Maxillary Molars Flashcards
(130 cards)
1
Q
On the maxillary molars, how many roots are present?
A
Three roots
2
Q
What are the roots of the maxillary molars?
A
2 buccal, 1 lingual
3
Q
For maxillary molars out what root is the largest?
A
1 lingual
4
Q
Name the views of the maxillary molars:
A
Buccal; lingual
5
Q
The maxillary 2nd molar has ____ cusps; while the maxillary 1st molar has _____ cusps
A
4 cusps ; 5 cusps
6
Q
What cusp is the largest in maxillary molars?
A
Mesiolingual cusps
7
Q
What are the 4 cusps of the maxillary 2nd molar?
A
Distobuccal, distolingual, mesiobuccal, mesiolingual
8
Q
In maxillary molars, what cusps form the trigon or primary cusp triangle?
A
Mesiolingual, mesiobuccal and distobuccal
(ML, MB, DB)
9
Q
In maxillary molars, the ML, MB, and DB cusps form a :
A
Trigon or primary cusp triangle
10
Q
In maxillary molars, the ____ cusp is the smallest, and ______ in size from the 1st to 3rd molar
A
DL cusp; decreases
11
Q
In maxillary molars, the crowns are broader ____ than ____.
A
BL than MD
12
Q
In maxillary molars, the crowns are relatively short:
A
Occlusal-cervically
13
Q
In maxillary molars, the DB cusp is connected to the ML cusp by an:
A
Oblique ridge
14
Q
In maxillary molars, what forms the oblique ridge?
A
15
Q
The distal cusp ridge of the ML cusp and the triangular ridge of the DB cusp make up the ____ on what tooth?
A
Oblique ridge; maxillary 1st molar
16
Q
What makes up the oblique ridge of the maxillary first molar?
A
The distal cusp ridge of the ML cusp, and the triangular ridge of the DB cusp
17
Q
Label the following views of the maxillary 1st molar:
A
Top left: buccal
Top right: lingual
Bottom left: mesial
Bottom right: distal
Middle: occlusal
18
Q
Maxillary 1st molar: Buccal
The crown outline is:
A
Roughly trapezoidal
19
Q
Maxillary 1st molar: Buccal
What is visible from this view?
A
Parts of the 4 major cusps
20
Q
Maxillary 1st molar: Buccal
The distal profile is ______; the mesial profile is ____
A
Convex; convex and flat
21
Q
Label the following image of the maxillary 1st molar - what view is this from and where is mesial and distal?
A
Buccal view
Left: distal
Right: mesial
22
Q
Maxillary 1st molar: Buccal
Compare the MB and DB cusps:
A
MB cusp is larger & the DB cusp is more pointed
23
Q
Maxillary 1st molar: Buccal
The MB and DB cusps are separated by :
A
Buccal developmental groove
24
Q
Maxillary 1st molar: Buccal
The buccal developmental groove separates:
A
MB and DB cusps
25
Maxillary 1st molar: Buccal
Where are the mesial and distal contacts located?
Middle 1/3
26
Maxillary 1st molar: Buccal
Which contact is slightly more cervical?
Distal contact
27
What is the blue line showing? What view is this from? (Maxillary 1st molar)
Buccal aspect: buccal developmental groove
28
Maxillary 1st molar: Buccal
An interesting fact is that there is often a concavity present at the:
Cervical area on the distal surface of the DB cusp
29
Maxillary 1st molar: Buccal
What is often present at the cervical area on the distal surface of the DB cusp?
Concavity
30
Maxillary 1st molar: Buccal
What is significant about the often present concavity at the cervical area on the distal surface of the DB cusp? (2)
1. Can complicates restorations
2. Difficult to remove calculus
31
Maxillary 1st molar: Buccal
How many roots are visible from this view?
3
32
Maxillary 1st molar: Buccal
Root that is straight, curves distally, and apex is in line with MB tip
Mesiobuccal root
33
Maxillary 1st molar: Buccal
The smallest, distal inclination, then mesial root
Distobuccal root
34
Maxillary 1st molar: Buccal
The longest, in line with the buccal groove (root)
Lingual/palatal
35
Maxillary 1st molar: Buccal
The root trunk takes up ____ the length of the root
1/3
36
Maxillary 1st molar: Buccal
The point of bifurcation is:
4mm Apical CEJ
37
Maxillary 1st molar: Buccal
The roots of this tooth are: (relative to crown)
Twice as long as the crown
38
Maxillary 1st molar: Roots
The lingual, MB and DB roots are splayed:
Wider than the crown width
39
Maxillary 1st molar: Roots
List the roots longest to shortest:
L> MB> DB
40
Maxillary 1st molar: Roots
How many canals are present in each of the roots?
MB: 2 canals (90-95% of cases)
DB: 1 canal
Lingual: 1 canal
41
Label the following transverse section of the maxillary 1st molar roots:
Left: DB
Middle: Lingual
Right: MB
42
Maxillary 1st molar: lingual
From this view what cusps are visible?
ML and DL cusps
43
Maxillary 1st molar: lingual
The ML and DL cusps are separated by a:
Lingual groove
44
Maxillary 1st molar: lingual
ML and DL cusps are separated by a lingual that ends in the:
Middle lingual surface
45
Maxillary 1st molar: lingual
What is blue line depicting?
Lingual groove
46
Maxillary 1st molar: lingual
ML cusp= ____ width of tooth
3/5 mesiodistal
47
Maxillary 1st molar: lingual
ML cusp is ____ & _____ compared to the DL cusp
Broader and longest
48
Maxillary 1st molar: lingual
ML cusp contains:
Cusp of carabelli (5th cusp)
49
Maxillary 1st molar: lingual
The DL cusp is (funny silly goofy word)
Spheroidal
50
The fifth cusp located on the maxillary 1st molar:
Cusp of carabelli
51
What view allows you to see the cusp of carabelli?
Lingual view
52
This green line is showing _____, while the blue line is showing _____.
Cusp of carabelli
Lingual groove
53
Maxillary 1st molar: lingual
How many roots are visible? Which root is the longest?
3 roots visible; lingual longest
54
Maxillary 1st molar: lingual
What root is in line with the lingual groove?
Lingual groove
55
Maxillary 1st molar: lingual
What is present on the lingual spect from the terminus of the lingual groove extending to the middle 1/3 of the root?
Shallow depression
56
Maxillary 1st molar: mesial
What is the geometrical outline from this view?
Trapezoidal
57
Maxillary 1st molar: mesial
From this view, the tooth converges:
Occlusally
58
Maxillary 1st molar: mesial
From this view, the tooth converges occlusally with the maximum BL width at the:
Cervix
59
Maxillary 1st molar: mesial
What cusps are visible from this view?
MB and ML (+ cusp of carabelli)
60
What view of the maxillary first molar is this?
Mesial view
61
Maxillary 1st molar: mesial
From this view, what is the:
Buccal height of contour?
Lingual height of contour?
Mesial contact area?
Buccal height of contour: cervical 1/3
Lingual height of contour: middle 1/3
Mesial contact area: middle 1/3 offset to buccal
62
Maxillary 1st molar: mesial
What roots are visible from this view? What root is covered?
MB and lingual root (DB root is hidden by the MB root)
63
Maxillary 1st molar: mesial
From this view, where do we see the level of bifurcation?
3mm apical to CEJ
64
Maxillary 1st molar: mesial
From this view what root do we describe as banana shaped? And why’s?
Lingual root and narrow BL and 50% of time curves bucally
65
Maxillary 1st molar: distal
Crown constricts toward the:
Distal
66
Maxillary 1st molar: distal
Since the crown constricts toward the distal, the ___ aspect is visible from the distal
Buccal
67
Maxillary 1st molar: distal
What cusps are visible?
4 major cusps
68
Maxillary 1st molar: distal
How many roots are visible from this view?
3 roots
69
Maxillary 1st molar: distal
The bifurcation is about:
5mm apical to CEJ
70
Maxillary 1st molar: distal
The distal contact area is in the:
Middle 1/3 and offset bucally
71
Maxillary 1st molar: distal
What anatomical feature is present in the cervical area
DB concavity
72
Maxillary 1st molar: occlusal
What is the geometric outline?
Rhomboidal
73
Maxillary 1st molar: occlusal
For the rhomboidal geometric outline, what contributes to the acute angles? What contributes to the obtuse angles?
Acute angles= MB and DL
Obtuse angles= ML and DB
74
Maxillary 1st molar: occlusal
The crown us wider ____ than _____.
Buccolingually than mesiodistally
75
Maxillary 1st molar: occlusal
The _____ aspect is greater than the _____ aspect
Mesial aspect> distal aspect
76
The maxillary 1st molar is the only tooth which broadens:
Toward the lingual
77
On the maxillary 1st molar, describe the MD width both lingually and bucally
MD width greater on the lingual side than on the buccal side
78
Label the lingual and buccal sides of this image
Top: buccal
Bottom: lingual
79
Maxillary 1st molar: occlusal
Rank the cusps in order of largest to smallest:
ML cusp (largest)> MB> DB> DL> 5th cusp
80
Maxillary 1st molar: occlusal
ML, MB and DB cusps form the:
Primary molar triangle (trigon)
81
Maxillary 1st molar: occlusal
What forms the trigon?
ML, MB, DB cusps
82
Distal cusp ridge of the ML cusp and the triangular ridge of the DB cusp form the:
Oblique ridge
83
Maxillary 1st molar: occlusal
What are the two major fossa present?
Central fossa & distal fossa
84
Maxillary 1st molar: occlusal
Fossa that lies in the center of the trigon mesial to the oblique ridge, and roughly triangular
Central fossa
85
Maxillary 1st molar: occlusal
The central fossa lies in the center of the trigon _____ to the _____
Mesial to the oblique ridge
86
Maxillary 1st molar: occlusal
Fossa that is distal to the oblique ridge; roughly linear
Distal fossa
87
Maxillary 1st molar: occlusal
The distal fossa is ____ to the ____ ridge
Distal to the oblique ridge
88
Maxillary 1st molar: occlusal
In addition to the two major fossae, ____ minor are also present
2
89
Maxillary 1st molar: occlusal
The 2 minor fossa include:
Mesial triangular fossa and distal triangular fossa
90
Label all 4 of the occlusal fossa of the maxillary 1st molar and categorize as major or minor:
Left blue: distal triangular fossa (minor)
Right blue: mesial triangular fossa (minor)
Center red: central fossa (major)
Red oval: distal fossa (major)
91
Maxillary 1st molar: occlusal
At junction of the central developmental groove, buccal groove, & transverse groove of the oblique ridge
Central pit
92
Maxillary 1st molar: occlusal
The central pit is located at the junction of:
Central developmental groove, buccal groove, & transverse groove of the oblique ridge
93
Maxillary 1st molar: occlusal
At junction of the distal oblique groove and lingual groove
Distal pit
94
Maxillary 1st molar: occlusal
The distal pit is at the junction of:
Distal oblique groove and lingual groove
95
Maxillary 1st molar:
When root divides into 3 roots:
Trifurcation
96
Maxillary 1st molar: root
Name each level of furcation and which is the greatest:
Mesial, buccal and distal (distal greatest)
97
Maxillary 1st molar:
Proximal contacts
Mesial at:
Distal at:
Heights of contour
Buccal:
Lingual:
Mesial @ middle 1/3 offset to buccal
Distal @ middle 1/3 offset to buccal
Buccal @ cervical 1/3
Lingual @ middle 1/3
98
Label the views of this tooth; and what tooth is this?
Maxillary 1st molar:
Top left: buccal
Top right: lingual
Bottom left: mesial
Bottom right: distal
Middle: occlusal
99
Maxillary 2nd molars:
Compared to the maxillary 1st molar, the crown is:
Smaller, shorter, more rhomboidal
100
Maxillary 2nd molars:
How many occlusal types? What are the names? What are the most common?
2 occlusal types: rhomboidal and heart shaped, and the rhomboidal is most common
101
Maxillary 2nd molars:
The rhomboidal occlusal type resembles the ____ molars while the heart shaped occlusal type resembles the ____ molars.
1st; 3rd
102
Maxillary 2nd molars:
Compared to the maxillary 1st molar, the DL cusp on the maxillary 2nd is ____.
Smaller
103
Maxillary 2nd molars: What cusp is not present on this tooth when compared to maxillary 1st molar?
Cusp of carabelli
104
Maxillary 2nd molars:
Compared to the maxillary 1st molar, the crown is:
Shorter
105
Maxillary 2nd molars:
Compared to the maxillary 1st molar, the roots are ____ and are more _____.
As long or longer; more distally inclined
106
What tooth is shown? Label each view:
Maxillary 2nd molar
Top left: buccal
Top right: lingual
Bottom left: mesial
Bottom right: distal
Middle: occlusal
107
Maxillary 2nd molars: compared to the maxillary first molar, from the buccal view:
1. Crown is ______ and narrower ____
2. The DB cusp is ____
3. The roots are more _____.
4. The roots are more incline to _____.
5. The MB root apex is in line with ____.
1. Shorter and narrower MD
2. Smaller
3. Parallel
4. Distal
5. Buccal groove
108
Maxillary 2nd molars: lingual
The DL cusp is _____ compared to the maxillary 1st molar
Smaller
109
Maxillary 2nd molars: lingual
The lingual root is ______ MD
Narrower
110
Maxillary 2nd molars: lingual
The lingual root is _____ inclination
Distal
111
In the maxillary second molar, the apex of the root lines up with the _____ while in the maxillary 1st molar, the apex of the root lines up with the _____.
DL cusp tip; lingual groove
112
Maxillary 2nd molars: lingual
What cusp is not present?
Cusp of carabelli
113
Maxillary 2nd molars: mesial
This view is similar to the maxillary 1st molar but the crown height is _____.
Shorter
114
Maxillary 2nd molars: mesial
The BL width is ____ Compared to the maxillary 1st molar
The same
115
Maxillary 2nd molars: mesial
The roots do not diverge as much meaning they are:
Confined within the crown width
116
Maxillary 2nd molars: mesial
The contact area is:
In middle 1/3 offset to buccal
117
Maxillary 2nd molars: distal
The crown converges toward:
Distal
118
Maxillary 2nd molars: distal
Compared to the maxillary 1st molar, the DB and DL cusps are:
smaller
119
Maxillary 2nd molars: distal
From this view why is more of the occlusal surface and ML cusp visible (compared to max 1st molar)?
Because the DB and DL cusps are smaller
120
Maxillary 2nd molars: distal
The distal contact area is in :
Middle 1/3 offset buccally
121
Maxillary 2nd molars: distal
How many roots are visible from this view?
All 3 roots
122
Maxillary 2nd molars: occlusal
The geometrical outline is more ____ compared to the maxillary 1st molar?
Rhomboidal
123
Maxillary 2nd molars: occlusal
Compared to the maxillary 1st molar the _____ dimension is similar while the _____ dimension is smaller
BL; MD
124
Maxillary 2nd molars: occlusal
Compared to the maxillary 1st molar, the DB and DL cusps are:
Less developed
125
Maxillary 2nd molars: occlusal
The tooth constricts toward the _____ and converges toward the ____.
Distal; lingual
126
Maxillary 2nd molars: occlusal
Compared to the maxillary 1st molar, this tooth shows a more variable ____ & ____ anatomy
Pit and groove
127
Maxillary 2nd molars: occlusal
Some maxillary 2nd molars have no _____ & resulting in a _____ shape
DL cusp; heart
128
Maxillary 2nd molars: roots
Most of the time how many times are canals are present in the following roots?
MB:
DB:
Lingual:
MB: 1 most of the time
DB: 1
Lingual: 1
129
Name the cross section of these roots, what tooth this for?
Maxillary 2nd molar
Left: DB
Middle: Lingual
Right: MB
130
Maxillary 2nd molars:
Proximal contacts
Mesial:
Distal:
Height of contour
Buccal:
Lingual:
Mesial: middle 1/3 offset to the buccal
Distal: middle 1/3 offset to the buccal
Buccal: cervical 1/3
Lingual: middle 1/3
