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Dental Morphology > Maxillary Incisors > Flashcards

Maxillary Incisors Flashcards

1
Q

From the facial aspect of a maxillary central incisor, what shape is the crown outline?

A

Trapezoidal

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2
Q

From a facial aspect of a maxillary central incisor, the anatomical crown is:

A

Longer than it is wide

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3
Q

From a facial aspect of a maxillary central incisor, the mesial outline of the tooth is relatively:

A

Straight only slightly convex

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4
Q

From a facial aspect of a maxillary central incisor, the height of convexity of the mesial surface is in the:

A

Incisal 1/3

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5
Q

From a facial aspect of a maxillary central incisor, the distal outline is more _____ than the mesial outline

A

Convex

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6
Q

From a facial aspect of a maxillary central incisor, the height of contour on the distal is at the:

A

Junction of middle and incisal 1/3

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7
Q

Label the mesial and distal sides from the facial aspect of the maxillary central incisor

A

Left- distal

Right- mesial

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8
Q

From a facial aspect of a maxillary central incisor, the incisal outline is:

A

Straight

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9
Q

On newly erupted maxillary central incisors, ____ are commonly present

A

Mamelons

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10
Q

One of three rounded protuberances found on the incisal edges of newly erupted incisors:

A

Mamelons

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11
Q

From a facial aspect of a maxillary central incisor, the mesioincisal angle is:

A

A right angle

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12
Q

From a facial aspect of a maxillary central incisor, the distoincisal angle is:

A

More rounded than the mesioincisal angle

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13
Q

Looking from a facial aspect of a maxillary central incisor, label the distoincisal and mesioincisal line angles:

A

Left- distoincisal

Right- mesioincisal

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14
Q

The junction of two tooth surfaces:

A

Line angle

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15
Q

Junction of three tooth surfaces

A

Point angle

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16
Q

From a facial aspect of a maxillary central incisor, the cervical line (CEJ) is curved:

A

Apically

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17
Q

From a facial aspect of a maxillary central incisor what anatomical features are present?

A

Developmental depressions and ridges

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18
Q

How many roots does a maxillary central incisor contain?

A

One

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19
Q

From a facial aspect of a maxillary central incisor, what is the shape of the root?

A

Cone shaped with a blunt apex

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20
Q

In a maxillary central incisor, describe the length of the root compared to the crown:

A

Root is usually longer than the crown

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21
Q

From a facial aspect of a maxillary central incisor, the apex of the root is slightly:

A

To the distal of the long taxis of the tooth

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22
Q

A line extending through the center of the tooth lengthwise

A

Long axis

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23
Q

A linear elevation on a the surface of a tooth:

A

Ridge

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24
Q

Ridges are named according to their:

A

Location

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25
Q

A lingual fossa is bounded by:

A

Incisal edge, mesial/distal marginal ridges & cingulum

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26
Q

Occasionally present on the lingual aspect of a maxillary central incisor:

A

Lingual pit

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27
Q

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

A

Cingulum

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28
Q

A small pinpoint depression in the depths of developmental processes:

A

Pit

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29
Q

On a maxillary central incisor, from the lingual aspect, what shape is the root?

A

Cone shaped

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30
Q

On a maxillary central incisor, from the lingual aspect, the root tapers:

A

Slightly distally

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31
Q

On a maxillary central incisor, from the lingual aspect, the crown and root taper to:

A

Lingual

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32
Q

On a maxillary central incisor, from the lingual aspect, the CEJ is curved _____ toward the ____.

A

Convex; root

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33
Q

On a maxillary central incisor, from the mesial aspect, the shape of the crown is:

A

Triangular/wedged

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34
Q

On a maxillary central incisor, from the mesial aspect, the facial outline is ____ while the lingual outline is ____.

A

Slightly curved; concavoconvex

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35
Q

On a maxillary central incisor, from the mesial aspect, the incisal edge is:

A

Flat

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36
Q

Describe the lines:

A

Red: concavoconvex
Blue: convex (slightly curved)

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37
Q

On a maxillary central incisor, from the mesial aspect, the good is bisected longitudinally with the incisal edge on:

A

The line or slightly lingual (rarely facial)

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38
Q

On a maxillary central incisor, from the mesial aspect, the incisal surface slopes:

A

Slightly lingual

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39
Q

On a maxillary central incisor, from the mesial aspect, what is the root shape?

A

Cone w/ blunt apex

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40
Q

On a maxillary central incisor, from the mesial aspect, what is unique?

A

Mesial cervical line has the greatest amount of curvature of any tooth in the mouth

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41
Q

On a maxillary central incisor, from the mesial aspect, the cervical line is:

A

Convex incisally

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42
Q

On a maxillary central incisor, from the mesial aspect, the ___ curvature is greater than the ____ curvature

A

Mesial greatest than distal

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43
Q

On a maxillary central incisor, compare the thickness of the tooth from the distal aspect to the mesial aspect:

A

Crown looks thicker in the incisal 1/3 from a distal aspect

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44
Q

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

A

Less

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45
Q

On a maxillary central incisor, from the distal aspect, the CEJ curves:

A

Convex toward incisal

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46
Q

Label mesial/distal

A

Left distal, right mesial

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47
Q

On a maxillary central incisor, from the incisal aspect, what shape is seen?

A

Triangle

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48
Q

On a maxillary central incisor, from the incisal aspect, the tooth is wider _____ than ____.

A

Facially than linigually

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49
Q

On a maxillary central incisor, from the incisal aspect the facial surface is:

A

Broad and flat

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50
Q

On a maxillary central incisor, from the incisal aspect the lingual surface is:

A

Narrow and curved

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51
Q

On a maxillary central incisor, from the incisal aspect, the incisal edge bisects the:

A

Faciolingual diameter

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52
Q

Labels facial and lingual

A

Top: facial

Bottom: lingual

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53
Q

On a maxillary central incisor, from the incisal aspect, the distofacial line angle is:

A

Rounded

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54
Q

On a maxillary central incisor, from the incisal aspect, the mesiofacial line angle is:

A

Prominent

55
Q

On a maxillary central incisor, from the incisal aspect, the apex of the cingulum lies:

A

Slightly distal to the bisecting line

56
Q

On a maxillary central incisor, from the incisal aspect, the point of convexity from the cingulum is _____ to the center of the lingual surface

A

Distal

57
Q

On a maxillary central incisor, from the incisal aspect, the mesial and distal contact points are centered on the proximal surfaces:

A

Labiolingually

58
Q

The surface of a tooth that adjoin is the surface of another tooth in the same arch: (example- mesial and distal surfaces of adjacent teeth)

A

Proximal surface

59
Q

On a maxillary central incisor, from the incisal aspect, the ____ and ____ line angles are more prominent than the ___ and ___ line angles

A

MF and DF ; ML and DL

60
Q

On a maxillary central incisor, from the incisal aspect, the ____ line angle is more obtuse and rounded than the ___ line angle.

A

DF; MF

61
Q

On a maxillary central incisor, from the incisal aspect, what anatomical features can be seen on the Labial surface

A

Developmental depressions and ridges

62
Q

Name the line angles

A
  1. DF line angle
  2. DL line angle
  3. ML line angle
  4. MF line angle
63
Q

On a maxillary central incisor, the crown is ____ than it is ____

A

Longer than it is wide

64
Q

On a maxillary central incisor, the root is ___ compared to the crown

A

Longer

65
Q

On a maxillary central incisor, the crown is wider ___ than _____.

A

Mesiodistally than faciolingually

66
Q

The maxillary central incisor develops from:

A

4 lobes

67
Q

Name the 4 lobes that the maxillary central incisor develops from:

A

Mesial, distal, labial, lingual

68
Q

What lobe of the maxillary central incisor forms the mesial marginal ridge and mesial part of labial surface?

A

Mesial lobe

69
Q

What lobe of the maxillary central incisor forms the distal marginal ridge and distal part of labial surface

A

Distal lobe

70
Q

What lobe of the maxillary central incisor forms the slightly prominent ridge?

A

Labial

71
Q

What lobe of the maxillary central incisor forms the cingulum?

A

Lingual lobe

72
Q

Label the lobes of the maxillary central incisor:

A
  1. Distal lobe
  2. Labial lobe
  3. Mesial lobe
  4. Lingual lobe
73
Q

Number of pulp canals in maxillary central incisor:

A

Single canal

74
Q

From the facial view of a maxillary central incisor, the pulp chamber has:

A

3 pulp horns

75
Q

From the facial view of a maxillary central incisor, the three pulp horns:

A

Disappear with age

76
Q

From a cross-sectional view of a maxillary central incisor, what shape does the pulp chamber take on?

A

Triangular

77
Q

From a cross-sectional view of a maxillary central incisor what walls make up the triangular shape of the pulp canal?

A

Mesial, distal,and facial

78
Q

From a cross-sectional view of a maxillary central incisor pulp chamber, the ___ wall is longer than the ___ wall.

A

Mesial longer than the distal wall

79
Q

Label the type of section of the maxillary central incisor root chambers:

A

A: mesiodistal
B: transverse section
C: Labiolingual section

80
Q

Label the walls making up the transverse section of the maxillary central incisor root:

A

A- facial
B- mesial
C- distal

81
Q

Label the views of the maxillary central incisor from left to right:

A

Facial, lingual, incisal, mesial, distal

82
Q

What number is assigned to the maxillary right lateral incisor?

A

7

83
Q

What number is assigned to the maxillary left lateral incisor?

A

10

84
Q

When do the permanent maxillary lateral incisors erupt?

A

8-9 years old

85
Q

The maxillary lateral incisors supplement the ____ in function.

A

Central incisors

86
Q

An interesting fact is that the maxillary lateral incisors:

A

Vary in form more than any other tooth in the mount except 3rd molars

87
Q

An interesting fact is that maxillary lateral incisors are the most frequently:

A

Congenitally absent anterior tooth

88
Q

The maxillary lateral incisors are similar in shape to the:

A

Maxillary central incisors

89
Q

Compared to the maxillary central incisors, the maxillary lateral incisors: are _____ in all dimensions except for ____.

A

Smaller; root length

90
Q

Compared to the maxillary central incisors, the maxillary lateral incisors are more ____.

A

Rounded

91
Q

Compared to the maxillary central incisors, the maxillary lateral incisors contain more pronounced ____ and _____ on the lingual surface.

A

Mesial and distal marginal ridges

92
Q

Compared to the maxillary central incisors, the maxillary lateral incisors lingual fossa is:

A

Deeper

93
Q

From a facial aspect of a maxillary lateral incisor, the shape the outline takes is:

A

Trapezoidal

94
Q

From a facial aspect of a maxillary lateral incisor, the incisal outlined is more ____ than on the maxillary central incisor

A

Rounded

95
Q

From a facial aspect of a maxillary lateral incisor, the mesial outline is:

A

Slightly convex

96
Q

From a facial aspect of a maxillary lateral incisor, the mesial heigh of contour:

A

@ junction of middle and incisal 1/3

97
Q

From a facial aspect of a maxillary lateral incisor, the mesioincisal angle is:

A

Slightly rounded

98
Q

From a facial aspect of a maxillary lateral incisor, the distal outline is more ____ than a maxillary central incisor.

A

Rounded

99
Q

From a facial aspect of a maxillary lateral incisor, the distal heigh of contour is:

A

In middle 1/3

100
Q

Compare the DI and MI angles of a maxillary lateral incisor:

A

Distoincisal angle is more rounded

101
Q

Compare the degree of curvature of the DI line angle between the maxillary central and lateral incisors

A

DI angle is more rounded in the maxillary lateral incisors

102
Q

From a facial aspect of a maxillary lateral incisor, the labial surface is more _____ than the central incisor

A

Convex

103
Q

From a facial aspect of a maxillary lateral incisor the root is _____ and _____ or _____ than the central incisor and usually tapers _____.

A

Pointed and as long or longer; distally

104
Q

From a lingual aspect of a maxillary lateral incisor, what shape does the crown take on?

A

Trapezoidal

105
Q

From a lingual aspect of a maxillary lateral incisor, the lingual fossa is _____ and often contains ____.

A

Deeper; lingual pit

106
Q

From a lingual aspect of a maxillary lateral incisor, what anatomical features are present?

A

Prominent mesial and distal marginal ridges

107
Q

From a lingual aspect of a maxillary lateral incisor, a pronounced ____ is present.

A

Cingulum

108
Q

From a lingual aspect of a maxillary lateral incisor, deep ____ are present.

A

Developmental grooves

109
Q

From a lingual aspect of a maxillary lateral incisor, the lingual developmental groove is on the _____ of the ____.

A

Distal of cingulum

110
Q

What is the deep groove present distal to the cingulum of the maxillary lateral incisor?

A

Lingual developmental groove

111
Q

From a lingual aspect of a maxillary lateral incisor, the tooth tapers:

A

Lingually

112
Q

From a mesial aspect of a maxillary lateral incisor, the crown takes on what shape?

A

Triangular

113
Q

From a mesial aspect of a maxillary lateral incisor, the labial outline is slightly:

A

Convex

114
Q

From a mesial aspect of a maxillary lateral incisor, the lingual outline is:

A

Concavo-convex

115
Q

From a mesial aspect of a maxillary lateral incisor, the height of contour on the facial and lingual surfaces is located in the:

A

Cervical 1/3

116
Q

From a mesial aspect of a maxillary lateral incisor, the incisal edge is angled:

A

Lingually

117
Q

From a mesial aspect of a maxillary lateral incisor, the cervical curvature curves ___, but less than the ____.

A

Incisally; maxillary central incisor

118
Q

From a mesial aspect of a maxillary lateral incisor, the root is ____ shaped and tapers ____.

A

Cone; apically

119
Q

From a mesial aspect of a maxillary lateral incisor, the line through the center of the root bisects the:

A

Incisal surface

120
Q

From a distal aspect of a maxillary lateral incisor, the crown takes on what shape:

A

Triangular

121
Q

From a distal aspect of a maxillary lateral incisor, the tooth appears ____ than in the mesial view

A

Wider

122
Q

From a distal aspect of a maxillary lateral incisor, the distal of the tooth is curved _____ to conform a ____ shape.

A

Lingually; arch

123
Q

From a distal aspect of a maxillary lateral incisor, the cervical line is 1mm ____ than the ____ curvature

A

Less; mesial

124
Q

From a distal aspect of a maxillary lateral incisor, a ______ may be present on the distal of the crown extending down the root.

A

Developmental groove

125
Q

From a incisal aspect of a maxillary lateral incisor, the contour is more ____ resulting in a ____ shape.

A

Convex; ovoid

126
Q

From a incisal aspect of a maxillary lateral incisor, the crest of the cingulum is slightly _____ to the center of the tooth

A

Distal

127
Q

From a incisal aspect of a maxillary lateral incisor, the ___ line angle is more rounded than the ____ line angle

A

DL ; ML

128
Q

Both the DL and ML line angles of the maxillary lateral incisors are ______ than in the maxillary central incisor

A

More rounded

129
Q

From a incisal aspect of a maxillary lateral incisor, the mesial and distal contact areas are centered:

A

Labioloingually

130
Q

How many pulp canals are found in the maxillary lateral incisors?

A

Single canal

131
Q

In the maxillary lateral incisors from a facial view, how many pulp horns are present?

A

2 pulp horns

132
Q

What shapes can the cross sectional view of the pulp canal take on of the maxillary lateral incisor?

A

Triangular, round, or ovoid

133
Q

Label the views of the maxillary lateral incisor from left to right:

A

Facial, lingual, incisal, mesial, distal

Dental Morphology (11 decks)

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