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Tim's Cards > Dental Anatomy II > Flashcards

Dental Anatomy II Flashcards

1
Q

How many lobes of calcification do the Primary Maxillary Incisors arise from?

A

1

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2
Q

What features do Primary Maxillary Incisors lack?

A

Mamelons

Developmental depressions

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3
Q

Name 2 ways the Primary Maxillary Central Incisor differs from Lateral (aside from root differences).

A

Larger

More angular

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4
Q

Name 2 ways the Primary Maxillary Central Incisor differs from the Lateral in the root?

A

No curvature
Blunt Apex

(Lateral Apex - pointed)

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5
Q

T/F

Mesiodistal length > Cervicoincisal length in Primary Mandibular Incisors

A

False

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6
Q

Describe the incisal ridge for Primary Mandibular Incisors

A

Straight

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7
Q

In what teeth are the normal Proximoincisal angles reversed?

A

Primary Mandibular Incisors

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8
Q

T/F

Proximal contacts taper evenly in Primary Mandibular Incisors

A

True

*very symmetrical from Facial View

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9
Q

How much larger is the root than crown in Primary Mandibular Incisors?

A

2x

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10
Q

From what angle are all 3 roots visible for the Primary Maxillary 1st Molar?

A

Distal

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11
Q

In the Primary Maxillary 1st Molar, which is the shortest root?
Smallest (shortest) Cusp?

A

Distofacial

Distolingual

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12
Q

In the Primary Maxillary 1st Molar, everything
(cervical convexity, distal marginal ridge, distal marginal ridge groove)
is small, Except?

A

Root Trunk

*distance from CEJ to furcation

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13
Q

T/F

From the Distal view, the cervical line is straight in the Primary Maxillary First Molar.

A

False

*curves up Facially

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14
Q

Starting with the largest, name the 5 cusps of the Primary Maxillary 2nd Molar.

A 
Mesiolingual
Mesiofacial
Distofacial
Distolingual
Carabelli (5th)
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15
Q

The distal convergence in the Primary Maxillary Second Molar suggests what shape?

A

Rhomboidal

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16
Q

What are 2 very prominent topographical features of the Primary Maxillary Second Molar?

A

Marginal Ridges

Oblique Ridge

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17
Q

Compared to the Oblique Ridge, where is the Transverse Ridge located in the Primary Maxillary 2nd Molar?

A

Mesially

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18
Q

What are the major and minor fossae of the Primary Maxillary 2nd Molar?

A

Major: Central and Distal

Minor: Mesial Triangular and Distal Triangular

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19
Q

Another name for the Distal Oblique Groove in the Primary Maxillary 2nd Molar.

A

Lingual Developmental Groove

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20
Q

What crosses the Oblique Ridge in the Primary Maxillary 2nd Molar?
What 2 features does it connect?

A

Transverse Groove

Central and Distal pits

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21
Q

How many Cusps and Roots are visible from the distal view of the Primary Mandibular 1st Molar?

A

4 cusps
2 roots

*all

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22
Q

How is the Distofacial Cusp positioned in relation to the Mesiofacial Cusp in the Primary Mandibular First Molar?

A

Lingually

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23
Q

T/F

The Primary Mandibular 1st Molar has a straight cervical line

A

False

*curved

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24
Q

T/F

The Distal Root converges to the apex in the Primary Mandibular 1st Molar

A

True

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25
Q

Where is the Developmental Root Surface Depression in the Primary Mandibular 1st Molar?

A

Distal

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26
Q

What tooth appears to be 2 different teeth fused?

A

Primary Mandibular 1st Molar

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27
Q

The mesial surface outline of the crown (from the facial view) of the Primary Mandibular 1st Molar looks like what?

A

Flat

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28
Q

Where are the Proximal contact points for the Primary Mandibular 1st Molar?

A

Middle 1/3, Occlusal portion

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29
Q

Describe the Facial Developmental Groove in the Primary mandibular 1st Molar?

A

Short

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30
Q

Where does the Cervical Line dip from the facial view of the Primary Mandibular 1st Molar?

A

Mesial half

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31
Q

Describe the Cervical Ridge of the Primary Mandibular 1st Molar.

A

Convex mesially, then fades

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32
Q

In what tooth is the Mesial Root longer and straighter than the distal?

A

Primary Mandibular 1st Molar

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33
Q

How much bigger is the crown and root in the Primary Mandibular 1st Molar?

A

20% taller crown

1/3 longer root

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34
Q

What tooth has a rectangular crown outline?

A

Primary Mandibular 2nd Molar

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35
Q

What tooth resembles the Permanent Mandibular 1st Molar?

A

Primary Mandibular 2nd Molar

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36
Q

2 convergences of the Primary Mandibular Second Molar:

A

Lingual

Distal

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37
Q

What cusps of the Primary Mandibular Second Molar are nearly equal in size?

A

3 facial

2 lingual

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38
Q

The Primary Mandibular 2nd Molar has a long and windy…

A

Central Developmental Groove

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39
Q

Describe the marginal ridge grooves in the Primary Mandibular 2nd Molar:

A

Distinct mesially

Notch distally

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40
Q

What separates the 3 facial cusps and 2 lingual cusps of the Primary Mandibular 2nd Molar?

A

Mesiofacial/Distofacial grooves

Lingual groove

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41
Q

What are the 3 major fossae of the Primary Mandibular 2nd Molar?

A

Central
Mesia triangular
Distal triangular

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42
Q

Why are there no Transverse Ridges in the Primary Mandibular 2nd Molar?

A

No triangular ridges (of which there are many) meet

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43
Q

Name 2 Root Anomalies

A

Pyramidism
(roots fused)

Taurodontism
(pulp chamber enlarged, bull horns)

44
Q

What root anomaly only occurs in permanent teeth?

A

Taurodontism

45
Q

T/F

Floor of the pulp is lower in both Taurodontism and Pyramidism

A

True

46
Q

What makes up an Enamel Pearl?

A

Enamel nodule

Dentin core

47
Q

Where are enamel pearls usually found?

A

Molars

anything with multiple roots

48
Q

How do enamel pearls appear radiographically?

A

Radiopaque

and small, round

49
Q

In what 2 locations are enamel pearls mostly found?

A

Distal of 3rd molars

Facial root furcation molars

50
Q

What are extensions of the crown onto the root surface between roots called?

A

Enamel projections

51
Q

In what teeth is Dens-in-Dente found?

2 things

A

Permanent

Maxillary Lateral Incisors

52
Q

Enamel invagination occurs in what condition?

A

Dens-in-Dente

53
Q

An infolding of dental papilla during development can lead to…

A

Dens-in-Dente

54
Q

What feature is found on newly erupted Maxillary incisors?

A

Mamelons

55
Q

Where are the marginal ridges found in Maxillary Incisors?

A

Mesial and Distal borders of Lingual surfaces

56
Q

Maxillary Central Incisor
Mesodistal Width:
Faciolingual Diameter:

A
  1. 5 mm

7. 0 mm

57
Q

Where is the interproximal contact for Maxillary Central Incisors?

A

Centered facio-lingually

Incisal 1/3

58
Q

The mesiodistal bisecting plane is _____ to the incisal edge

Maxillary central Incisor

A

perpendicular

59
Q

The faciolingual bisecting plane is _____ to the incisal edge
(Maxillary central incisor)

A

parallel

60
Q

T/F

The marginal ridges and cingulum are more prominent in lateral incisors

A

True

61
Q

Compare the lingual fossa in the Central and Lateral Maxillary insisors

A

Central: trapezoidal, moderately deep

Lateral: triangular, deep

62
Q

The outline of the Central Incisor is ____ from the incisal view
The outline of the Lateral Incisor is _____ from the incisal view

A

Triangular

Ovoid

63
Q

T/F
The Central Incisor is larger and more angular than the Lateral.
(maxillary)

A

True

64
Q

In what direction is the lateral incisor root pointed?

A

Distal

65
Q

What exhibits more variation, central or lateral incisor?

A

Lateral

*one of most variable permanent teeth

66
Q

What are 3 similarities of the Central and Lateral Incisors?

A

Cingulum offset distally
Centered faciolingual contact (incisal view)
Incisal edge centered over CEJ and Roots

67
Q

What incisor has a lingual pit?

A

Lateral Maxillary

68
Q

Where is the incisal ridge of the Mandibular Central?

A

slightly lingual

69
Q

What shape is the lingual fossa of the Mandibular Central Incisors?

A

Trapezoidal

70
Q

What is the narrowest tooth mesiodistally?

A

Mandibular Central incisors

71
Q

Incisal line angles of Mandibular central incisors are much more squared than Maxillary

A

True

72
Q

What tooth crown is considered bilaterally symmetrical?

A

Mandibular Central Incisors

73
Q

Where are the mesial and distal proximal contacts of the Mandibular Incisors?

A

High Incisal third

74
Q

Mandibular Central Incisor Root is _____ faciolingually and _____ mesiodistally

A

wider

narrow

75
Q

What is found on both mesial and distal root surfaces of the Mandibular central incisors?

A

Developmental depressions

*tendency for 2 canals

76
Q

T/F

Mandibular central incisor sometimes has 2 roots

A

True

77
Q

What Mandibular Incisor is smaller?

A

Central

78
Q

What Mandibular Incisor is more angular?

A

Central

79
Q

What Mandibular Incisor more often has 2 Pulp canals?

A

Lateral

80
Q

T/F

The crest of the cingulum is centered in both Mandibular Incisors

A

False

*offset Distally

81
Q

Describe the lingual surface anatomy of the Mandibular Incisors

A

Inconspicuous

82
Q

What Mandibular incisor has less embrasure?

A

Central

83
Q

T/F

Both Mandibular incisors have a lingually positioned incisal edge

A

True

84
Q

What teeth is the longest?

A

Canines

both Maxillary and Mandibular

85
Q

What tooth has the longest root?

A

Maxillary Canine

86
Q

T/F

Canines are anterior teeth

A

True

*biggest faciolingual dimensions

87
Q

What edge of a Maxillary canine appears “pinched?”

A

Distal

88
Q

T/F

Canine cusp tip is often lingual to the faciolingual bisector

A

False

  • never
  • *most often centered
89
Q

The Maxillary canine has the greatest cervical ridge prominence and greatest facial ridge prominence of any permanent anterior tooth

A

True

90
Q

How is the distal contact area positioned faciolingually and cervicoincisally in the Maxillary Canine?

A

Centered

91
Q

Where is the curvature of the cervical line of a Maxillary Canine more consistent?

A

Facial

92
Q

What tooth has the largest cingulum of the Anterior?

A

Maxillary canine

93
Q

T/F

The cingulum of the Maxillary Canine is centered

A

False

slightly distal

94
Q

Describe the lingual ridge in the Maxillary Canine

A

thick and short

95
Q

What marginal ridge is larger in the Maxillary Canine?

A

Mesial

96
Q

Describe the mesial crown and root of the Mandibular Canine

A

Straight

97
Q

Where is the cusp tip of the Mandibular Canine located?

A

Slightly mesial

98
Q

What cuspal ridge is longer in the Permanent Mandibular Canine?

A

Distal

99
Q

What two teeth have a semicircular cervical curvature?

A

Mandibular Canine

Maxillary Central Incisor

100
Q

What has the longest root length of any Mandibular tooth?

A

Mandibular Canine

101
Q

What tooth has the greatest cervicoincisal crown length?

A

Mandibular Canine

102
Q

How is the facial outline shaped from a proximal view

Mandibular Canine

A

C - shaped

103
Q

Where is the cusp tip in the Mandibular Canine in relation to the faciolingual bisector?

A

Lingual

*all mandibular anterior the same

104
Q

What are the 2 fossae of the Mandibular Canine?

A

Mesiolingual

Distolingual

105
Q

T/F

Mandibular canine anatomy is less developed than Maxillary canines

A

True

Tim's Cards (140 decks)

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