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Large Animal Anatomy > Unit 2 Aging Teeth > Flashcards

Unit 2 Aging Teeth Flashcards

1
Q

Horse teeth aging

A

x

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2
Q

accuracy is highest until

A

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

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3
Q

what are the teeth used primarily for aging

A

lower incisors

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4
Q

aging accuracy declines after

A

8-10 years of age

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5
Q

younger horses angle of incisors

A

vertical angle

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6
Q

older horses angle of incisors

A

horizontal

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7
Q

step 1 of aging horse teeth

A

determine whther any deciduate incisors are present;

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8
Q

deciduous incisors are ___ shaped

A

cup (smaller and whiter in color)

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9
Q

step 2

A

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

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10
Q

eruption of DI1

A

6 days

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11
Q

eruption of DI2

A

6 weeks

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12
Q

eruption of DI3

A

6 months

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13
Q

yearling upper and lower 3rd incisors

A

have less contact with each other (less wear)

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14
Q

two-year old upper and lower 3rd incisors

A

have greater conact with each other (greater wear)

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15
Q

erpuption of I1

A

At 2.5 yrs, in wear at 3 yrs

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16
Q

eruption of I2

A

3.5 yrs; wear at 4 yrs

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17
Q

eruption of I3

A

at 4.5 yrs; wear at 5 yrs

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18
Q

eruption of canines teeth

A

3.5-5 yrs

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19
Q

step 3

A

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

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20
Q

if tooth is wider than tall

A

5-9 yrs

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21
Q

disappearance of cups at I1

A

6yrs

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22
Q

disappearance of cups at I2

A

7 yrs

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23
Q

disappearance of cups at I3

A

8 yrs

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24
Q

tooth is approximately square

A

9-10 yrs

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25
Q

tooth is taller than wide

A

> 11 yrs

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26
Q

oval to round incisors

A

5-9 yrs

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27
Q

round to triangular incisors

A

10-15 yrs

28
Q

triangular to biangular incisors

A

16-20 yrs

29
Q

I1 dental star

A

8 yrs

30
Q

I2 dental star

A

9 yrs

31
Q

I3 dental star

A

10 years

32
Q

disappearance of enamel ring I1

A

11-12 yrs

33
Q

disappearance of enamel ring I2

A

12-13 yrs

34
Q

disappearance of enamel ring I3

A

12-14 yrs

35
Q

hook on upper third incisors

A

7 yrs and 11-13 yrs

36
Q

galvaynes groove on upper third incisors

A

x

37
Q

appears on tooth at gum line

A

9-10 years

38
Q

halfway down tooth

A

15 years

39
Q

along entire tooth

A

18-20 yrs

40
Q

on distal half of tooth

A

25 years

41
Q

small notch oat distal edge of tooth

A

30 yrs

42
Q

eruption of p1

A

5-6 months

43
Q

p2

A

2.5 yrs

44
Q

p3

A

3 yrs

45
Q

p4

A

4 yrs

46
Q

m1

A

1 yr

47
Q

m2

A

2 yrs

48
Q

m3

A

3.5-4 yrs

49
Q

ruminant deciduous formula

A

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

50
Q

Ruminant permanent formula

A

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

51
Q

2wks to 1 month

A

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

52
Q

1.5 to 2 yrs

A

permanent I1

53
Q

2-2.5 yrs

A

I2 erupted, I1 in wear

54
Q

3-3.5 yrs

A

I3 erupted

55
Q

3.5 yrs

A

I3 in wear

56
Q

3.5 to 4 yrs

A

I4 erupted

57
Q

5 yrs

A

I4 in wear

58
Q

6 yrs

A

I1 is level

59
Q

7 yrs

A

I2 is level

60
Q

8 yrs

A

I3 is level

61
Q

9 yrs

A

I4 is level

62
Q

10-12 yrs

A

I1 through I3 are pegs. I4 level

63
Q

15 yrs

A

incisors are small, rounded pegs

64
Q

> 15 yrs

A

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

65
Q

6 months

A

molar 1

66
Q

1-1.5 years

A

molar 2

67
Q

2-2.5 years

A

molar 3

Large Animal Anatomy (14 decks)

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