Eruption dates

Question 1

Eruption of:

Primary upper first incisor (A)

Answer 1

8 months

Question 2

Eruption of:

Primary upper second incisor (B)

Answer 2

9 months

Question 3

Eruption of:

Primary upper canine (C)

Answer 3

18 months

Question 4

Eruption of:

Primary upper first molar (D)

Answer 4

14 months

Question 5

Eruption of:

Primary upper second molar (E)

Answer 5

24 months

Question 6

List the order of eruption of upper primary teeth

Answer 6

A - 8 months 
B - 9 months 
C- 18 months 
D- 14 months 
E- 24 months

Question 7

Eruption of:

Primary lower first incisor (A)

Answer 7

6 months

Question 8

Eruption of:

Primary lower second incisor (B)

Answer 8

7 months

Question 9

Eruption of:

Primary lower canine (C)

Answer 9

16 months

Question 10

Eruption of:

Primary lower first molar (D)

Answer 10

12 months

Question 11

Eruption of:

Primary lower second molar (E)

Answer 11

20 months

Question 12

List the order of eruption of lower primary teeth

Answer 12

A - 6m
B - 7m
C - 16m
D - 12m
E- 20m

Question 13

Write a table of the eruption of upper and lower primary teeth (in months)

Answer 13

_ Upper_ Lower 
A  8     6 
B  9     7
C  18   16
D  14   12
E  24   20

Question 14

Time of eruption in years of the:

UPPER PERMANENT FIRST INCISOR (1)

Answer 14

7-8

Question 15

Time of eruption in years of the:

UPPER PERMANENT SECOND INCISOR (2)

Answer 15

8-9

Question 16

Time of eruption in years of the:

UPPER PERMANENT CANINE (3)

Answer 16

11-12

Question 17

Time of eruption in years of the: UPPER PERMANENT FIRST PREMOLAR (4)

Answer 17

10

Question 18

Time of eruption in years of the: UPPER PERMANENT SECOND PREMOLAR (5)

Answer 18

11

Question 19

Time of eruption in years of the: UPPER PERMANENT FIRST MOLAR

Answer 19

6

Question 20

Time of eruption in years of the: UPPER PERMANENT SECOND MOLAR

Answer 20

12-13

Question 21

Time of eruption in years of the: LOWER PERMANENT FIRST INCISOR

Answer 21

6-7

Question 22

Time of eruption in years of the: LOWER PERMANENT SECOND INCISOR

Answer 22

7-8

Question 23

Time of eruption in years of the: LOWER PERMANENT CANINE

Answer 23

10-11

Question 24

Time of eruption in years of the: LOWER PERMANENT FIRST PREMOLAR

Answer 24

10-11

Question 25

Time of eruption in years of the: LOWER PERMANENT SECOND PREMOLAR

Answer 25

11

Question 26

Time of eruption in years of the: LOWER PERMANENT FIRST MOLAR

Answer 26

6

Question 27

Time of eruption in years of the: LOWER PERMANENT SECOND MOLAR

Answer 27

12

Question 28

Eruption of 8s? When do they finish calcification

Answer 28

Highly variable

• eruption around 17-21 years
• Calcification complete at 8-14 years

Question 29

Which teeth have completed calcification at birth?

Answer 29

Upper and lower 6s

Question 30

Which teeth have completed calcification at 6 months

Answer 30

Upper 1 and 3

Lower 123

Question 31

Which teeth have completed calcification at 2 years

Answer 31

Upper 2 and 4

Lower 4s

Question 32

Which teeth have completed calcification at 4 years

Answer 32

Upper 5s and 7s

Lower 5s and 7s

Question 33

When is root formation generally complete?

Answer 33

2-3 years after eruption

Question 34

Draw a table on the eruption dates of upper and lower permanent teeth

Answer 34

\_\_\_Upper\_\_Lower
1 --- 7-8 --- 6-7 
2--- 8-9 --- 7-8 
3--- 11-12 -- 10-11
4--- 10 --- 10-11
5--- 11 --- 11 
6--- 6 --- 6 
7---12 --- 12