Unit 2 Aging Teeth

Question 1

Horse teeth aging

Answer 1

x

Question 2

accuracy is highest until

Answer 2

5 years of age; should be able to estimate within about 6 months

Question 3

what are the teeth used primarily for aging

Answer 3

lower incisors

Question 4

aging accuracy declines after

Answer 4

8-10 years of age

Question 5

younger horses angle of incisors

Answer 5

vertical angle

Question 6

older horses angle of incisors

Answer 6

horizontal

Question 7

step 1 of aging horse teeth

Answer 7

determine whther any deciduate incisors are present;

Question 8

deciduous incisors are ___ shaped

Answer 8

cup (smaller and whiter in color)

Question 9

step 2

Answer 9

if any deciduate incisors are present, the horse is less then 5 years of age

Question 10

eruption of DI1

Answer 10

6 days

Question 11

eruption of DI2

Answer 11

6 weeks

Question 12

eruption of DI3

Answer 12

6 months

Question 13

yearling upper and lower 3rd incisors

Answer 13

have less contact with each other (less wear)

Question 14

two-year old upper and lower 3rd incisors

Answer 14

have greater conact with each other (greater wear)

Question 15

erpuption of I1

Answer 15

At 2.5 yrs, in wear at 3 yrs

Question 16

eruption of I2

Answer 16

3.5 yrs; wear at 4 yrs

Question 17

eruption of I3

Answer 17

at 4.5 yrs; wear at 5 yrs

Question 18

eruption of canines teeth

Answer 18

3.5-5 yrs

Question 19

step 3

Answer 19

if no deciduate incisors are present, the horse is older than 5 years of age

Question 20

if tooth is wider than tall

Answer 20

5-9 yrs

Question 21

disappearance of cups at I1

Answer 21

6yrs

Question 22

disappearance of cups at I2

Answer 22

7 yrs

Question 23

disappearance of cups at I3

Answer 23

8 yrs

Question 24

tooth is approximately square

Answer 24

9-10 yrs

Question 25

tooth is taller than wide

Answer 25

>11 yrs

Question 26

oval to round incisors

Answer 26

5-9 yrs

Question 27

round to triangular incisors

Answer 27

10-15 yrs

Question 28

triangular to biangular incisors

Answer 28

16-20 yrs

Question 29

I1 dental star

Answer 29

8 yrs

Question 30

I2 dental star

Answer 30

9 yrs

Question 31

I3 dental star

Answer 31

10 years

Question 32

disappearance of enamel ring I1

Answer 32

11-12 yrs

Question 33

disappearance of enamel ring I2

Answer 33

12-13 yrs

Question 34

disappearance of enamel ring I3

Answer 34

12-14 yrs

Question 35

hook on upper third incisors

Answer 35

7 yrs and 11-13 yrs

Question 36

galvaynes groove on upper third incisors

Answer 36

x

Question 37

appears on tooth at gum line

Answer 37

9-10 years

Question 38

halfway down tooth

Answer 38

15 years

Question 39

along entire tooth

Answer 39

18-20 yrs

Question 40

on distal half of tooth

Answer 40

25 years

Question 41

small notch oat distal edge of tooth

Answer 41

30 yrs

Question 42

eruption of p1

Answer 42

5-6 months

Question 43

p2

Answer 43

2.5 yrs

Question 44

p3

Answer 44

3 yrs

Question 45

p4

Answer 45

4 yrs

Question 46

m1

Answer 46

1 yr

Question 47

m2

Answer 47

2 yrs

Question 48

m3

Answer 48

3.5-4 yrs

Question 49

ruminant deciduous formula

Answer 49

2 (I 0/3, C 0/1, P 3/3, M 3/3) = 32

Question 50

Ruminant permanent formula

Answer 50

2 (I 0/3, C 0/1, P 3/3, M 3/3) = 20

Question 51

2wks to 1 month

Answer 51

all deciduous incisors erupted (all 4 can be erupted at birth)

Question 52

1.5 to 2 yrs

Answer 52

permanent I1

Question 53

2-2.5 yrs

Answer 53

I2 erupted, I1 in wear

Question 54

3-3.5 yrs

Answer 54

I3 erupted

Question 55

3.5 yrs

Answer 55

I3 in wear

Question 56

3.5 to 4 yrs

Answer 56

I4 erupted

Question 57

5 yrs

Answer 57

I4 in wear

Question 58

6 yrs

Answer 58

I1 is level

Question 59

7 yrs

Answer 59

I2 is level

Question 60

8 yrs

Answer 60

I3 is level

Question 61

9 yrs

Answer 61

I4 is level

Question 62

10-12 yrs

Answer 62

I1 through I3 are pegs. I4 level

Question 63

15 yrs

Answer 63

incisors are small, rounded pegs

Question 64

> 15 yrs

Answer 64

some/all incisors missing; remaining inscisors small, rounded pegs

Question 65

6 months

Answer 65

molar 1

Question 66

1-1.5 years

Answer 66

molar 2

Question 67

2-2.5 years

Answer 67

molar 3