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Dental Morphology > Maxillary Incisors > Flashcards

Maxillary Incisors Flashcards

1
Q

maxillary central incisors are used to

A

cut or incise food

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2
Q

shape of maxillary incisors

A

shovel

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3
Q

maxillary incisors are — teeth

A

succedaneous

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4
Q

maxillary teeth erupt at

A

7-8 years of age

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5
Q

the crown is — in outline

A

trapezoidal

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6
Q

the crown is – to – mm long (I-G) at the highest point on the CEJ to the incisal edge

A

10-11 mm

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7
Q

the crown is - to - mm wide (M-D) at the contact areas- points of greatest curvature

A

8-9 mm

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8
Q

is the anatomical crown longer or wider?

A

longer than it is wide

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9
Q

mesiodistal dimension at the CEJ is approximately - mm narrower

A

2 mm

6-7 mm

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10
Q

mesial outline of the tooth is relatively

A

straight or only slightly convex

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11
Q

hight of the convexity of the mesial surface is in the incised – of the tooth

A

1/3rd

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12
Q

height of convexity/contour is the point of greatest

A

convexity on a tooth surface

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13
Q

mesial contact area is in the incised – of the tooth

A

1/3rd

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14
Q

contact area

A

where the tooth touches another tooth

occurs at the mesial/distal height of contour

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15
Q

the distal outline is more — than the mesial outline

A

convex

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16
Q

height of contour or crest of the curvature on the distal is at the

A

junction of the middle and incised 1/3rds

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17
Q

the incisal outline is

A

straight

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18
Q

newly erupted teeth have

A

mamelons

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19
Q

mamelon

A

one of the 3 rounded protuberances found on the incisal edges of newly erupted incisors
-generally wear away with time to give a flat incisal edge

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20
Q

the mesioincisal angle is a

A

right angle

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21
Q

the distoincisal angle is more — than the mesioincisal angle

A

rounded

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22
Q

line angle

A

junction of two tooth surfaces

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23
Q

point angle

A

junction of three tooth surfaces

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24
Q

the vertical line or CEJ is curved toward the

A

root apex (apically)

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25
Q

labial developmental – and –

A

depressions and ridges

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26
Q

shape of the root

A

cone shaped, single root

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27
Q

the root is – mm long

A 
13 mm
(root is usually longer than the crown)
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28
Q

the apex of the root is slightly to the – of the long axis of the tooth

A

distal

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29
Q

long axis

A

a line extending through the center of an object lengthwise

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30
Q

shape of maxillary incisor form the lingual

A

trapezoidal

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31
Q

ridge

A

a linear elevation on the surface of a toot hand is named according to location

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32
Q

the lingual of the maxillary incisor has two ridges

A

media land distal marginal ridges

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33
Q

the lingual fossa is bounded by the

A

incisal edge, mesial and distal marginal ridges, and cingulum

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34
Q

cingulum

A

bulbous convexity on the cervical third of the lingual surface on an anterior tooth

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35
Q

pit

A

a small pinpoint depression in the depths of developmental processes

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36
Q

from the lingual aspect, the root is – shaped

A

cone

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37
Q

the root tapers toward the — slightly

A

distal

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38
Q

the crown and root are tapered to the

A

lingual

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39
Q

CEJ is curved — toward the root

A

convex

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40
Q

maxillary central incisor shape from the mesial aspect

A

triangular or wedge shaped

based in cervical area and apex at the incisal edge

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41
Q

the facial outline is

A

slightly curved

flat incisally

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42
Q

lingual outline is

A

concave-convex

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43
Q

the tooth is bisected

A

longitudinally

the incisal edge lies on the line
the incisal edge may be lingual to the line, but rarely facial to this line

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44
Q

the incisal surface slopes toward the

A

lingual

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45
Q

root is — shaped

A

cone

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46
Q

apex is

A

blunted

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47
Q

what has the greatest amount of curvature of any tooth in the mouth?

A

the mesial incisal line

48
Q

the cervical line is curved toward the

A

incisal

convex incisally

49
Q

mesial curvature is — than the distal aspect

A

greater

50
Q

the distal aspect is similar to the mesial aspect except the crown looks thicker at the

A

incisal 1/3

51
Q

the distal aspect is similar to the mesial aspect except the curvature of the cervical line or CEJ is – than in the mesial

A

less

still curves convexly in an incisal direction

52
Q

the incisal aspect is — in shape

A

triangular

tooth is wider facially than lingullary
facial surface is broad and flat
lingual surface is narrower and curved

53
Q

inscisal edge bisects the

A

faciolingual diameter

54
Q

the point of convexity of the cingulum

A

distal to the center of the lingual surface

55
Q

mesial and distal contact points center on the proximal surfaces

A

labiolingually

56
Q

proximal surface

A

the surface of a tooth that adjoins the surface of another tooth in the same arch
(ex. mesial and distal surfaces of adjacent teeth)

57
Q

MF and DF line angles are more prominent than

A

ML and DL line angles

58
Q

line angle

A

where 2 surfaces join

59
Q

DF line angle is the more obtuse/rounded than the

A

MF line angle

60
Q

development depressions and ridges seen on

A

labial surface

61
Q

crown length of the maxillary central incisor

A

10-11 mm

62
Q

crown width (MD) of the maxillary central incisor

A

8.5 mm

63
Q

labiolingual width of the maxillary central incisor

A

7 mm

64
Q

tooth length of the maxillary central incisor

A

13 mm

65
Q

the crown is

A

longer than it is wide

66
Q

the root is

A

longer than the crown

67
Q

the crown is wider

A

medisodistally then faciolingually

68
Q

mesial lobe

A

mesial marginal ridge and mesial part of the labial surface

69
Q

distal lobe

A

distal marginal ridge and vital part of the labial surface

70
Q

libial lobe

A

slightly prominent ridge

71
Q

lingual lobe

A

forms the cingulum

72
Q

mesiofacial and distofacial developmental depressions mark

A

junctions of lobes

73
Q

tmamelons are the rounded terminations of the

A

3 labial lobes

74
Q

pulp of the maxillary central incisor

A

single canal

75
Q

facial view of the pulp

A

pulp chamber with three pulp horns

pulp horns disappear as patient ages

76
Q

cross sectional view of the pulp

A

triangular in view
mesial, diistal, and facial wall
mesial wall is longer than the distal

77
Q

maxillary lateral incisors erupt at

A

8-9 years of age

78
Q

maxillary lateral incisors function to

A

supplement the central incisors

79
Q

which tooth varies in form more than any other tooth in the mouth?

A

the maxillary lateral incisor

exception: the third molars
ex. peg shaped laterals, dens in dente, twisted roots, etc

80
Q

which tooth is the most frequently congenitally absent anterior tooth?

A

the maxillary lateral incisor

third molars are the more recently congenitally absent tooth

81
Q

compared to the maxillary central incisors, the maxillary lateral incisors are

A

smaller in all dimensions, except tooth length
more rounded
more pronounced mesial and distal marginal ridges (lingual surface)
lingual fossa is deeper

82
Q

the facial aspect of the maxillary lateral incisor

A

smaller in all dimensions than the maxillary central incisor (by approx 2 mm)

83
Q

shape of the facial aspect of the maxillary lateral incisor

A

trapezoidal

84
Q

the facial aspect of the incisal outline is more

A

rounded

85
Q

the facial aspect of the mesial outline is slightly

A

convex

86
Q

the mesial height of contour is at at the junction of the

A

middle and incisal 1/3rds

87
Q

mesioincisal angle is a slightly

A

rounded angle

88
Q

distal outline is more — than the central

A

rounded

89
Q

distal height of counter in the

A

middle 1/3rd

90
Q

distoincisal angle is more rounded than

A

MI

91
Q

DI angle is more — than the DI angle in the central incisor

A

rounded

92
Q

labial surface is more — than the central incisor

A

convex

93
Q

root is —, as long or longer than the central incisor, usually tapers distally

A

pointed

94
Q

lingual aspect of the maxillary central incisor is — in shape

A

trapezoidal

95
Q

the lingual fossa is

A

deeper

often with a lingual pit

96
Q

prominent mesial and distal

A

marginal ridges

97
Q

the lingual aspect as a pronounced

A

cingulum

98
Q

the lingual aspect as deep developmental —

A

grooves

lingual developmental groove on the distal of cingulum

99
Q

lingual aspect the tooth tapers to the

A

lingual

100
Q

the mesial aspect of the maxillary lateral incisor is — in outline

A

triangular

101
Q

the labial outline of the maxillary lateral incisor is slightly

A

convex

102
Q

the lingual outline of the maxillary lateral incisor is

A

concavo-convex

103
Q

greatest curvature (height of contour) on the facial and lingual surfaces is located in the

A

cervical 1/3

this is also true in the central incisor

104
Q

the mesial aspect of the incisal surface/edge is angled

A

lingually

105
Q

the medial aspect of the cervical curvature curves

A

incisally

less than the central incisor

106
Q

the mesial aspect of the root is – shaped and tapers –

A

cone

apically

107
Q

the line through the center of the root bisects at the

A

incisal surface

108
Q

the distal aspect of the lateral maxillary incisor is — in outline

A

triangular

109
Q

the distal aspect appears — then the mesial view

A

wider

distal of tooth curved lingually to conform to arch shape

110
Q

the distal aspect cervical line curvature is - mm less than the media curvature

A

1 mm

111
Q

the distal aspect may have a developmental groove on the — of the crown, extending down the root

A

distal

112
Q

the incisal aspect of the contour is more

A

convex

ovoid in shape

113
Q

the incisal aspect of the crest of the cingulum is slightly to the — of center of the tooth

A

distal

114
Q

in incisal aspect of the DL line angle is more — than the ML line angle

A

rounded

both these lone angles are more rounded than the central incisor

115
Q

the mesial and distal contact areas are centered

A

labiolingually

116
Q

pulp of the lateral maxillary incisor is

A

single canal
facial view: 2 pulp horns
cross sectional view may be triangular, round, or ovoid

Dental Morphology (5 decks)

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