Primary Teeth

Question 1

Primary teeth crowns form between

Answer 1

4-6 months in utero

Question 2

All primary teeth are erupted by

Answer 2

Age 2-3

Question 3

All roots are completed by age

Answer 3

3

Question 4

Mand 1st molar

Answer 4

Example: Mandibular 1st Molar
 Crown complete at 3 years of age  Eruption at 6 years of age
 Root complete at 9 years of age

Question 5

Primary crown formation

Answer 5

Crown formation begins ~6 months in utero

Crowns complete about 6 months of age (~10-12 mos after formation begins)

Roots complete 1 1⁄2 - 3 years after emergence
(root formation takes place during eruption and emergence)

Exfoliation & replacement with succedaneous teeth: ~6-12 years of age

Question 6

Permanent crown formation

Answer 6

Crowns begin to form/calcify at birth → 16 years of age

Crowns complete ~3-4+ years prior to eruption

Roots complete ~3 years after eruption/emergence
(root formation takes place during eruption and emergence)

Question 7

First tooth to emerge

Answer 7

mand central incisor (6 months)

Question 8

2nd tooth to emerge

Answer 8

Other incisors

Question 9

Third tooth to emerge

Answer 9

First molars

Question 10

Fourth:

Answer 10

Canines

Question 11

Fifth:

Answer 11

2nd molars - age 2.

Question 12

6 years

Answer 12

First molars…& mandibular central incisors

Question 13

7-9 years

Answer 13

other incisors

Question 14

9-10 years

Answer 14

mand. canines

Question 15

10-12 years

Answer 15

premolars

Question 16

12 years

Answer 16

Maxillary canines

Question 17

12 years

Answer 17

Second molars

Question 18

6 mos P

Answer 18

Central incisor - Mand

Question 19

9 mos P

Answer 19

Lateral incisor - Mand

Question 20

12 mos P

Answer 20

1st mand molar

Question 21

16 mos P

Answer 21

Mand canine

Question 22

20 mos P

Answer 22

mand 2nd molar

Question 23

7 mos P

Answer 23

max central and lateral incisors

Question 24

14 mos P

Answer 24

1st molar max

Question 25

18 mos P

Answer 25

max canine

Question 26

24 mos- 3 year

Answer 26

max 2nd molar

Question 27

6-7 years

Answer 27

1st mand molar permanent, central incisors, max 1st molar

Question 28

7-8 years

Answer 28

mand lateral incisors permanent, max central incisors

Question 29

9-10 years

Answer 29

mand canines perm

Question 30

10-12 years

Answer 30

mand 1st premolar perm, max 2nd premolar

Question 31

11-12 years

Answer 31

mand 2nd premolar perm, max canine

Question 32

11-13 years

Answer 32

mand 2nd molar perm

Question 33

8-9 years

Answer 33

max lateral incisors perm

Question 34

10-11 years

Answer 34

max 1st premolar perm

Question 35

12-15 years

Answer 35

max 2nd molar perm

Question 36

6-9yearsold

Answer 36

o 1st permanent molars o Mandibular centrals o Maxillary centrals o Mandibular laterals o Maxillary laterals (1st molars & incisors)

Question 37

9- | 10 year olds

Answer 37

Eruptionof mandibular canines (9-10 yrs)

Question 38

10 - 12 Years

Answer 38

• Mandibularand maxillary premolars • 12 year old molars • Maxillary Canines often the last to erupt (canines, premolars & 1st molars)