Development of Teeth

Question 1

What is the process by which the tissues of the developing tooth become hardened by the deposits of calcium salts?

Answer 1

calcification or mineralization

Question 2

What is the understanding and memorizing key sections of the primary and permanent tooth timetables?

Answer 2

chronology

Question 3

What is emergence?

Answer 3

precise stage of tooth development as it first appears or emerges through the gingiva

Question 4

What is eruption?

Answer 4

continuous and dynamic movement of the tooth as it develops from its initial calcification stage until it reaches occlusal contact with a tooth in the opposing arch

Question 5

What is the process of completed calcification of a tooth whereby the apical foramen has anatomically closed?

Answer 5

root completion

Question 6

What is it called when you lose a tooth from the oral cavity?

Answer 6

exfoliation

Question 7

When does calcification of primary teeth begin? end?

Answer 7

begin: 13 to 16 weeks in utero
end: 18-20 weeks in utero

Question 8

What is the sequence of primary teeth evidence of calcification?

Answer 8

central incisor 
1st molar 
lateral incisor 
canine 
2nd molar

Question 9

What is the last tooth to begin calcification? when does it begin?

Answer 9

maxillary 2nd molar at 19 weeks in utero

Question 10

When does first evidence of calcification occur?

Answer 10

20 weeks in utero

Question 11

What is the last primary tooth to erupt? When does it erupt?

Answer 11

maxillary 2nd molar (A, J) at age 29 month

Question 12

what is the first primary tooth to erupt? When does it erupt?

Answer 12

P, O at 8 months of age

Question 13

How many centers of calcification do primary teeth emerge from?

Answer 13

1

Question 14

Are there developmental depressions on the primary anterior teeth?

Answer 14

no

Question 15

What is the dental follicle?

Answer 15

sac-like structure that contains the developing tooth within the osseous structure of the jaws

Question 16

What orientation are permanent dental follicles to primary anterior teeth?

Answer 16

lingual

Question 17

What orientation of permanent dental follicles to primary molars?

Answer 17

within the bifurcation/trifurcations of the primary molar roots

Question 18

Developing follicles of permanent molar are located where in comparison to the primary molar teeth?

Answer 18

distal/posterior

Question 19

First permanent tooth to erupt?

Answer 19

1st molars

Question 20

What teeth begin calcification between 2 - 4 years of age?

Answer 20

premolar and second molars

Question 21

When do 3rd molars begin calcification?

Answer 21

around 9 years of age

Question 22

From birth to age 1 year of age which permanent teeth begin calcification?

Answer 22

first molar, central incisor, canine, lateral incisor

Question 23

What is the first primary tooth to erupt and at what age?

Answer 23

Mandibular central incisor, 8 months after birth

Question 24

When do permanent teeth begin their eruptive movements?

Answer 24

after the crown is formed

Question 25

What is the first primary tooth to be completed and at what age?

Answer 25

maxillary central incisor at 1.5 months after birth

Question 26

What is the last primary tooth to begin calcification and at what age?

Answer 26

Maxillary second molar, 19 weeks in utero

Question 27

When does calcification commence in utero?

Answer 27

13-16 weeks

Question 28

The follicle position of developing permanent anterior teeth are located ____ to the primary tooth roots

Answer 28

lingual

Question 29

The human permanent dentition is said to be complete at approximately age:

Answer 29

21

Question 30

The permanent maxillary canine exhibits crown completion before the permanent mandibular canine. The permanent mandibular first premolar exhibits crown completion after the permanent maxillary first premolar

A. Both statements false
B. First statement true; second statement false
C. First statement false; second statement true
D. Both statements true

Answer 30

A. Both statements are false

Question 31

The pulp chamber is large with newly erupted teeth, but becomes smaller as the tooth ages. The main function of the pulp is to form the dentin

A. Both statements false
B. First statement true; second statement false
C. First statement false; second statement true
D. Both statements true

Answer 31

D. Both statements are true

Question 32

Which tooth groups in the permanent mandibular arch are considered the “halfway” point regarding the order of eruption in the oral cavity?

Answer 32

Premolars