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Dental Anatomy > Permanent Maxillary Incisors > Flashcards

Permanent Maxillary Incisors Flashcards

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1
Q

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

A

cut and punch

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2
Q

do maxillary incisors have cusps?

A

no, just incisal ridges/edges

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3
Q

describe the incisal edge of maxillary incisors

A
  • 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
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4
Q

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

A

it is the widest

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5
Q

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

A

convex

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6
Q

the maxillary central incisor has a ___ or ___ shaped appearance

A

rectangualr or squared

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7
Q

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

A
  • sharp
  • rounded
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8
Q

where are mamelons found?

A
  • on the incisal ridge of permanent incisors
  • they are normally worn down to form an incisal edge
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9
Q

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

A

middle and incisal

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10
Q

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

A

irregular

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11
Q

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

A

concave

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12
Q

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

A

mesial and distal

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13
Q

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

A

scoop

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14
Q

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

A

10-11mm

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15
Q

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

A

8-9mm

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16
Q

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

A
  • convexity
  • mesioincisal angle
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17
Q

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

A
  • convex
  • higher
  • cervical line
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18
Q

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

A
  • downward
  • center
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19
Q

the maxillary central incisor’s root is ___ shaped

A

cone

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20
Q

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

A

blunt

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21
Q

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

A

longer

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22
Q

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

A
  • root
  • mesial
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23
Q

T or F:

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

A

true

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24
Q

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

A

convexities

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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 ## Footnote 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 ## Footnote 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

Dental Anatomy (11 decks)

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