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D1 Fall > RD 1: Incisors and Canines > Flashcards

RD 1: Incisors and Canines Flashcards

1
Q

function of anterior teeth

A

cut food, lip support, maintain esthetics

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2
Q

functions of incisors

A

cut food, speech, esthetics

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3
Q

cutting action of incisors

A

slice, chop, cut

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4
Q

cutting action of canines

A

tear, shear, rip

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5
Q

Permanent Anterior Eruption

A

-centrals always before lateral
-mand central/lateral before max central/lateral
-canines erupt last after central/lateral incisors

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6
Q

ridges on incisors

A

mesial marginal ridge and distal marginal ridge

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7
Q

incisal edges on incisors

A

labial incisal edge and lingual incisal edge
(only maxillary incisors)

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8
Q

what kind of fossa found on incisors and what surface

A

lingual fossa (2 maxillary, 1 mandibular)

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9
Q

developmental lobes on incisors (facial view)

A

mesial, middle, distal

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10
Q

what separates developmental lobes

A

developmental depressions (2 lines)

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11
Q

4th lingual lobe on incisor

A

cingulum

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12
Q

describe the incisor crown’s incisal egde

A

relatively straight or slightly curved

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13
Q

shape of incisors

A

-relatively rectangular
-longer incisogingivally than wide mesiodistally

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14
Q

incisor mesioincisal angles are more ______ than distoincisal angles

A

sharper (acute)

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15
Q

incisor crown contact areas on mesial surface are located where

A

incisal third

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16
Q

incisor crown contact areas on distal surface are located ……

A

more cervical than mesial
-EXCEPT : on distal of mandibular central (level contact)

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17
Q

from facial view, incisor roots become _____ from cervical line to apex

A

more narrow, taper

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18
Q

incisor roots are ______ faciolingually than mesiodistally

A

wider
-EXCEPT: maxillary central incisors (widths are equal)

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19
Q

incisor roots bend in apical third except which teeth

A

maxillary central incisor roots
-unlikely to bend
-more likely to bend distal

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20
Q

compare sizes of mandibular vs maxillary incisors

A

mandibular generally smaller than maxillary

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21
Q

mandibular incisor crowns are wider ______ while maxillary incisors are wider _____

A

faciolingually, mesiodistally

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22
Q

mandibular incisor crowns have ______ lingual surfaces with ________ anatomy than maxillary incisors

A

smoother, less prominent

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23
Q

compare length of mandibular and maxillary incisor roots in proportion to their crowns

A

mandibular roots are longer in proportion to their crowns than maxillary roots

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24
Q

which crowns are more symmetrical (facial)

A

mandibular incisors

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25
Q

which have larger cingulum

A

maxillary incisors

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26
Q

compare maxillary central incisors to mandibular

A

larger in all dimensions

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27
Q

maxillary central is the _____ of all the incisors

A

widest

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28
Q

maxillary central is narrowest in _____ third and widest in the ______ third

A

cervical, incisal

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29
Q

max lateral incisor is _______ mesiodistally to the max central incisor,
while the root of the max lateral is _______ than the max central

A

narrower, longer

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30
Q

max central is shaped like a

A

trapezoid

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31
Q

max central is slightly longer _______ than ______

A

incisocervically than mesiodistally

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32
Q

imbrication lines

A

small parallel lines that are formed due to arrangement of enamel prisms (facial view)
-max central

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33
Q

on max central incisor (lingual view) compare lengths of marginal ridges

A

mesial marginal ridge is longer than distal marginal ridge

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34
Q

on max central (lingual view), the cingulum is offset to which side

A

distal

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35
Q

when looking at max central incisor from insical view, compare the two surfaces

A

facial slightly convex, lingual more convex

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36
Q

on max central incisor (proximal view), where does the incisal edge lie compared to the root axis line

A

incisal edge is on or facial to root axis line

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37
Q

on max central incisor (proximal), which surface exhibits that greatest depth of curvature

A

mesial exhibits greater depth of curvature than any other surface

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38
Q

difference between max central and max lateral

A

max lateral is more round than max central

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39
Q

what types of variation can max lateral incisors display

A

-peg lateral
-agenesis (missing)
-pits
-grooves

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40
Q

max lateral has a ________ mesioncisal angle than max central

A

more rounded

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41
Q

max lateral have mesial and distal marginal ridges that are more _______ than max central

A

prominent

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42
Q

max lateral have lingual fossa that is ______ than max central

A

deeper or more pronounced

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43
Q

more likely to find _____ and _____ on cingulum of max lateral than max central

A

pits and grooves

44
Q

linguogingival groove (fissure) may cross ________ onto cementum

A

cingulum

45
Q

max lateral incisors (incisal view) exhibit more convexity ______ and ______ than max central incisors

A

labially and lingually

46
Q

on max lateral incisors (insical view) cingulum is placed ____________ compared to central incisor

A

nearly centered mesiodistally

47
Q

mandibular incisors

A

simplest and least variable teeth
-smallest permanent teeth
-resemble each other the most

48
Q

compared to max incisors, mand incisor crowns are _________ incisocervically and ___________ mesiodistally

A

longer, narrower

49
Q

mand central incisors has the narrowest ______________ dimension of any tooth

A

mesiodistal

50
Q

mand central incisors have the __________ crown size of any permanent tooth

A

smallest

51
Q

key feature of mandibular central incisors

A

crown symmetry (twins)

52
Q

describe mesioincisal angle of mandibular central incisors

A

sharp compared to other incisors

53
Q

describe mandibular central incisors from a lingual view

A

-relatively smooth
-slight concavity for lingual fossa
-indistinct marginal ridges
-small cingulum

54
Q

mandibular central incisors from a proximal view have a facial surface _________

A

uniformly convex

55
Q

on a mandibular central incisor, incisal edge lies __________

A

on or lingual to root axis line

56
Q

(incisal view) compared to the max central incisor, the mand central incisor is wider ________ than __________

A

labiolingually, mesiodistally

57
Q

mand lateral incisors resemble mand central but are more ______ and ____

A

rounded, slightly larger

58
Q

on a mandibular lateral incisor, the disto-incisal angle is more _________ than the mandibular central

A

rounded

59
Q

lingual view of a mandibular lateral incisor is similar to mand central but the cingulum is more ___________

A

offset to distal

60
Q

promixal view on mandibular lateral incisors is similar to mand central but, when looking at the mesial surface, ___________

A

you can see the distal incisal edge in the background because it turns

61
Q

insical edge on mandibular lateral incisors curves toward ________ and the cingulum is displaced toward the ___________

A

lingual, distal
-give it the appearance of being slightly twisted

62
Q

mesio-incisal angle is more ________, while distal-incisal angle is more_______

A

square, rounded

63
Q

contact points on max central (mesial and distal)

A

mesial= incisal
distal= juntion b/w incisal and middle

64
Q

contact points on max lateral (mesial and distal)

A

mesial= junction b/w incisal and middle
distal= middle

65
Q

contact points on max canine (mesial and distal)

A

same as max lateral
mesial = junction b/w incisal and middle
distal = middle

66
Q

contact points on mand central (mesial and distal)

A

mesial = incisal
distal = incisal

67
Q

contact points on mand distal (mesial and distal)

A

same as mand central
mesial = incisal
distal = incisal

68
Q

contact points on mand canine (mesial and distal)

A

mesial = incisal
distal = middle

69
Q

all teeth have facio-lingual contact points in the _______

A

middle third

70
Q

overjet

A

normal bite occurs, the horizontal distance between incisal edges on max and mand teeth is normal

71
Q

overbite

A

normal bite occurs, the vertical distance between incisal edges on max and mand teeth is normal

72
Q

rank incisal embrasures from largest to smallest

A

1) b/w max canine and max lateral
2)b/w mand canine and mand lateral
3)b/w max lateral and max central
4) b/w max centrals
5) b/w mand lateral and central
6) b/w mand centrals

73
Q

anterior teeth with centralized cingulum

A

mand central, max canine, max lateral

74
Q

anterior teeth with distal cingulum

A

-max central
-mand canine
-mand lateral

75
Q

anterior tooth with the tallest crown

A

mandibular canine

76
Q

widest anterior tooth

A

maxillary central incisor

77
Q

smallest anterior tooth

A

mandibular central incisiors

78
Q

first succedaneous tooth

A

mandibular central incisor (replaces tooth)

79
Q

smallest facial and incisal embrasure

A

mandibular central incisor

80
Q

functions of canines

A

-support the lips and facial muscles
-cute, pierce, shear food
-provide protective mechanism when max and mand canines overlap (canine guidance)

81
Q

longest of permanent teeth

A

canines

82
Q

which teeth are the last to be lost from dental diseases

A

canines

83
Q

large, long root of canines allows ________

A

good anchorage for abutments

84
Q

2 types of fossa on canines

A

distal lingual and mesial lingual

85
Q

2 types of cusp ridges on canine

A

distal cusp ridge and mesial cusp ridge

86
Q

_______ canine crown is longer than the _______ canine crown

A

mandibular, maxillary

87
Q

canines are the only teeth with a ______ ridge

A

labial

88
Q

max and mand canine crowns have greater measurements ________ than _________

A

labiolingually, mesiodistally

89
Q

on canines, the ________ contact area is more cervical than the ________ contact area

A

distal, mesial

90
Q

canine eminence

A

projection of bone that houses root of canine (in gums)

91
Q

what seperates mesial and distal fossae

A

lingual ridge

92
Q

cingulum on maxillary canine is

A

large, centered

93
Q

on a mx canine, the mesial marginal ridge is ________ than the distal marginal ridge

A

longer

94
Q

on a max canine, the cusp tip is _____ to the root axis line

A

labial

95
Q

the root of the max canine has what features (proximal view)

A

mesial and distal depressions

96
Q

max canine (incisal view) is wider ________ than ________

A

labiolingually , mesiodistally

97
Q

on a mand canine (labial view) the mesial side is _______-

A

flat, in line with mesial side of root

98
Q

mandibular canine is __________ than the maxillary canine

A

slimmer

99
Q

on a mand canine, the ridges and fossa are _______

A

not prominent

100
Q

how many roots does a mandibular canine have

A

1, but can have 2

101
Q

on a mand canine, the incisal ridge lies ______ to the root axis line

A

lingual

102
Q

proximally, a mand canine has _________ crown-root convexity on facial surface

A

almost continuous

103
Q

on a mand canine, (incisal view), the ______ dimension is larger than ________

A

labiolingual, mesiodistal

104
Q

the mandibular canine has _______ anatomy than the max canine

A

less obvious

105
Q

what is the widest anterior tooth facio-lingually

A

canine

106
Q

on a max canine _____ cusp slope is shorter than the _____ cusp slope

A

mesial, distal

107
Q

which anterior tooth is most likely to have a bifurcated root

A

mandibular canine

D1 Fall (14 decks)

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