The root of the mandibular canine is slightly shorter and more tapered than its maxillary counterpart.Both roots taper facially and apically.

Each of the following is true of deciduous teeth as compared with permanent teeth EXCEPT one.Which one is the EXCEPTION?

MATCHING During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth. -Canines

The crown of a deciduous maxillary first molar is much larger than that of the maxillary second molar;however the roots of the second molar are longer.

An extra margin of space is available for the eruption of the permanent canine as well as the first and second premolars because the formation of diastemas provides this extra space.

The longer and more slender deciduous roots also flare more than those of the permanent dentition because this arrangement allows room for the developing permanent tooth crowns.

Which deciduous molars have three root canals (Select all that apply. ) ?

Which of these deciduous molars are wider mesiodistally than faciolingually?

The occlusal table is narrower buccolingually because the buccal and lingual surfaces of deciduous molars taper occlusally.

Decay progresses quickly in deciduous teeth due to each of the following EXCEPT one.Which one is the EXCEPTION?