Permanent Maxillary Incisors Flashcards Preview

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Flashcards in Permanent Maxillary Incisors Deck (76):
1

the major function of maxillary incisors is to ___ and ___ food

cut and punch

2

do maxillary incisors have cusps?

no, just incisal ridges/edges

3

describe the incisal edge of maxillary incisors

  • starts out as incisal ridge
  • edge is formed after wear has occurred
  • edge is flattened linguoincisally
  • edge is found at the junction with the labial surface

4

how does the mesiodistal width of the maxillary central incisor compare to all other anterior teeth?

it is the widest 

5

the maxillary central incisor's labial surface is less ___ than the maxillary lateral or canine 

convex

6

the maxillary central incisor has a ___ or ___ shaped appearance

rectangualr or squared

7

the maxillary central incisor's mesial incisal angle is fairly ___, while the distal angle is fairly ___

  • sharp
  • rounded

8

where are mamelons found?

  • on the incisal ridge of permanent incisors
  • they are normally worn down to form an incisal edge

9

some maxillary central incisors will be fairly flat in ___ and ___ thirds

middle and incisal

10

from the lingual aspect, the maxillary central incisor is more ___ in appearance

irregular

11

from the lingual aspect, the maxillary central incisor's largest part is ___

concave

12

from the lingual aspect, the maxillary central incisor has ___ and ___ marginal ridges

mesial and distal

13

from the lingual aspect, the maxillary central incisor has a ___-like look

scoop

14

from the labial aspect, the maxillary central incisor's average length is ___mm from high point on cervix to incisal edge

10-11mm

15

from the labial aspect, the maxillary central incisor's mesiodistal length is about ___mm from contact to contact

8-9mm

16

from the labial aspect, the maxillary central incisor's mesial outline shows a slight ___, with the crest of curvature near the ____

  • convexity
  • mesioincisal angle

17

from the labial aspect, the maxillary central incisor's distal outline is more ___, with the crest of curvature ___ toward ___

  • convex
  • higher
  • cervical line

18

from the labial aspect, the maxillary central incisor's incisal outline curves very slightly ___ towards the ___

  • downward
  • center

19

the maxillary central incisor's root is ___ shaped

cone

20

the apex of the root of the maxillary central incisor is ___

blunt

21

the root of the maxillary central incisor is usually 2-3mm ___ than the crown

longer

22

the bisecting line of the root of the maxillary central incisor is through the ___, and the crown tends to parallel the ___

  • root
  • mesial

23

T or F:

from the lingual aspect, the maxillary central incisor is a reverse of the labial outline

true

24

from the lingual aspect, the maxillary central incisor has ___ and a definite concavity

convexities

25

from the lingual aspect, the maxillary central incisor has a ___ below the cervical line

cingulum

26

from the lingual aspect, the maxillary central incisor's cingulum is confluent with the ___ and ___

mesial and distal marginal ridges

27

from the lingual aspect, the maxillary central incisor has a ___ just below the cingulum

lingual fossa

28

from the lingual aspect, the maxillary central incisor's borders are the ___, ___, and ___

  • incisal ridge
  • marginal ridges
  • cingulum

29

from the lingual aspect, the maxillary central incisor may have developmental grooves from the ___ to the ___

cingulum to the fossa

30

from the lingual aspect, the maxillary central incisor's crown and root taper ___, so the ___ portion is narrower

  • lingually
  • lingual

31

from the mesial aspect, the maxillary central incisor is ___ shaped with the base at the ___

  • triangular
  • cervix

32

from the lingual aspect, the maxillary central incisor's bisecting line will go through the ___ and ___

apex and incisal ridge

33

from the lingual aspect, the maxillary central incisor's crests of curvature are just below the ___

cervical lines

34

from the lingual aspect of the maxillary central incisor, a line lingual to the ___ is rarely seen

incisal ridge

35

from the lingual aspect, the maxillary central incisor will have a ___ just below the cingulum

concavity

36

from the lingual aspect, the maxillary central incisor's curvature of the cervical line is ___ on the mesial surface than the distal

greater

37

from the distal aspect of the maxillary central incisor, more of the ___ surface is seen due to a slight curvature of the ___ surface

  • labial
  • labial

38

from the distal aspect, the maxillary central incisor's labial curvature helps adapt to the curvature of the ___

dental arch

39

from the distal aspect of the maxillary central incisor, the curvature of the cervical line is ___ than on the mesial

less

40

from the incisal aspect of the maxillary central incisor, the cervical portion of the labial surface is a broad ___

convexity

41

from the incisal aspect, the maxillary central incisor's incisal ridge is ___

clear

42

from the incisal aspect, the maxillary central incisor's edge generally slopes to the ___

lingual

43

from the incisal aspect, the maxillary central incisor's outline of the lingual portion tapers ___ toward the ___

  • lingually
  • cingulum

44

from the incisal aspect, the maxillary central incisor's mesiolabial and distolabial line angles are ___ and ___ than the lingual

prominent and wider

45

from the incisal aspect of the maxillary central incisor, more ___ is seen from this view

bulk

46

from the incisal aspect, the maxillary central incisor's labiolingual measurement is only ___ as great as the mesiodistal

2/3

47

from the incisal aspect, the maxillary central incisor's crown has a ___ shape

triangular

48

from the labiolingual section of the maxillary central incisor pulp chamber, it is narrow in ___, widest in ___, and tapers gradually to apex

  • incisal
  • cervical

49

from the mesiodistal section of the maxillary central incisor pulp chamber, it is ___ than labiolingual and conforms to the general shape of the ___, with ___ in younger teeth that taper evenly to apex

  • wider
  • outer surface
  • pulp horns

50

 the maxillary central incisor pulp cavity is widest at the ___ area

cervical

51

T or F:

the maxillary lateral incisor may vary more than any other tooth with the exception of the 1st molar

false:

with the exception of the 3rd molar

52

describe 4 ways in which the maxillary lateral incisors will vary from other teeth

  • peg shaped laterals are sometimes seen
  • may be missing
  • may have a palato-radicular groove
  • may see a large pointed tubercle

53

from the labial aspect, the maxillary lateral incisor has ___ curvature than the central, with a ___ incisal ridge

  • more
  • rounded

54

from the labial aspect, the maxillary lateral incisor's mesial outline resembles a central with more ___ at the angle

roundness

55

from the labial aspect, the maxillary lateral incisor's mesial crest of contour is at the junction of the ___ and ___ thirds

middle and incisal

56

from the labial aspect, the maxillary lateral incisor's distal outline is always ___ rounded

more

57

from the labial aspect, the maxillary lateral incisor's crest of contour on the distal is at the center of the ___ third

middle

58

from the labial aspect, the maxillary lateral incisor's labial surface is usually more ___ than the central, except with some ___ ones

  • convex
  • flat

59

from the labial aspect, the maxillary lateral incisor is usually about __mm narrower than the central 

2mm

60

from the labial aspect, the maxillary lateral incisor's root length is ___ in proportion to the crown than the central.  it is ___x the length of the crown

  • greater
  • 1.5x

61

from the labial aspect, the maxillary lateral incisor's root tapers to ___, curves to the ___, and ends in a sharper ___

  • apex
  • distal
  • apex

62

from the lingual aspect, the maxillary lateral incisor's mesial and distal marginal ridges are ___

marked

63

from the lingual aspect, the maxillary lateral incisor's cingulum is prominent, with ___

deep developmental grooves

64

from the lingual aspect, the maxillary lateral incisor's linguoincisal ridge is ___

well-developed

65

from the lingual aspect, the maxillary lateral incisor's lingual fossa is more ___

concave

66

from the lingual aspect, the maxillary lateral incisor may have deep developmental groove at the side of the ___, mostly distal

cingulum

67

from the mesial aspect, the maxillary lateral incisor resembles a small ___; the crown is ___ and the root is ___

  • central incisor
  • shorter
  • longer

68

from the mesial aspect, the maxillary lateral incisor appears thicker than the central due to heavy development of the ___

incisal ridge

69

from the distal aspect, the maxillary lateral incisor's width of the crown appears ___ than the mesial

thicker

70

from the distal aspect, the maxillary lateral incisor's curvature of the cervical line is ___ than mesial

less

71

from the distal aspect, the maxillary lateral incisor may have a ___ on the crown surface going onto the root

developmental groove

72

from the incisal aspect, the maxillary lateral incisor may resemble the ___ or it may look like a ___

  • central
  • canine

73

from the incisal aspect, the maxillary lateral incisor's labiolingual dimension may be ___ than the mesiodistal dimension

greater

74

is the pulp chamber anatomy of the maxillary lateral incisor similar to the central incisor?

yes, only smaller

75

what are the dimensions of the maxillary central incisor?

CI length of crown
length of root
MD diameter of crown
MD diameter of crown @cervix
LL diameter of crown
LL diameber of crown @cervix
curvature or cervical line - M
curvature of cervical line - D

in mm

CI length of crown - 10.5
length of root - 13
MD diameter of crown - 8.5
MD diameter of crown @cervix - 7
LL diameter of crown - 7
LL diameber of crown @cervix - 6
curvature or cervical line - M - 3.5
curvature of cervical line - D - 2.5

76

what are the dimensions of the maxillary lateral incisor?

CI length of crown
length of root
MD diameter of crown
MD diameter of crown @cervix
LL diameter of crown
LL diameber of crown @cervix
curvature or cervical line - M
curvature of cervical line - D

in mm

CI length of crown - 9.5
length of root - 12.5
MD diameter of crown - 5
MD diameter of crown @cervix - 3.5 
LL diameter of crown - 6
LL diameber of crown @cervix - 5.3
curvature or cervical line - M - 3
curvature of cervical line - D - 2