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Incisors Flashcards

1
Q

in maxillary arch

A

8 and 9

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2
Q

succedaneous or non succedaneous teeth?

A

succedaneous

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3
Q

when do they erupt?

A

7-8 years

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4
Q

facial outline of the crown =

A

trapezoidal

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5
Q

facially the max central incisor size:

A

longer than it is wide

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6
Q

mesial outline of max central incisor is

A

relatively straight/slightly convex

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7
Q

height of convexity of mesial surface of max central incisor is where

A

at incisal 1/3

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8
Q

contacts of central maxillary incisor

A

mesial: middle of incisal 1/3
distal: at the line of incisal and middle 1/3

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9
Q

the mesioincisal angle of max central incisor=

A

right angle

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10
Q

the disoincisal angle of max central incisor=

A

more rounded

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11
Q

CEJ of max central incisor=

A

curves apically

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12
Q

Labial developmental depressions and ridges of max central incisor

A

are slightly elevated areas on labial surface

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13
Q

root of max central incisor

A

only one, longer than the crown, has a blunt apex

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14
Q

what was does the apex of root for max central incisor

A

it is slightly distal to the long axis of the tooth

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15
Q

max central incisor lingual fossa

A

bounded by the incisal edge, mesial and distal marginal ridges, and cingulum.

Sometimes have lingual pit

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16
Q

how is the max central incisor lingual aspect CEJ curved

A

curved convex towards the root

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17
Q

facial, incisal and lingual shape on the max central incisor mesial aspect

A

triangular,
facial-outline is slightly curved
incisally- flat, edge lies on the line, and slopes towards the lingual
lingual- outline is concavo-convex

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18
Q

CEJ on max central incisor

A

has the greatest curvature of any tooth in the mouth. It convexs incisally

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19
Q

max central incisor distal aspect

A

similar to mesial EXCEPT crown is thicker in incisal 1/3 and CEJ curvature is less

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20
Q

facial, incisal and lingual on max central incisor incisal aspect

A

triangular in shape
wider facially than lingually
facial is broad and flat
lingual is narrower and curved

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21
Q

apex of cingulum on max central incisor

A

slightly distal to the center of the tooth

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22
Q

max central incisor MF and DF line angles comparison

A

DF: is more rounded than MF line angle

MF and DF are more prominent than ML and DL line angles

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23
Q

General characteristics of max central incisor

A

Crown: longer than wide
Root: longer than crown
Crown: wider MD than FL

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24
Q

How many developmental lobes does max central incisor have

A

4: mesial, distal, lingual and labial lobe.
Mesial- marginal ridges and mesial part of labial surface
Distal- distal marginal ridge and part of labial surface
Labial- slightly prominent ridge
Lingual-cingulum

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25
max central incisor mamelons
are the terminations of the 3 labial lobes, disappear over time
26
max central incisor pulp
single canal, facially can see 3 pulp horns
27
cross section view of max central incisor pulp
triangular, has mesial wall longer than distal
28
max lateral incisor #
7 and 10
29
max lateral incisor eruption
8-9 years of age
30
which tooth varies in form more than others
max lateral incisor, exception is the 3rd molars since some don't even have them
31
which tooth is the most congenitally absent anterior tooth?
max lateral incisor
32
general characteristics of max lateral incisor
similar in shape to maxillary central incisor but 1. are smaller in dimensions BUT the roots. 2. angels more rounded 3. more pronounced lingual surface with a deeper lingual fossa
33
mesial height of contour of max lateral incisor
at the line of middle and incisal 1/3s
34
distal height of contour of max lateral incisor
in the middle of the middle 1/3
35
MI and DI angles of max lateral incisor
DI angle is more rounded than MI but both are more rounded than central max incisor
36
root of max lateral incisor
as long as the central incisor and slightly distal
37
labial surface of max lateral incisor
is more convex than the central incisor
38
lingual surface of max lateral incisor
lingual fossa often with a lingual pit, deeper than the central max incisor, pronounced cingulum
39
incisal, lingual and labial on mesial surface of max lateral incisor
triangular in outline labial-slightly convex lingual- concavo-convex incisal- angled lingually
40
height of contour on facial and lingual surfaces of max lateral incisor
in the cervical 1/3
41
distal aspect of max lateral incisor
triangular, appears wider than mesial view it is curved lingually to match arch shape CEJ curvature less than mesial MAY have developmental groove on crown extending down the root
42
incisal aspect of max lateral incisor
shape more oval DL and ML both rounded than central, but DL more rounded than ML contacts are centered labiolingually
43
cingulum of max lateral incisor
slightly distal to the center of tooth
44
max lateral incisor pulp
single canal, has 2 pulp horns
45
max lateral incisor pulp cross section
may be triangular, round or ovoid
46
mand central incisor #s
24 and 25
47
mand lateral incisor #s
23 and 26
48
general characteristics of mand central incisor
the smallest tooth, central mand is smaller than the lateral mand (reverse of the maxillary arch)
49
BL and MD of mand central incisor
broader buccolingually (BL) than mesiodistally (MD)
50
mand central incisor facial view
shape trapezoidal incisal outline is straight 2x longer (IG) than wide (MD)
51
MI and DI angels of mand central incisor
they are both right angles
52
what is the smallest tooth of the mouth
mand central incisor
53
what is the only symmetrical tooth in the mouth?
mand central incisor
54
facial view of mand central incisor
contacts are on the same level in the incisal 1/3 | but distal contact is more cervically than mesial but still in the incisal 1/3
55
mand central incisor crown and root relation
crown is shorter than the root
56
root of mand central incisor
single root, curves distally in some cases | may. have some developmental depression along length
57
mand central incisor lingual view
shape trapezoidal | no distinct lingual fossa, NO developmental grooves
58
cingulum of mand central incisor
less distinct than the maxillary incisors
59
labial, incisal and lingual on mesial view of mand central incisor
triangular in shape labial-curved (convex) incisal edge- lies lingual to line bisecting the tooth CEJ curves more than distal
60
height of contour of the labial surface of mand central incisor
cervical 1/3
61
worn mand central incisor incisal edges angles
will be facial, since against maxillary incisor
62
cervical line of mand central incisor
it is 1mm more apically on the lingual than the labial
63
mand central incisor distal view
cervical lines curves incisally 1mm less than on the mesial | developmental depression on distal of root is greater than on the mesial
64
mand central incisor incisal view
mesial half and distal half are almost identical incisal edge is more ligual from the center of the tooth
65
MD widths of mand central incisor
MD width of the labial surface is wider than the MD of the lingual surface
66
pulp of mand central incisor
one pulp canal (40% of time have 2 canals) broader FL than MD developmental depressions that go down the root mesial and distal are seen on pulp cross-section
67
mand central incisor developmental depression
goes along the mesial and distal sides of the root and pulp distal is deeper than mesial
68
mand lateral incisor general characteristics
larger than the central incisor | not as symmetrical as the central incisor
69
mand lateral incisor crown height
distal crown height is shorter than the mesial height incisal edge slopes downward
70
angles of mand lateral incisor
mesioincisial angle is sharp right angle, distoincisal angle is rounded
71
mand lateral incisor facial view
Lateral is wider MD than central.. the extra width appears to be added to the distal side than mesial
72
mand lateral incisor contacts
are in the incisal 1/3, the distal contact is more cervical than mesial
73
mand lateral incisor lateral incisor
same as the lingual surface of mand central incisor
74
mand lateral incisor distal view
pretty similar to the mesial view only difference is that distal aspect is twisted lingually. you cannot see lingual surface from the distal view distal developmental depression is more marked than the mesial
75
incisal view on mand lateral incisor
incisal edge is lingual to the center of the tooth tooth is NOT symmetrical because it curves DF line angle is more lingual
76
mand lateral incisor root
root is ovoid/round similar to central incisor but slightly larger depression on the distal is deeper than in central
77
mand lateral incisor pulp
one pulp canal (40% of the time)

Morphology (5 decks)

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