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mandibular incisor Flashcards

1
Q

covered by enamel vs covered by cemenum

A

anatomic crown vs. anatomic root

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2
Q

The portion of a tooth that is above the gingival margin.

A

Clinical Crown

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3
Q

Narrowest and shortest of all permanent teeth

A

Mandibular Central Incisor

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4
Q

Mandibular Central Incisor

A

Crown to root ratio approaching one to one

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5
Q

single canal from crown to apex

A

type 1 vertuccir

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6
Q

pulp separates in two near the crown and joins back together at apex to form one root canal

A

type 2 vertucci classification

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7
Q

root separate into 2 distinct canals and extends to root apex separately

A

type 4 vertucci

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8
Q

starts as one root canal in pulp chamber and divides into 2 as it reaches apical foramen

A

type 3 vertucci

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9
Q

slightly larger in all dimensions than central incisor and not bilaterally symmetric

A

Mandibular Lateral Incisor

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10
Q

Crown is bilaterally symmetrical (mesial and distal halves are almost identical)

A

Mandibular Central Incisor

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11
Q

tf Mandibular Central Incisor

dont have mamelon

A

f

Mamelons when newly erupted

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12
Q

Mandibular Central Incisor

Incisal edge straight; —– to long axis of tooth

A

Incisal edge straight; perpendicular to long axis of tooth

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13
Q

tf Mandibular Central Incisor;

round MI and DI angles

A

Sharp MI and DI angles (~90°)

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14
Q

tf Mandibular Central Incisor

Facial surface quite rough

A

F

Facial surface quite smooth

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15
Q

correct the statement

Mandibular Central Incisor Root long , straight, spherical, very wide mesiodistally

A

Mandibular Central Incisor Root short, straight, conical, very narrow mesiodistally

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16
Q

Relatively smooth lingual aspect of Mandibular Central Incisor

A

T

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17
Q

Mandibular Central Incisor–>

Crown tapers to the lingual on lingual surface

(not root)

A

T

Mandibular Central Incisor–>

Crown tapers to the lingual (not root)

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18
Q
A
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19
Q

max incisors have Less prominent cingulum, marginal ridges, and lingual fossa than Mandibular Central Incisor

A

F

Mandibular Central Incisor have

Less prominent cingulum, marginal ridges, and lingual fossa than maxillary incisors

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20
Q

Mandibular Central Incisor;

Incisal edge slightly lingual to bisecting line(mesial aspect)

A

T

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21
Q

Maxillary Central Incisor

A

triangular or wedge shaped

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22
Q

tf Mandibular Central Incisor

have Pronounced CEJ line (less than maxillary central)

A

t

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23
Q

S – shaped on lingual (slightly convex cingulum; slightly concave fossa)

A

Mandibular Central Incisor

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24
Q

Root broad faciolingually

A

Mandibular Central Incisor

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25
Mandibular Central Incisor distal aspect
CEJ less pronounced than mesial
26
Incisal edge straight and slightly lingual to center
Mandibular Central Incisor
27
Incisal edge perpendicular to faciolingual bisecting line
Mandibular Central Incisor
28
tf mandib. facial incisor is Wider mesiodistally than faciolingually
f Wider faciolingually than mesiodistally
29
tf central mandib incisor have a trapezoidal shape
f Roughly triangular crown outline form
30
tf Mandibular Central Incisor Cingulum centered but may be slightly offset distally
T
31
Mesial and distal portions symmetrical
Mandibular Central Incisor incisal view
32
Single, short, and straight
root of Mandibular Central Incisor
33
Narrow mesiodistally Broad faciolingually
root of Mandibular Central Incisor
34
narrow, elongated ribbon shaped pulp
Cervical cross-section of Mandibular Central Incisor
35
tf Mandibular Central Incisor have only one pulp canal
f Often two pulp canals | (one facial, one lingual)
36
Hour glass shape
Mandibular Central Incisor
37
Mandibular Central Incisor
Narrow mesiodistally Broad faciolingually
38
tf Mandibular Central Incisor only have mesial root concavities
f Mandibular Central Incisor Usually mesial and distal root concavities
39
facial and lingual pulp canal
Mandibular Central Incisor
40
Erupts at age 7-8
Mandibular Lateral Incisor
41
tf Mandibular Lateral Incisor isnt bilat symmtericall
T
42
Tf Mandib. Central incisors slightly larger in all dimensions than Mandibular Lateral Incisor
f Mandibular Lateral Incisor slightly larger in all dimensions
43
facial aspect of Mandibular Lateral Incisor
Incisal edge slopes gingivally toward distal
44
tf Mandibular Lateral Incisor MI angle slightly more rounded than DI angle
Mandibular Lateral Incisor DI angle slightly more rounded than MI angle
45
tf Mandibular Lateral Incisor(facial view) Mesial outline straighter than distal outline
T
46
tf Root apex may curve mesially in Mandibular Lateral Incisor
f distally
47
Facial surface smooth and flat in the incisal 2/3
Mandibular Lateral Incisor
48
smooth surface lingual anatomy
Mandibular Lateral and central Incisor
49
Cingulum is slightly distal to the center of the crown
Mandibular Lateral Incisor
50
Crown tapers towards lingual
Mandibular Lateral Incisor
51
tf in Mandibular Lateral Incisor Distal marginal ridge is slightly shorter than mesial marginal ridge due to slope
t
52
CEJ line less pronounced
Mandibular Lateral Incisor\< central incisor
53
facial HOC and lingual HOC in cervical third
mandibular lateral and central incisor
54
incisal edge lingual to bisecting line(mesial aspect)
mandib. central and lat incisor
55
root broad faciolingually and concavity present on mesial surface
mandib lateral incisor
56
CEJ line less curved than mesial
Mandibular Lateral Incisor | (distal view)
57
distal surface is shorter incisogingivally than mesial surface
Mandibular Lateral Incisor
58
Mandibular Lateral Incisor
crown is “twisted”
59
More of incisal ridge and facial surface shows from distal aspect
on Mandibular Lateral Incisor
60
deep concavity on distal surface
Mandibular Lateral Incisor
61
Root short, straight, conical, very narrow mesiodistally
Mandibular Central and lateral Incisor
62
Crown appears as if twisted at its base
Mandibular Lateral Incisor(incisal view)
63
tf Mandibular Lateral Incisor Incisal edge not perpendicular to faciolingual bisecting line;
F Incisal edge not perpendicular to faciolingual bisecting line;
64
distal aspect of incisal edge more lingually positioned in
Mandibular Lateral Incisor
65
Mandibular Lateral Incisor
Cingulum more noticeably displaced toward the distal
66
central incisor root; may incline distally
root of Mandibular Lateral Incisor
67
May have shallower root concavities on mesial and distal
Mandibular Lateral Incisor
68
Mandibular Lateral Incisor cervical cross section
longer faciolingualy than distal mesially
69

dental anatomy (12 decks)

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