Maxillary Incisors Flashcards
1
Q
maxillary central incisors are used to
A
cut or incise food
2
Q
shape of maxillary incisors
A
shovel
3
Q
maxillary incisors are — teeth
A
succedaneous
4
Q
maxillary teeth erupt at
A
7-8 years of age
5
Q
the crown is — in outline
A
trapezoidal
6
Q
the crown is – to – mm long (I-G) at the highest point on the CEJ to the incisal edge
A
10-11 mm
7
Q
the crown is - to - mm wide (M-D) at the contact areas- points of greatest curvature
A
8-9 mm
8
Q
is the anatomical crown longer or wider?
A
longer than it is wide
9
Q
mesiodistal dimension at the CEJ is approximately - mm narrower
A
2 mm
6-7 mm
10
Q
mesial outline of the tooth is relatively
A
straight or only slightly convex
11
Q
hight of the convexity of the mesial surface is in the incised – of the tooth
A
1/3rd
12
Q
height of convexity/contour is the point of greatest
A
convexity on a tooth surface
13
Q
mesial contact area is in the incised – of the tooth
A
1/3rd
14
Q
contact area
A
where the tooth touches another tooth
occurs at the mesial/distal height of contour
15
Q
the distal outline is more — than the mesial outline
A
convex
16
Q
height of contour or crest of the curvature on the distal is at the
A
junction of the middle and incised 1/3rds
17
Q
the incisal outline is
A
straight
18
Q
newly erupted teeth have
A
mamelons
19
Q
mamelon
A
one of the 3 rounded protuberances found on the incisal edges of newly erupted incisors
-generally wear away with time to give a flat incisal edge
20
Q
the mesioincisal angle is a
A
right angle
21
Q
the distoincisal angle is more — than the mesioincisal angle
A
rounded
22
Q
line angle
A
junction of two tooth surfaces
23
Q
point angle
A
junction of three tooth surfaces
24
Q
the vertical line or CEJ is curved toward the
A
root apex (apically)
25
labial developmental -- and --
depressions and ridges
26
shape of the root
cone shaped, single root
27
the root is -- mm long
```
13 mm
(root is usually longer than the crown)
```
28
the apex of the root is slightly to the -- of the long axis of the tooth
distal
29
long axis
a line extending through the center of an object lengthwise
30
shape of maxillary incisor form the lingual
trapezoidal
31
ridge
a linear elevation on the surface of a toot hand is named according to location
32
the lingual of the maxillary incisor has two ridges
media land distal marginal ridges
33
the lingual fossa is bounded by the
incisal edge, mesial and distal marginal ridges, and cingulum
34
cingulum
bulbous convexity on the cervical third of the lingual surface on an anterior tooth
35
pit
a small pinpoint depression in the depths of developmental processes
36
from the lingual aspect, the root is -- shaped
cone
37
the root tapers toward the --- slightly
distal
38
the crown and root are tapered to the
lingual
39
CEJ is curved --- toward the root
convex
40
maxillary central incisor shape from the mesial aspect
triangular or wedge shaped
| based in cervical area and apex at the incisal edge
41
the facial outline is
slightly curved
| flat incisally
42
lingual outline is
concave-convex
43
the tooth is bisected
longitudinally
the incisal edge lies on the line
the incisal edge may be lingual to the line, but rarely facial to this line
44
the incisal surface slopes toward the
lingual
45
root is --- shaped
cone
46
apex is
blunted
47
what has the greatest amount of curvature of any tooth in the mouth?
the mesial incisal line
48
the cervical line is curved toward the
incisal
| convex incisally
49
mesial curvature is --- than the distal aspect
greater
50
the distal aspect is similar to the mesial aspect except the crown looks thicker at the
incisal 1/3
51
the distal aspect is similar to the mesial aspect except the curvature of the cervical line or CEJ is -- than in the mesial
less
| still curves convexly in an incisal direction
52
the incisal aspect is --- in shape
triangular
tooth is wider facially than lingullary
facial surface is broad and flat
lingual surface is narrower and curved
53
inscisal edge bisects the
faciolingual diameter
54
the point of convexity of the cingulum
distal to the center of the lingual surface
55
mesial and distal contact points center on the proximal surfaces
labiolingually
56
proximal surface
the surface of a tooth that adjoins the surface of another tooth in the same arch
(ex. mesial and distal surfaces of adjacent teeth)
57
MF and DF line angles are more prominent than
ML and DL line angles
58
line angle
where 2 surfaces join
59
DF line angle is the more obtuse/rounded than the
MF line angle
60
development depressions and ridges seen on
labial surface
61
crown length of the maxillary central incisor
10-11 mm
62
crown width (MD) of the maxillary central incisor
8.5 mm
63
labiolingual width of the maxillary central incisor
7 mm
64
tooth length of the maxillary central incisor
13 mm
65
the crown is
longer than it is wide
66
the root is
longer than the crown
67
the crown is wider
medisodistally then faciolingually
68
mesial lobe
mesial marginal ridge and mesial part of the labial surface
69
distal lobe
distal marginal ridge and vital part of the labial surface
70
libial lobe
slightly prominent ridge
71
lingual lobe
forms the cingulum
72
mesiofacial and distofacial developmental depressions mark
junctions of lobes
73
tmamelons are the rounded terminations of the
3 labial lobes
74
pulp of the maxillary central incisor
single canal
75
facial view of the pulp
pulp chamber with three pulp horns
| pulp horns disappear as patient ages
76
cross sectional view of the pulp
triangular in view
mesial, diistal, and facial wall
mesial wall is longer than the distal
77
maxillary lateral incisors erupt at
8-9 years of age
78
maxillary lateral incisors function to
supplement the central incisors
79
which tooth varies in form more than any other tooth in the mouth?
the maxillary lateral incisor
exception: the third molars
ex. peg shaped laterals, dens in dente, twisted roots, etc
80
which tooth is the most frequently congenitally absent anterior tooth?
the maxillary lateral incisor
| third molars are the more recently congenitally absent tooth
81
compared to the maxillary central incisors, the maxillary lateral incisors are
smaller in all dimensions, except tooth length
more rounded
more pronounced mesial and distal marginal ridges (lingual surface)
lingual fossa is deeper
82
the facial aspect of the maxillary lateral incisor
smaller in all dimensions than the maxillary central incisor (by approx 2 mm)
83
shape of the facial aspect of the maxillary lateral incisor
trapezoidal
84
the facial aspect of the incisal outline is more
rounded
85
the facial aspect of the mesial outline is slightly
convex
86
the mesial height of contour is at at the junction of the
middle and incisal 1/3rds
87
mesioincisal angle is a slightly
rounded angle
88
distal outline is more --- than the central
rounded
89
distal height of counter in the
middle 1/3rd
90
distoincisal angle is more rounded than
MI
91
DI angle is more --- than the DI angle in the central incisor
rounded
92
labial surface is more --- than the central incisor
convex
93
root is ---, as long or longer than the central incisor, usually tapers distally
pointed
94
lingual aspect of the maxillary central incisor is --- in shape
trapezoidal
95
the lingual fossa is
deeper
| often with a lingual pit
96
prominent mesial and distal
marginal ridges
97
the lingual aspect as a pronounced
cingulum
98
the lingual aspect as deep developmental ---
grooves
| lingual developmental groove on the distal of cingulum
99
lingual aspect the tooth tapers to the
lingual
100
the mesial aspect of the maxillary lateral incisor is --- in outline
triangular
101
the labial outline of the maxillary lateral incisor is slightly
convex
102
the lingual outline of the maxillary lateral incisor is
concavo-convex
103
greatest curvature (height of contour) on the facial and lingual surfaces is located in the
cervical 1/3
| this is also true in the central incisor
104
the mesial aspect of the incisal surface/edge is angled
lingually
105
the medial aspect of the cervical curvature curves
incisally
| less than the central incisor
106
the mesial aspect of the root is -- shaped and tapers --
cone
| apically
107
the line through the center of the root bisects at the
incisal surface
108
the distal aspect of the lateral maxillary incisor is --- in outline
triangular
109
the distal aspect appears --- then the mesial view
wider
| distal of tooth curved lingually to conform to arch shape
110
the distal aspect cervical line curvature is - mm less than the media curvature
1 mm
111
the distal aspect may have a developmental groove on the --- of the crown, extending down the root
distal
112
the incisal aspect of the contour is more
convex
| ovoid in shape
113
the incisal aspect of the crest of the cingulum is slightly to the --- of center of the tooth
distal
114
in incisal aspect of the DL line angle is more --- than the ML line angle
rounded
| both these lone angles are more rounded than the central incisor
115
the mesial and distal contact areas are centered
labiolingually
116
pulp of the lateral maxillary incisor is
single canal
facial view: 2 pulp horns
cross sectional view may be triangular, round, or ovoid
