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oral anatomy - lab practical final > Permanent Tooth anatomy - Incisors > Flashcards

Permanent Tooth anatomy - Incisors Flashcards

1
Q

where is the primate spaces in each arch located

A

mesial to maxillary canine

distal of mandibular canine

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2
Q

why do we have primate spaces

A

because teeth erupting are larger

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3
Q

functions of incisors

A

cut food
articulate speech
support lips (aesthetic)
guide mandible during movement

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4
Q

longest incisor crown

A

maxillary central incisor

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5
Q

how many lobes of development for incisors

A

4 lobes

*3 mamelons and cingulum

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6
Q

from facial view, characteristics of all incisors

A

straight incisal edge

longer incisocervically than MD

taper from contact to CEJ

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7
Q

from facial view of all incisors CEJ curves toward

A

apex

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8
Q

from facial view, all incisors’ roots taper to

A

apex

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9
Q

are roots of incisors longer/shorter than the crown

A

longer

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10
Q

which tooth has prominent cingulum on lingual, offset to the distal

A

maxillary central

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11
Q

eruption time for maxillary central incisor

A

7-8 years old

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12
Q

number of pulp horns and lobes for both central and lateral incisors in both arches

A

3 pulp horns

4 lobes (3 mammelons)

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13
Q

mandibular central incisor eruption time

A

6-7 years old

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14
Q

maxillary lateral incisor eruption time

A

8-9 years old

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15
Q

mandibular lateral incisor eruption year

A

7-8 years old

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16
Q

maxillary central incisor has mesial and distal marginal ridges __ lingual

A

concave

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17
Q

which teeth have disto-lingual twist

A

maxillary centrals incisors and mandibular lateral incisors

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18
Q

incisal edge is lingual to the labio-lingual midpoint

A

mandibular central incisor

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19
Q

mandibular central incisor cross section of root looks like

A

kidney or bow shaped

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20
Q

maxillary lateral incisor has a deep

A

lingual fossa/pit/developmental groove

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21
Q

where is cingulum located on mandibular lateral incisor

A

to the distal

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22
Q

has kidney or bow shaped cross section of root

A

mandibular central and lateral incisors

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23
Q

how many lobes and pulp horns in canines

A

1 pulp horn

4 lobes

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24
Q

maxillary canine eruption time

A

11-12 years old

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25
Q

mandibular canine eruption time

A

9-10

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26
Q

longest tooth, and longest root

A

maxillary canine

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27
Q

__ divides the mesial and distal lingual fossae on maxillary canine

A

lingual ridge

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28
Q

distal contour is highly convex, pinch from labial and incisal view

A

maxillary canine

29
Q

crown slightly distally inclined

A

mandibular canine

30
Q

prominent mesial concavity on crown, onto root

A

maxillary 1st premolar

31
Q

prominent mesial concavity on crown, onto root

A

maxillary 1st premolar

32
Q

maxillary first premolar number of pulp horns and lobes

A

2 horns

4 lobes

33
Q

eruption year for maxillary first premolar

A

10-11

34
Q

mesial groove extends across mesial marginal ridge

A

maxillary 1st premolar

35
Q

which cusp on maxillary first premolar is slightly taller

A

buccal cusp is slight taller

lingual cusp slightly toward mesial

36
Q

mesial cusp ridge longer than distal cusp cusp ridge +UNIQUE

A

MAXILLARY FIRST PREMOLAR

37
Q

number of pulp horns and lobes for mandibular first premolar

A

1-2(lingual cusp may be nonfunctional) horns

4 lobes

38
Q

age of eruption for mandibular first premolar

A

10-12

39
Q

prominent transverse ridge (snake eyes)

A

mandibular first premolar

40
Q

mesial marginal ridge shorter, lower than distal, 45 degree angle (almost parallel with buccal cusp ridge

A

mandibular first premolar

41
Q

large buccal and very small lingual cusp

A

mandibular first premolar

42
Q

buccal and lingual cusps are equal in height, with short central groove, lingual cusp is toward mesial , less crown taper toward CEJ

A

maxillary 2nd premolar

43
Q

maxillary 2nd premolar eruption age

A

10-12

44
Q

maxillary 2nd premolar number of pulp horns and lobes

A

2 pulp horns

4 lobes

45
Q

buccal cusp very large, lingual cusp toward mesial, could have one or two lingual cusp (mesial would be larger)

A

mandibular 2nd premolar

46
Q

age eruption for mandibular 2nd premolar

A

11-12

47
Q

number of pulp horns and lobes for mandibular 2nd premolar

A

2-3 pulp horns (if 3cusp)

4-5 lobes

48
Q

y shaped occlusal groove pattern

A

3 cusp mandibular 2nd premolar

49
Q

H or U shaped occlusal groove pattern

A

2 cusp mandibular 2nd premolar

50
Q

cusp of carabelli usually present on ML

A

maxillary 1st molar

51
Q

age eruption for maxillary first molar

A

6-7 years

52
Q

number of pulp horns and lobes of maxillary 1st molar

A

4 pulp horns (carabelli is nonfunctional)

4-5 lobes

53
Q

crown the same width MD as BL

A

maxillary 1st molar

54
Q

largest mandibular tooth MD

A

mandibular 1st molar

55
Q

mandibular 1st molar age eruption time

A

6-7 years

56
Q

number of pulp horns and lobes for mandibular first molar

A

5 for both

57
Q

age eruption for maxillary 2nd molar

A

12-15

58
Q

number of pulp horns and lobes for maxillary 2nd molar

A

3-4 pulp horns (if DL cusp is not present)

3-4 lobes

59
Q

4 cusps of similar size, occlusal groove pattern looks like a +

A

mandibular 2nd molar

60
Q

age eruption time for mandibular 2nd molar

A

11-13

61
Q

number of pulp horns and lobes for mandibular 2nd molar

A

4 for both

62
Q

largest CEJ cruve for all teeth

A

mesial of maxillary central incisor (up to 3.5 mm)

63
Q

labial contour of maxillary incisors; central or lateral incisor has more labial curvature ,is more convex,

A

maxillary lateral is more convex than central

64
Q

distal bend of root tip is more common than mesial bend in which teeth

A

mandibular incisors

65
Q

runs MD through the posterior teeth in each quadrant (formed bu the alighment of most occlusal fossae with central grooves and concave marginal ridges)

A

a sulcular groove

66
Q

orthognathic profile jaw is which class

A

class 1 - 72%

67
Q

mandibular molar is more distal than should be, retrognathic profile

A

class II - 22%

68
Q

mandibular molar is more mesial than should be, prognathic profile

A

Class ## - 6%

oral anatomy - lab practical final (7 decks)

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