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Restorative Dentistry > Permanent Anterior Teeth Anatomy > Flashcards

Permanent Anterior Teeth Anatomy Flashcards

1
Q

Maxima central incisor numbers

A

8, 9

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2
Q

Mandible central incisor numbers

A

24, 25

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3
Q

Maxilla lateral incisor numbers

A

7, 10

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4
Q

Mandible lateral incisors numbers

A

23, 26

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5
Q

Functions of incisors

A

-cut food (mandibular incisors act like moving blades against maxillary incisors)
-speech (work in tandem with lips and tongue)
-esthetics(highest impact on appearance of smile, provide lip support)

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6
Q

When do anterior teeth show first evidence of calcification

A

Before age 1

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7
Q

Eruption sequence anterior teeth

A

Mandibular centrals, mandibular laterals, max centrals, max laterals, mand canines, max canines

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8
Q

Eruption age mandibular centrals

A

6-7 yo

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9
Q

Eruption age mandibular laterals

A

7-8 yo

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10
Q

Eruption age maxillary centrals

A

7-8 yo

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11
Q

Eruption age maxillary laterals

A

8-9 yo

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12
Q

Eruption age mandibular canines

A

9-10 yo

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13
Q

Eruption age maxillary canines

A

11-12 yo

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14
Q

Morphology of incisors

A

Cervical line, cingulum, mesial marginal ridge, distal marginal ridge, lingual fossa, incisal edge (labial and lingual), incisal ridge

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15
Q

How many developmental lobes on incisors ?

A

3 - mesial, middle, distal on facial
**usually two shallow vertical developmental depressions separating the lobes
4th can be the lingual lobe (forms cingulum)

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16
Q

Mammelons

A

3 rounded elevations on incisal edge
Goes away with age, present on newly erupted incisors

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17
Q

All incisor crowns have a relatively ______ incisal edge &the crowns are _________

A

Straight or slightly curved
Rectangular (longer incisogingivally than wide mesiodistally)

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18
Q

Incisor crown outlines are more _____ on the distal than mesial except for _______, which are symmetrical

A

Convex, mandibular central incisors

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19
Q

Incisor mesioincisal angles are more ____ than distoincisal edges except on the________ where there angles are not noticeably different

A

Acute (sharper), mandibular central incisors

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20
Q

Incisor crown contact areas on mesial surfaces are located in the _______

A

Incisal third

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21
Q

Distal contact areas on incisor crowns are more _____ than the mesial except on the distal of the __________
Why?

A

Cervical, mandibular central
On same level due to symmetry of mand central incisors

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22
Q

Incisor roots ___ from the cervical line to the apex

A

Taper (become more narrow)

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23
Q

On maxillary central incisors, the mesiodistally width of the root is _______ as the faciolingual thickness

A

Approx the same

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24
Q

most incisor roots

A

Are wider faciolingually than mesiodistally (flattened)

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25
Q

Incisor roots may bend in the ______ third; more likely to bend in the ___ direction
EXCEPT ________ which are not as likely to bend

A

Apical, distal
Maxillary central incisor roots

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26
Q

Mandibular incisors are generally ______ than maxillary incisors
Mandibular central and lateral incisors are nearly ____

A

Smaller
The same size (in the same mouth)

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27
Q

Mandibular incisors crowns are ___than maxillary incisor crowns (shape)
Mandibular incisor crowns have contact areas located _____ to the incisal ridge than maxillary incisal crowns

A

Flatter
Closer

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28
Q

Mandibular incisor crowns are relatively ____ faciolingually than mesiodistally
Maxillary incisors are relatively ____ mesiodistally than faciolingually

A

wider, wider

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29
Q

Do mandibular or maxillary central incisors have less prominent anatomy ?
Which has smoother lingual surfaces?

A

Mandibular, mandibular

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30
Q

Are mandibular or maxillary incisor roots longer in proportion to their crowns

A

Mandibular

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31
Q

Widest crown of all incisors

A

Maxillary central incisors

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32
Q

Basic geometric shape of max central incisors

A

Trapezoidal

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33
Q

Perikymata/imbrication lines

A

Small lines parallel to incisal edge that are formed due to the arrangement of the enamel prisms

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34
Q

Mesial marginal ridge on max central incisors is ____ than distal marginal ridge

A

Longer

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35
Q

Cingulum on max central incisors is offset to the ____ to allow room for ____

A

Distal, incisal papilla

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36
Q

Labial outline on max central incisors is ______, lingual outline is _____ convex (from Incisal view)

A

Slightly convex, more

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37
Q

The incisal edge lies ___ or _____ to the root axis line on max central incisors (proximal view)

A

On, facial

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38
Q

CEJ on mesial of max central incisors exhibits …

A

The greatest depth of curvature compared to any tooth surface in the mouth

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39
Q

Maxillary lateral incisors (permanent) displays _____ variation than any other permanent tooth except ______

A

Greater, third molars

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40
Q

What is the difference between maxillary central and lateral incisors (permanent)

A

Basically the same in all aspects but SMALLER in scale, generally more round
Labial surface more convex than central
Narrower mesiodistally than central
More rounded mesioincisal angle than central
Mesial/distal marginal ridges more prominent than central
Lingual fossa deeper/more pronounced than central
***more variation in laterals

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41
Q

On maxillary lateral incisors, the lingual gingival groove (fissure) may …

A

Cross cingulum onto cementum

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42
Q

Are max central or lateral incisors more caries prone? Why?

A

Laterals, more likely to find pits and grooves near cingulum

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43
Q

The cingulum on the lateral max incisors is ____

A

Nearly centered mesiodistally

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44
Q

Are lateral or central max incisors more convex labially?

A

Lateral

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45
Q

Simple and least variable teeth

A

Mandibular incisors

46
Q

Smallest category of permanent teeth

A

Mandibular incisors

47
Q

Are maxillary central incisor or mand central incisor crowns longer incisocervically?
Wider mesiodistally?

A

Mandibular, maxillary

48
Q

Mandibular central incisors have the ____ crown size of any tooth and their crowns are

A

Smallest, symmetrical

49
Q

Mesioincisal angle on mand central incisors is ____compared to other incisors

A

Quite sharp

50
Q

The lingual surface of mandibular central incisors are _______ and have only _____ concavity, ______ marginal ridges, and _____ cingulum

A

Relatively smooth, slight, indistinct, small

51
Q

The facial surface of mandibular central incisors is _________ and the incisal edge lies _____ or ____ to the root axis line

A

Uniformly convex, on, lingual

52
Q

Mandibular central incisors are wider labiolingually or mesiodistally?

A

Labiolingually
**unlike maxillary central incisor

53
Q

Differences between mandibular lateral incisors and centrals

A

Lateral = more rounded, slightly larger
Distoincisal angle is more rounded than central because incisal edge slopes slightly gingival
Cingulum more offset to the distal on laterals
On laterals, you can see the distal incisal edge from the mesial because it turns

54
Q

Contact points on the mandibular incisors are in the ____ third

A

Incisal

55
Q

On mandibular lateral incisors, the incisal edge curves toward the _____, and the cingulum is displaced toward the ____

A

Lingual, distal
These factors give the town the appearance of being slightly twisted on its root

56
Q

Incisor shape recap:

A

Mesioincisal angle is more square, distoincisal angle more rounded
From a f/l view, all teeth have crown shaped like a trapezoid with the short side gingival
From a proximal view, anterior teeth have crown shaped like a triangle or wedge

57
Q

Incisal edges of maxillary teeth are ___ to the incisal edges of mandibular teeth

A

Labial

58
Q

Normal overjet on incisors

A

Maxillary incisal edge lines up with facial surface height of contour of mandibular teeth
**can draw a vertical line from max incisal edge to facial surface

59
Q

Normal overbite on incisors

A

The incisal edges of mandibular incisors are hidden from view by the overlapping maxillary incisors
**incisal third of max covers incisal third of mand

60
Q

Facial embrasure narrower than lingual embrasure on all teeth except _______ and between ________ centrals

A

Maxillary first molar, mandibular

61
Q

The cingulum is distal on the ____, _____, ____

A

Max central, mand lateral, mand canine

62
Q

Cingulum is centered on the ____, _____, ____

A

Max lateral, max canine, mand central

63
Q

Which is the only tooth with a cross section through CEJ that appears triangular ?

A

Maxillary central incisors

64
Q

Largest to smallest incisal embrasure (anteriors)

A

Max canine& lat , mand canine & lat , Max lateral & central , max centrals, mand lat & cent , mand centrals

65
Q

First succedaneous teeth

A

Mandibular central incisors

66
Q

The incisal edge of mandibular central incisors is ____ to long axis of tooth

A

Lingual

67
Q

Numbers for maxillary canines

A

6, 11

68
Q

Numbers for mandibular canines

A

22, 27

69
Q

Functions of canines

A

Support lips and facial muscles
To cut, pierce, or shear food morsels
Provides a protective mechanism when the max and mand canines overlap when the mandible moves either side relieving posterior teeth (canine guidance)

70
Q

Canine guidance

A

A type of occlusion that occurs when max and mand canines make contact during lateral mandibular movements, causing the posterior teeth to disocclude

71
Q

Canines are the _____ of the permanent teeth

A

Longest

72
Q

Canine position

A

3rd tooth from midline
**corners of mouth

73
Q

Canines are frequently the ____ teeth to be lost due to dental diseases

A

Last

74
Q

Canines, because of their ____, _____ roots are ___anchor teeth to attach replacements for lost teeth

A

Large, long , good

75
Q

Morphology of canines

A

Cervical line
Cingulum
Distal marginal ridge
Mesial marginal ridge
Distal lingual fossa
Mesial lingual fossa
Lingual ridge
Distal cusp ridge
Mesial cusp ridge

76
Q

The mandibular canine crown is _____ than the maxillary canine crown even though the maxillary canine is the ______ tooth

A

Longer, longest

77
Q

Only teeth with labial ridges

A

Canines

78
Q

The measurement of a maxillary or mandibular canine crown is greater __________ than it is __________

A

Labiolingually, mesiodistally

79
Q

The distal contact areas on canines are more ______ than the mesial contact areas

A

Cervical

80
Q

Canine eminence

A

Special projection of bone that houses the long, thick root of the canine
Anterior to canine eminence is the incisal fossa and posterior to the canine eminence lies the canine fossa
***the prominence on the labial aspect of the maxilla overlying the root of the canine tooth

81
Q

Mesial contact on maxillary canine LOCATION

A

At the junction of the incisal and middle third

82
Q

Distal contact on maxillary canine location

A

Middle third of the crown

83
Q

The cusp and cusp ridges on maxillary canines make up ______ of the cervicoincisal length of the crown

A

1/3

84
Q

Labial ridge on max canine is mostly made up by the

A

Middle labial lobe

85
Q

The cingulum on the max canine is

A

Centered mesiodistally

86
Q

The lingual ridge on max canines…

A

Separates the mesial and distal fossae

87
Q

On max canines, is the mesial marginal ridge or distal marginal ridge longer?

A

Mesial

88
Q

The cusp tip on max canines is ____ to the root axis line (prox view)

A

Labial

89
Q

The root on maxillary canines is very ______ faciolingually in the ______third and even more so in the ______ third
The root also has depressions on which surfaces?

A

Broad, cervical, middle
Mesial and distal

90
Q

The incisal edge on maxillary incisors and canines can never be ____ to the root axis line

A

Lingual

91
Q

Is the max canine wider labiolingually or mesiodistally?

A

Labiolingually (only slightly)

92
Q

The mandibular canine crown is ____ and ___ than max canine crown

A

Longer, narrower

93
Q

The cusp and cusp ridges on the mandibular canine make up ____ of the cervicoinsical length of the crown

A

1/5

94
Q

The mesial side of the mandibular canine is ____ in relation to the mesial side of root
The mesial side of the tooth is curved or flat?

A

In line
Flat

95
Q

The cingulum on the mandibular canine lies ____ to the root axis line

A

Distal

96
Q

Mandibular canine from a lingual view - what do we notice?

A

Ridges and fossae are not prominent

97
Q

Mesial contacts on the mand canines are located in the ____ third

A

Incisal

98
Q

Distal contacts on the mandibular canines are located ?

A

Junction of the incisal/middle third

99
Q

On mandibular canines, the incisal ridge(cusp tip) lies ____ to the root axis line (proximal view)

A

Lingual

100
Q

Mandibular canines have ____ crown and root bulge on the facial meaning they have almost ______

A

Minimal, continuous crown-root convexity

101
Q

Are mandibular canines wider labiolingually or mesiodistally? Is it significant?

A

Labiolingual dimension is NOTICEABLY larger than

102
Q

Are mandibular canines wider labiolingually or mesiodistally? Is it significant?

A

Labiolingual dimension is NOTICEABLY larger than

103
Q

Is the overall anatomy of the max or mand canine more obvious ?

A

Max canine is more obvious

104
Q

For mandibular incisors & canines, the incisal edge/cusp tip is never _____ to the root axis line

A

Labial

105
Q

Top three longest crowns in mouth

A

Mandibular canine, maxillary central, maxillary canine

106
Q

Tooth with the longest root in the mouth

A

Maxillary canine
**think of the canine eminence

107
Q

Widest anterior tooth faciolingually

A

Maxillary canine

108
Q

Is the mesial cusp slope longer or shorter than the distal cusp slope (facial side) on maxillary canines

A

Shorter

109
Q

Longest tooth and root in the mouth

A

Maxillary canine

110
Q

2nd longest tooth and root

A

Mandibular canine

111
Q

Which anterior tooth could most likely have two roots (bifurcation) ?

A

Mandibular canine

112
Q

Only anterior tooth that has mesial inclination of root (can also be distal)

A

Mandibular canine

Restorative Dentistry (11 decks)

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