Mandibular Incisors Flashcards
(101 cards)
1
Q
Numbers assigned to mandibular central incisors
A
24, 25
2
Q
Numbers of the Mandibular lateral incisors
A
23, 26
3
Q
Where two adjacent teeth contact
A
Interproximal contact
4
Q
Spaces/spillways that widen out from the contact
A
Embrasures
5
Q
Anterior teeth have four embrasure spaces:
A
Incisal
Gingival (cervical)
Facial
Lingual
6
Q
Which is larger in anterior teeth, the incisal or gingival embrasure:
A
Gingival
7
Q
Which is larger in anterior teeth, the facial or lingual space:
A
They’re equal
8
Q
Posterior teeth have four embrasure spaces:
A
Occlusal
Gingival (cervical)
Facial
Lingual
9
Q
In posterior teeth, is the occlusal or gingival embrasure larger
A
Equal
10
Q
Which is larger in posterior teeth, the facial or lingual embrasure
A
Lingual
11
Q
Label the anterior embrasures
A
A- gingival (cervical)
B- incisal
C- facial
D- lingual
12
Q
Label the posterior embrasures
A
A- occlusal
B- gingival (cervical)
C- facial
D- lingual
13
Q
The Mandibular incisors are used to:
A
Cut/incise food
14
Q
How many mandibular incisors are present:
A
4
15
Q
Mandibular incisors have smaller ______ than any other tooth
A
Mesiodistal diameters
16
Q
Mandibular central incisors are the:
A
Smallest tooth
17
Q
In the mandibular arch, what is smaller- the central or lateral incisors
A
Central
18
Q
Mandibular incisors are broader _____ than _____
A
Buccolingually (BL) than Mesiodistally (MD)
19
Q
What is the outline of the mandibular central incisor
A
Trapexoisal
20
Q
The mandibular central incisor tapers:
A
Cervically
21
Q
Describe the incisal outline of the mandibular central incisor:
A
Straight
22
Q
What is present on the mandibular central incisor when the tooth erupts
A
Mamelons
23
Q
The crown is approximately two times as ____ as it is ____
A
Long IG as it is MD
24
Q
From a facial view of a mandibular central incisor, the mesial and distal outlines are ______ and taper to the ____
A
Straight up to the contact areas & taper to the cervix
25
From a facial view of the mandibular central incisor, the mesioincisal & distoincisal line angles are:
Sharp 90 degree angles
26
The mandibular central incisor is often described as the:
Only symmetrical tooth in the mouth
27
From a facial view of the mandibular central incisor, the mesial & distal contact areas are in the:
Incisal 1/3
28
From a facial view of the mandibular central incisor, both contacts:
Are at the same level
29
In most teeth, the ____ contact is positioned more cervically than the _____ contact
(Even if its located in the same 1/3 or junction)
Distal
Mesial
30
From a facial view of the mandibular central incisor, describe the length of the crown relative to the root:
Crown is shorter than root
31
From a facial view of the mandibular central incisor, describe the labial surfaces:
Smooth, no developmental depressions
32
From a facial view of a mandibular central incisor, the labial surface is ____ in the ____ & becomes more ______
Flat in the incisal 1/3, more convex cervically
33
From a facial view of the mandibular central incisor, describe the # of roots
Single roto
34
From a facial view of a mandibular central incisor, describe the root:
Narrow MD & curves distally in some cases
35
From a lingual view of a mandibular central incisor, the crown is _____ in outline
Trapezoidal
36
From a lingual view of a mandibular central incisor, the crown root is smooth & rounded, slightly concave, but has no:
Distinct lingual fossa
37
From a lingual view of a mandibular central incisor, we can see ____ & only minor elevations
Mesial & distal marginal ridges
38
From a lingual view of a mandibular central incisor, describe the cingulum when compared to a maxillary incisor:
Much less distance than in the maxillary incisor
39
From a lingual view of a mandibular central incisor, is a developmental groove present?
No
40
From a mesial view of a mandibular central incisor:
The tooth is _____ in outline
Triangular
41
From a lingual view of a mandibular central incisor, the labial outline is:
Curved (convex)
42
From a lingual view of a mandibular central incisor, the height of contour of the labial surface is in the:
Cervical 1/3
43
From a mesial view of a mandibular central incisor, the incisal edge lies ______ to the line bisecting the root
Lingual
44
From a mesial view of a mandibular central incisor, when worn, the incisal edge angles to the:
Facial
45
Fron a mesial view of a mandibular central incisor, the CEJ curves ____ about 1 mm more than on the ____
Incisally
Distal
46
In a mandibular central incisor, the CEJ curves incisally about 1mm more on the ___ than it does on the ___
Mesial than is does on the distal
47
When the mandibular central incisor is worn, the incisal edge angles to the:
Facial
48
From a mesial view of the mandibular central incisor, the cervical line extends 1mm more apically on the ____ than ____
Lingual
Labial
49
When discussing the mandibular central incisor, the teeth are broader ____ than ____
Labiolingually than mesiodistally
50
From a mesial view of the mandibular central incisor, the crown have a concavity below ______ & above the _____
Middle 1/3
Cervical line
51
From a mesial view of the mandibular central incisor, the root extends straight from the CEJ & tapers _______ from the middle 1/3
Apically
52
From a mesial view of the mandibular central incisor, the root may have a broad ____ along its length
Developmental depression
53
From a distal view of the mandibular central incisor, compared to the mesial view, the cervical line curves incisally 1mm _____ than on the mesial
Less
54
From a distal view of the mandibular central incisor, the developmental depression on the distal of the root is _____ than on the mesial
Greater
55
From a incisal view of the mandibular central incisor, what is obvious about the tooth:
The symmetry
56
From a incisal view of the mandibular central incisor, the incisal edge is at _____ to a line bisecting the crown ____
Right angles
Labiolingually
57
From a incisal view of the mandibular central incisor, the incisal edge lies ____ to the center of the tooth
Lingual
58
From a incisal view of the mandibular central incisor, the tooth coverges:
Lignually
59
From a incisal view of the mandibular central incisor, the MD width of the _____ surface is wider than the MD width of the ____ surface
Labial
Lingual
60
From a incisal view of the mandibular central incisor, contact areas are centered _____
Faciolingually
61
Number of roots in a mandibular central incisor:
Single
62
In a mandibular central incisor, the root is broader ____ than ___
FL than MD
63
On the root of the mandibular central incisor, developmental depressions run longitudinally down root, on the ____ & ____
Mesial & distal
64
On the mesial & distal sides of the root of the mandibular central incisors, what are present
developmental depressions
65
On a mandibular central incisor the ___ depression on the root is usually deeper than the ____ depression on the root
Distal
Mesial
66
A cross section of the mandibular central incisors root reveals what shape & contains:
Round or ovoid
Depression on the mesial & distal
67
How pulp canals are present in the root of the mandibular central incisor:
Usually one
68
Describe the pulp canal MD and FL of the mandibular central incisor:
MD= narrow
FL= broad
69
Around 40% of the time in the mandibular central incisor, how many pulp canals are present?
Two
70
If two pulp canals are present in a mandibular central incisor, what are the names?
Facial & lingual canals
71
Label each view of the mandibular central incisor
Facial, lingual, incisal, mesial, distal
72
The mandibular lateral incisor resembles what tooth:
Mandibular central incisor
73
When compared to the mandibular central incisor, the mandibular lateral incisor is:
Larger
74
How is the mandibular lateral incisor larger than the central incisor?
Wider MD
75
Because the mandibular lateral incisor is wider MD than the mandibular central incisor, all the extra width appears to be added to the:
Distal aspect of tooth
76
Label the type of teeth
Left- mandibular lateral incisor
Right- mandibular central incisor
77
Label each view of the mandibular lateral incisor:
Facial, lingual, incisal, mesial, distal
78
From a facial view of the mandibular lateral incisor, the distal crown height is often ____ compared to the mesial crown height
Shorter
79
From a facial view of the mandibular lateral incisor, the incisal edge slopes:
Downward distally
80
From a facial view of the mandibular lateral incisor, the mesioincisal angle is:
A sharp 90 degrees
81
From a facial view of the mandibular lateral incisor, the distoincisal angle is:
Rounded
82
From a facial view of the mandibular lateral incisor, the lateral is wider ____ compared to the central incisor
MD
83
From a facial view of the mandibular lateral incisor, the mesial and distal contacts are in the:
Incisal 1/3
84
From a facial view of the mandibular lateral incisor, although both mesial & distal contacts are in the incisal 1/3, the distal contact is:
More cervical than mesial contact
85
From a lingual view of the mandibular lateral incisor, compare the lingual surface to the mandibular central incisor’s lingual surface
The same
86
In the mandibular lateral incisor, the mesial & distal views are:
Quite similar
87
The developmental depressions on the mesial & distal surfaces of the root in the mandibular lateral incisor are ______ than on the mandibular central incisor
More pronounced (deeper)
88
On the mandibular lateral incisor, compare the distal & mesial root depressions:
Distal root depression is more marked than on mesial
89
On the mandibular lateral incisor, the distal aspect is:
Twisted lingually
90
When the mandibular lateral incisor is viewed from the distal what cannot be seen?
Lingual surface (marginal ridge)
91
Label the following views of the mandibular lateral incisor:
Right- mesial
Left- distal
92
From an incisal view of the mandibular lateral incisor, the incisal edge is _____ to the center of the tooth
Lingual
93
From an incisal view of the mandibular lateral incisor, the tooth is not:
Symmetrical
94
From a incisal view of the mandibular lateral incisor, the tooth is not symmetrical- the distal part of the crown appears to be curved:
Lingually
95
From a incisal view of the mandibular lateral incisor- the _____ line angle is positioned more lingual
DF
96
The root & pulp of the mandibular lateral incisor is similar to the central incisor but:
Slightly larger
97
Describe the cross sectional root shape of the mandibular lateral incisor
Ovoid/round
98
When viewing the root of the mandibular lateral incisor, the depression on the distal is ____ than on the central incisor
Deeper
99
In the mandibular lateral incisor, typically how many pulp canals are present
One pulp canal
100
In 40% of cases _____ pulp canals are present in the mandibular lateral incisor
Two
101
Label the following views of the mandibular lateral incisor:
Facial, lingual, incisal, mesial, distal
