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Tim's Cards > Dental Anatomy II > Flashcards

Dental Anatomy II Flashcards

(105 cards)

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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
Where is the Developmental Root Surface Depression in the Primary Mandibular 1st Molar?
Distal
26
What tooth appears to be 2 different teeth fused?
Primary Mandibular 1st Molar
27
The mesial surface outline of the crown (from the facial view) of the Primary Mandibular 1st Molar looks like what?
Flat
28
Where are the Proximal contact points for the Primary Mandibular 1st Molar?
Middle 1/3, Occlusal portion
29
Describe the Facial Developmental Groove in the Primary mandibular 1st Molar?
Short
30
Where does the Cervical Line dip from the facial view of the Primary Mandibular 1st Molar?
Mesial half
31
Describe the Cervical Ridge of the Primary Mandibular 1st Molar.
Convex mesially, then fades
32
In what tooth is the Mesial Root longer and straighter than the distal?
Primary Mandibular 1st Molar
33
How much bigger is the crown and root in the Primary Mandibular 1st Molar?
20% taller crown | 1/3 longer root
34
What tooth has a rectangular crown outline?
Primary Mandibular 2nd Molar
35
What tooth resembles the Permanent Mandibular 1st Molar?
Primary Mandibular 2nd Molar
36
2 convergences of the Primary Mandibular Second Molar:
Lingual | Distal
37
What cusps of the Primary Mandibular Second Molar are nearly equal in size?
3 facial | 2 lingual
38
The Primary Mandibular 2nd Molar has a long and windy...
Central Developmental Groove
39
Describe the marginal ridge grooves in the Primary Mandibular 2nd Molar:
Distinct mesially Notch distally
40
What separates the 3 facial cusps and 2 lingual cusps of the Primary Mandibular 2nd Molar?
Mesiofacial/Distofacial grooves Lingual groove
41
What are the 3 major fossae of the Primary Mandibular 2nd Molar?
Central Mesia triangular Distal triangular
42
Why are there no Transverse Ridges in the Primary Mandibular 2nd Molar?
No triangular ridges (of which there are many) meet
43
Name 2 Root Anomalies
Pyramidism (roots fused) Taurodontism (pulp chamber enlarged, bull horns)
44
What root anomaly only occurs in permanent teeth?
Taurodontism
45
T/F | Floor of the pulp is lower in both Taurodontism and Pyramidism
True
46
What makes up an Enamel Pearl?
Enamel nodule | Dentin core
47
Where are enamel pearls usually found?
Molars | anything with multiple roots
48
How do enamel pearls appear radiographically?
Radiopaque | and small, round
49
In what 2 locations are enamel pearls mostly found?
Distal of 3rd molars | Facial root furcation molars
50
What are extensions of the crown onto the root surface between roots called?
Enamel projections
51
In what teeth is Dens-in-Dente found? | 2 things
Permanent | Maxillary Lateral Incisors
52
Enamel invagination occurs in what condition?
Dens-in-Dente
53
An infolding of dental papilla during development can lead to...
Dens-in-Dente
54
What feature is found on newly erupted Maxillary incisors?
Mamelons
55
Where are the marginal ridges found in Maxillary Incisors?
Mesial and Distal borders of Lingual surfaces
56
Maxillary Central Incisor Mesodistal Width: Faciolingual Diameter:
8. 5 mm | 7. 0 mm
57
Where is the interproximal contact for Maxillary Central Incisors?
Centered facio-lingually | Incisal 1/3
58
The mesiodistal bisecting plane is _____ to the incisal edge | Maxillary central Incisor
perpendicular
59
The faciolingual bisecting plane is _____ to the incisal edge (Maxillary central incisor)
parallel
60
T/F | The marginal ridges and cingulum are more prominent in lateral incisors
True
61
Compare the lingual fossa in the Central and Lateral Maxillary insisors
Central: trapezoidal, moderately deep Lateral: triangular, deep
62
The outline of the Central Incisor is ____ from the incisal view The outline of the Lateral Incisor is _____ from the incisal view
Triangular Ovoid
63
T/F The Central Incisor is larger and more angular than the Lateral. (maxillary)
True
64
In what direction is the lateral incisor root pointed?
Distal
65
What exhibits more variation, central or lateral incisor?
Lateral *one of most variable permanent teeth
66
What are 3 similarities of the Central and Lateral Incisors?
Cingulum offset distally Centered faciolingual contact (incisal view) Incisal edge centered over CEJ and Roots
67
What incisor has a lingual pit?
Lateral Maxillary
68
Where is the incisal ridge of the Mandibular Central?
slightly lingual
69
What shape is the lingual fossa of the Mandibular Central Incisors?
Trapezoidal
70
What is the narrowest tooth mesiodistally?
Mandibular Central incisors
71
Incisal line angles of Mandibular central incisors are much more squared than Maxillary
True
72
What tooth crown is considered bilaterally symmetrical?
Mandibular Central Incisors
73
Where are the mesial and distal proximal contacts of the Mandibular Incisors?
High Incisal third
74
Mandibular Central Incisor Root is _____ faciolingually and _____ mesiodistally
wider | narrow
75
What is found on both mesial and distal root surfaces of the Mandibular central incisors?
Developmental depressions *tendency for 2 canals
76
T/F | Mandibular central incisor sometimes has 2 roots
True
77
What Mandibular Incisor is smaller?
Central
78
What Mandibular Incisor is more angular?
Central
79
What Mandibular Incisor more often has 2 Pulp canals?
Lateral
80
T/F | The crest of the cingulum is centered in both Mandibular Incisors
False *offset Distally
81
Describe the lingual surface anatomy of the Mandibular Incisors
Inconspicuous
82
What Mandibular incisor has less embrasure?
Central
83
T/F | Both Mandibular incisors have a lingually positioned incisal edge
True
84
What teeth is the longest?
Canines | both Maxillary and Mandibular
85
What tooth has the longest root?
Maxillary Canine
86
T/F | Canines are anterior teeth
True *biggest faciolingual dimensions
87
What edge of a Maxillary canine appears "pinched?"
Distal
88
T/F | Canine cusp tip is often lingual to the faciolingual bisector
False * never * *most often centered
89
The Maxillary canine has the greatest cervical ridge prominence and greatest facial ridge prominence of any permanent anterior tooth
True
90
How is the distal contact area positioned faciolingually and cervicoincisally in the Maxillary Canine?
Centered
91
Where is the curvature of the cervical line of a Maxillary Canine more consistent?
Facial
92
What tooth has the largest cingulum of the Anterior?
Maxillary canine
93
T/F | The cingulum of the Maxillary Canine is centered
False slightly distal
94
Describe the lingual ridge in the Maxillary Canine
thick and short
95
What marginal ridge is larger in the Maxillary Canine?
Mesial
96
Describe the mesial crown and root of the Mandibular Canine
Straight
97
Where is the cusp tip of the Mandibular Canine located?
Slightly mesial
98
What cuspal ridge is longer in the Permanent Mandibular Canine?
Distal
99
What two teeth have a semicircular cervical curvature?
Mandibular Canine Maxillary Central Incisor
100
What has the longest root length of any Mandibular tooth?
Mandibular Canine
101
What tooth has the greatest cervicoincisal crown length?
Mandibular Canine
102
How is the facial outline shaped from a proximal view | Mandibular Canine
C - shaped
103
Where is the cusp tip in the Mandibular Canine in relation to the faciolingual bisector?
Lingual *all mandibular anterior the same
104
What are the 2 fossae of the Mandibular Canine?
Mesiolingual | Distolingual
105
T/F | Mandibular canine anatomy is less developed than Maxillary canines
True

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