Maxillary molar Flashcards
(112 cards)
1
Q
What number tooth is the maxillary right 3rd molar?
A
1
2
Q
What number tooth is the maxillary right 2nd molar?
A
2
3
Q
What number tooth is the maxillary right 1st molar?
A
3
4
Q
What number tooth is the maxillary left 3rd molar?
A
16
5
Q
What number tooth is the maxillary left 2nd molar?
A
15
6
Q
What number tooth is the maxillary left 1st molar?
A
14
7
Q
What is the main function of molars?
A
Mastication of Food
8
Q
Do molars help maintain the VERTICAL Dimension of the face in terms of preventing a protrusion of the chin and aged appearance?
A
Yes
9
Q
DO molars maintain continuity of the arches to allow for proper alignments?
A
yes
10
Q
Do molars help with esthetic appearances by keeping cheeks looking “full”?
A
YES
11
Q
Complete the sentence: Molars taper from the Buccal to the _______
A
Lingual
12
Q
Select the following option: Molars taper towards the (Mesial/Distal)
A
Distal
13
Q
True or False: Molars are succedaneous teeth
A
False
14
Q
How many cusps do maxillary molars normally have?
A
3 to 5
15
Q
What is the largest tooth in the mouth?
A
Molars
16
Q
Do molars have a broad occlusal surface or narrow occlusal surface?
A
Broad Occlusal Surface
17
Q
Are molars wider than they are tall?
A
YES
18
Q
True or False: The molars normally have a crown height that is taller than other teeth in the mouth
A
FALSE- Molars are short and wide
19
Q
True or False: Molars taper from buccal to lingual
A
T
20
Q
Do crowns tend to get more narrow as you move lingually?
A
yes
21
Q
True or false: Typically the buccal surface is wider M-D than the lingual surface
A
True
22
Q
Do the maxillary 1st molars have a wider lingual surface M/D?
A
YES- that is an exception to card #21
23
Q
True or False: Molars taper towards the distal
A
t
24
Q
True or False: The distal aspect of the tooth is wider buccolingually than the mesial crown
A
FALSE-
The mesial aspect of the tooth is wider buccolongually than the distal crown
25
Which marginal ridge sits lower, more cervically?
Distal Marginal Ridge
26
Which marginal ridge sits lower, more cervically?
Distal Marginal Ridge
27
True or False: Since the distal marginal ridge sits lower than the mesial marginal ridge, the majority of the occlusal surface is viewable on the distal
T
28
Where is the height of contour on buccal?
c1/3
29
lingual
m1/3
30
Where is the height of contour on the mesial?
Junction between the occlusal and middle third
31
Where is the height of contour on the distal?
M 1/3
32
When is the first calcification of maxillary first molar?
Birth
33
enamel complete
3-4 years
34
eruption
6
35
root completion
9-10 years
36
Is the crown width greater BL than MD?
Yes
37
Are the roots longer than the crown?
YES
38
How many roots does the maxillary 1st molar have?
3 roots, 2 buccal roots and 1 lingual root
39
How many roots do maxillary molars have? Versus how many roots do mandibular molars have?
3 roots; 2 roots
40
How many cusps does the maxillary 1st molar have?
5 cusps- arranged in size: Mesiolingual Cusp, Mesiobuccal Cusp, Distolingual Cusp, Distobuccal Cusp, Cusp of Carabelli
41
Does the maxillary 1st and 2nd molar have an oblique ridge on the occlusal surface?
YES- maxillary 1st molars oblique ridge is more prominent and bigger
42
Is the mesial distal width on the lingual side of the maxillary first molar typically greater?
YES
43
What is the "fifth" cusp often referred to as on maxillary 1st molar?
Cusp of Carabelli
44
True or False: Maxillary 1st molars usually have 3 roots with one canal
T
45
Along with what other tooth in the mouth are maxillary 1st molars considered cornerstones of the dental arches- other tooth besides canines
Mandibular 1st molar
46
Is the root trunk significant from the buccal aspect?
YES
47
Where is the furcation of the two buccal roots centered on?
Mesial Distally
48
Which root is the longest root of the maxillary 1st molar?
Palatal Root/Lingual Root
49
What angle does the mesiobuccal cusp ridges form?
Obtuse Angle
50
What angle does the distobuccal cusp ridge forms?
90/Right Angle
51
True or False: Buccal Cusps on the maxillary 1st molar are longer than lingual cusps
False
52
What groove is found between the two cusps on the buccal surface?
Buccal groove
53
From the lingual aspect, what makes up the majority of the surface of the tooth and is also the largest of the four main cusps?
Mesiolingual Surface/Cusp
54
Which cusp form a spheroidal/round shape?
Distolingual cusp
55
What groove is found on the lingual surface of the tooth that separates the two lingual cusps?
Lingual groove
56
From the mesial aspect, which root is the longest?
Palatal root
57
Is the palatal root more narrow buccolingually or narrower mesial distally?
More narrow buccolingually- best seen from proximal views
58
Which roots are wider buccolingually?
The two buccal roots
59
From the mesial aspect do you see 2/3 of the mesiobuccal root and 1/3 of the lingual root?
Y
60
What makes up the Height of Contour on the buccal surface?
Cervical Ridge
61
Will you see the cusp of carabelli on the mesial aspect of the tooth?
Y
62
Does the cusp of carabelli vary in size, via region, ethnicity, and genetically?
Y
63
Is the cusp of carabelli functional?
No
64
Due to what phenomenon is it possible that we can see some of the buccal surface from the distal aspect?
Distal taper
65
Since the distal marginal ridge sits more gingival, this reveals what particular ridge?
Triangular ridges of the distal portion of the occlusal surface (distal buccal triangular ridge and the distal lingual triangular ridges)
66
How is the cervical line situated on the distal aspect of the crown?
Straight across
67
Rank the three roots in size from biggest to smallest on the maxillary 1st molar!
Palatal Root/Lingual Root, Mesiobuccal Root, and Distobuccal Root
68
What shape is the occlusal surface?
Rhomboidal in shape
69
What is an oblique ridge?
A transverse ridge that crosses obliquely
70
What is a transverse rige?
Two triangular ridges combined
71
What is the direction that the oblique ridge runs in?
Distobuccal to mesiolingual
72
Does the maxillary 1st molar have a significant central fossa and mesial and distal triangular fossa as well?
Y
73
From the distal triangular fossa, is there a central groove that crosses OVER the oblique ridge?
NO
74
From the distal triangular fossa, is there a central groove that crosses OVER the oblique ridge?
NO
75
What is a groove that is somewhat a continuation of the central groove that crosses onto the oblique ridge?
Transverse groove of the oblique ridge
76
Where does a significant ridge from the distal triangular fossa end up that continues along the side of the oblique ridge?
Lingual Goove
77
What reflects the triangle arrangement of the roots?
The triangular arrangement of the three large cusps: Mesiolingual, Mesiobuccal, and Distolingual
78
Which root is over the top of the mesiolingual cusp?
Palatal Root/Lingual root
79
What makes up the maxillary molar primary cusp triangle?
The three large cusps and the ridges that go between them
80
Does the pulp chamber follow the cusp triangle formation?
Y
81
From the buccal, how many cusps are visible?
4- not the carabelli
82
Is the mesiobuccal cusp broader than distobuccal cusp?
Y
83
How many roots are visible from the buccal aspect?
All 3
84
How many cusps are visible from the lingual aspect?
Only 3, you CANNOT see the two buccal cusps
85
How many cusps can you see from the mesial aspect?
Only 3- mesiobuccal, mesiolingual, and cusp of carabelli
86
How many roots can you see from the mesial aspect?
Only 2, remember the distobuccal root is smallest
87
How many cusps can you see from the distal aspect?
4- not the cusp of carabelli
88
How many roots can you see from the distal aspect?
All 3
89
What is the form of the occlusal surface?
Rhomboidal
90
How many major fossa do you have?
Two major fossa: Central fossa an Distal Fossa
91
Does the maxillary first molar have an oblique ridge that runs from the distobuccal to mesiolingual?
Y
92
Does the maxillary 2nd molar have a cusp of carabelli?
NO- thus only four cusps
93
When is the first calcification of maxillary 2nd molar?
2.25- 3 years
94
When is enamel completion of maxillary 2nd molar?
7-8 years
95
When is eruption of maxillary 2nd molar?
12-13 years
96
When is root completion of maxillary 2nd molar?
14-16 years
97
How many roots does the maxillary 2nd molar have?
3- they all tend to have one canal associated as well
98
True or False: The roots are more parallel in the maxillary 2nd molars than the 1st, and this tends to be the case as you move more posterior because you lose room
T
99
Is the crown on the 2nd maxillary molar shorter than the first?
Y
100
Where is the furcation of the Mesiobuccal and Distobuccal Roots?
Centered Mesiodistally just like the maxillary 1st molar
101
Is the crown more narrow in the mesiodistal dimension than the first?
Y
102
From the lingual aspect, since the distolingual cusp is smaller than that on the first, what is the shape of that distolingual cusp?
Spheroidal
103
Form the mesial aspect, is the cervical ridge on the buccal apparent?
Y
104
What is the shape on the proximal aspect of all maxillary molars?
Trapezoidal
105
Does the distal marginal ridge sit lower on the maxillary 2nd molars?
YES- thus you can see the triangular ridges on occlusal surface
106
Do you have an oblique ridge on the maxillary 2nd molars too?
YES- but it is smaller- still runs in a distobuccal to mesiolingual direction
107
Besides the buccal groove on the 2nd maxillary molar and not having a pit, is it shorter and longer than first?
Shorter
108
What is more prominent on the 2nd maxillary molar?
Mesiobuccal cervical edge
109
What is another name for maxillary third molars?
Wisdom teeth
110
True or False: Maxillary 3rd molars appear as a developmental anomaly, some people do NOT have them
t
111
Are roots commonly fused on third molars?
Y
112
True or False: There are large amounts of variation when it comes to the anatomy of third molars
t
