Question 1

Which of the following usually signals the end of the mixed dentition period?

Accepted Answer

A)  Eruption of first primary tooth 
B)  Eruption of first permanent tooth 
C)  Shedding of first primary tooth 
D)  Shedding of last primary tooth

Question 2

Which of the following is considered a masticatory surface on a tooth?

Accepted Answer

A)  Lingual surface 
B)  Palatal surface 
C)  Incisive surface 
D)  Buccal surface

Question 3

How do the incisors function during mastication?

Accepted Answer

A)  Piercing and tearing food 
B)  Assisting canines with food 
C)  Biting and cutting food 
D)  Grinding food

Question 4

The division of each dental arch into three parts is based on the relationship to the:

Accepted Answer

A)  midline. 
B)  most posterior tooth. 
C)  tongue. 
D)  lips.

Question 5

Which of the following characteristics is noted in a patient during the primary dentition period as compared with the permanent dentition period?

Accepted Answer

A)  Larger overall crowns 
B)  Lighter enamel color 
C)  Longer roots 
D)  Greater number of teeth

Exam 15: Overview of Dentitions

Which of the following usually signals the end of the mixed dentition period?