Oral Anatomy Practice Test

Question 1

Beginning of eruption of permanent tooth starts_____________?

Accepted Answer

C.	When half of the root is still to be formed

Question 2

Root completion of the mandibular first molar takes place by the age_______________?

Accepted Answer

C.	9-10 years

Question 3

First evidence of calcification of maxillary permanent central incisors occurs at_____________?

Accepted Answer

A.	3-4 months

Question 4

Primary canine erupts______________?

Accepted Answer

A.	After D

Question 5

In the majority of situations, the first decidous tooth to erupt is the______________?

Accepted Answer

A.	Mandibular central incisor

Question 6

Which of these teeth are highly sturdy and usually the last ones to be lost ?

Accepted Answer

C.	Canines

Question 7

Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?

Accepted Answer

D.	Inferior and lingual

Question 8

The root completion of permanent teeth is achieved after __________ years o eruption?

Accepted Answer

B.	2-3

Question 9

Growth of all permanent teeth except last molars is completed by___________?

Accepted Answer

D.	17 years

Question 10

Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______________?

Accepted Answer

D.	1,2,6 in all quadrants

Question 11

A six- year molar begins to calcify at______________?

Accepted Answer

B.	At birth

Question 12

As compared to permanent tooth , root formation in primary tooth______________?

Accepted Answer

A.	Take less time

Question 13

At birth the following teeth are calcifying____________?

Accepted Answer

A.	Primary incisors & first molar

Question 14

A child has 12 permanent and 12 decidous teeth, what is his age____________?

Accepted Answer

A.	8½ years

Question 15

Dentition of humans is_______________?

Accepted Answer

B.	Omnivorous

Question 16

While charting the dentition of a child, the pedodontist finds that the following teeth are present in all the four quadrants; permanent central incisor , permanent lateral incisor , decidous cuspid , decidous first molar, decidous 2nd molar and permanent 1st molar. The eruptive pattern may be considered most nearly normal for a child aged_____________?

Accepted Answer

B.	7-10 years

Question 17

The first permanent tooth to erupt in the oral cavity is the_____________?

Accepted Answer

B.	Mandibular first molar

Question 18

The usual order of appearance of the primary teeth in the mouth is____________?

Accepted Answer

C.	Central incisors, lateral incisors, first molars canines, second molars

Question 19

Calcification of permanent first molar usually begins in the_____________?

Accepted Answer

C.	At birth

Question 20

The last primary tooth to be replaced by a permanent tooth is usually the_____________?

Accepted Answer

C.	Maxillary canine