Aging Teeth

Question 1

what is the upper first premolar?

Answer 1

the wolf teeth

Question 2

in the rule of 4s and 9s, what do each represent?

Answer 2

4 - canine teeth

9 - first molar

Question 3

what is the most accurate estimator for age?

Answer 3

eruption dates

Question 4

what tooth does Galvayne’s groove appear on?

Answer 4

upper corner incisor

Question 5

what age are all the incisors in wear?

Answer 5

5 years

Question 6

what age does di1 erupt?

Answer 6

6 days

Question 7

what age does di2 erupt?

Answer 7

6 weeks

Question 8

what age does di3 erupt?

Answer 8

6 months

Question 9

what age does I1 erupt?

Answer 9

2.5 years

Question 10

what age does I2 erupt?

Answer 10

3.5 years

Question 11

what age does I3 erupt?

Answer 11

4.5 years

Question 12

when do the canines typically erupt?

Answer 12

3.5 - 5 years

Question 13

what age does PM1 erupt?

Answer 13

5-6 months

Question 14

what age does PM2 erupt?

Answer 14

2.5 years

Question 15

what age does PM3 erupt?

Answer 15

3 years

Question 16

what age does PM4 erupt?

Answer 16

4 years

Question 17

what age does M1 erupt?

Answer 17

1 year

Question 18

what age does M2 erupt?

Answer 18

2 years

Question 19

what age does M3 erupt?

Answer 19

3.5 - 4 years

Question 20

are there more ridges in permanent or deciduous teeth?

Answer 20

deciduous

Question 21

what is the dental star a remnant of?

Answer 21

the pulp cavity

Question 22

at ~15-18 years, what will you see on the incisors?

Answer 22

only a dental star

Question 23

when does a dental star typically appear on I1

Answer 23

approx. 8

Question 24

when is the enamel spot (ring) present on I1-I3?

Answer 24

13 years

Question 25

what is the length v width of the corner incisor at age 5-9?

Answer 25

wider than it is tall

Question 26

what is the length v width of the corner incisor at age 9-10?

Answer 26

width = height

Question 27

what age does the corner incisor begin to get taller (height > width)?

Answer 27

> 10 years

Question 28

what age does Galvayne’s groove appear at the gum line?

Answer 28

10 years

Question 29

what year is Galvayne’s groove halfway down the incisor?

Answer 29

15 years

Question 30

what year is Galvayne’s groove the full length of the incisor?

Answer 30

20 years

Question 31

what year is Galvayne’s groove half remaining?

Answer 31

25 years

Question 32

what year is Galvayne’s groove gone?

Answer 32

30 years