Test 5 Flashcards
1
Q
maxillary molars are described as being what in shape where as the mandibular molars are what in shape
A
square, rectangular
2
Q
Maxillary molars can have how many cusps on the buccal surface as opposed to mandibular that can have 2-3
A
2 cusps only
3
Q
which molars have their cusps more even in length maxillary or mandibular
A
mandibular
4
Q
Maxillary 1st molar has how many developmental grooves on buccal surface? How many does the mandibular 1st molar have
A
1, 2
5
Q
which molar crowns are wider mesiodistally than buccolingually resulting in a more rectangular or pentagon outline.
A
mandibular
6
Q
describe the ridges of the maxillary molars vs the mandibular molars
A
Maxillary molars have oblique ridges that run diagonally across the tooth from the mesiolingual to the distobuccal cusp compared to mandibular molars which primarily have two transverse ridges that run directly buccolingually
7
Q
______molars have 4 fossae whereas ______molars have 3 fossae with a large central fossa
A
maxillary, mandibular
8
Q
Does the central groove of the maxillary molars cross the oblique ridge
A
no
9
Q
________molars have a central groove that crosses the center of the tooth, creating a “Y” or “+” shaped groove pattern.
A
mandibular
10
Q
_______ molars have 2 lingual cusps and are approximately the same size, whereas ______molars have 1 to 3 lingual cusps that vary in size
A
Mandibular Maxillary
11
Q
Mandibular developmental groove is centered on tooth what is the developmental groove like on the maxillary
A
off center
12
Q
At what age do 1st molars erupt
A
6 years old
13
Q
which molars Occlude with mandibular 1st & 2nd molars, “Cornerstone” in development of occlusion
due to eruption pattern and location in the arch
A
Maxillary 1st molars
14
Q
Maxillary 1st molar develops from how many lobes
A
4
15
Q
Largest buccolingual crown dimension (shared with maxillary 2nd molar) is which tooth
A
maxillary 1st molar
16
Q
Greatest equality of buccolingual & mesiodistal dimensions of any maxillary posterior tooth
A
Maxillary 1st molar
17
Q
which tooth contains a cusp of carabelli
A
Maxillary 1st molar
18
Q
the maxillary 1st molar’s Mesiolingual cusp has 2
______ ridges
A
triangular
19
Q
where is the cusp of carabelli located
A
located on the mesiolingual portion of the mesiolingual cusp
20
Q
How many cusps does the maxillary 1st molar have
A
4 cusps, 1 small cusp of carabelli
21
Q
which cusp of the maxillary 1st molar is the longest & largest cusp of all posterior teeth
A
The mesiolingual
22
Q
Generally, largest (surface area) tooth in oral cavity is which tooth
A
maxillary 1st molar
23
Q
which molar is heart shaped
A
maxillary 3rd molar
24
Q
what three cusps of the maxillary 1st molar form a triangle
A
MB, ML, DB
25
which of the four cusps of the maxillary 1st molar is least developed
distolingual
26
The outline of the occlusal surface resembles a ________with 2 acute and 2 obtuse angles for maxillary 1st molar
parallelogram (rhomboidal)
27
The acute angles are the mesiobuccal and distolingual angles. The obtuse angles are the mesiolingual and distobuccal angles. True or False
True
28
which cusp of maxillary 1st molars is present about 70% of the time.
The cusp of Carabelli (5th cusp)
29
List the size order of maxillary 1st molar cusps from largest to smallest
Mesiolingual, Mesiobuccal, Distobuccal, Distolingual, Cusp of Carabelli - Smallest
30
List order of the maxillary 1st molar cusp heights from largest to smallest
Mesiolingual, Distobuccal, Mesiobuccal, Distolingual
31
List order of the maxillary 1st molar fossa sizes from largest to smallest
Central, Distal, Mesial Triangular, Distal Triangular
32
The oblique ridge is formed by the union of the ________ridge and the________ ridge of the mesiolingual cusp.
distobuccal triangular ridge and the distal triangular ridge
33
The large mesiolingual cusp has two what
triangular ridges
34
what does the maxillary 1st molar have on the buccal surface
large buccal groove
35
what is the crown outline shape of the maxillary 1st molar
trapezoid
36
From the buccal view of the maxillary 1st molar how many cusps can you see? which one is missing
3, distolingual is missing
37
Which cusp is wider mesiobuccal or distal buccal cusp
The mesiobuccal cusp is broader (wider) than the distobuccal cusp.
38
which is the sharpest cusp of the maxillary 1st molar
distal buccal cusp
39
the buccal groove can sometimes end in what
a pit
40
How many roots does the Maxillary 1st molar have? which is the longest and largest
3, the palatal
41
The lateral separation (spread) of the two buccal roots is nearly as wide as the mesiodistal crown dimension and resemble the handles on a pair of pliers, this is characteristic of which tooth
maxillary 1st molar
42
what is noticeable on the buccal side of the root
deep developmental depression
43
Little if any of the proximal surfaces are visible from which view
lingual view
44
which cusp is the largest and longest from the palatal view
mesiolingual
45
the cusp of carabelli is on which surface of what cusp
lingual surface of mesiolingual cusp
46
which is largest and longest root
palatal root
47
how many roots are visible from the palatal view, is it the largest in the maxilla
all three, no third largest
48
how many cusps are visible from the mesial view for maxillary 1st molar
2 cusps
49
Unworn marginal ridges of maxillary molars have one or more projections called _____and they are more commonly (86% of the time) found on the mesial surface.
tubercle
50
The buccolingual position of the mesial proximal contact is located ________of the crown. It’s form is round to somewhat ovoid.
buccal to the center
51
From the mesial view which root is not visible
distobuccal root
52
The outline form of the lingual surface (both crown and root) resemble a_____curve similar to the human spinal column.
sigmoid
53
The palatal root “diverges boldly to the ______direction“. The palatal root is bent like a “banana”
lingual
54
How many cusps are visible from distal view
all four cusps
55
Which root is the smallest, shortest, and weakest root and it is a little larger buccolingually than mesiodistally.
The distobuccal
56
How many roots can you see from the distal view of maxillary 1st molar
3
57
At what age do the maxillary second molars erupt and how many teeth back from the midline is it
12 years, 7th tooth from the midline
58
Describe roots of maxillary second molars compared to the 1st, what is not present on second molars
roots are longer and not as spread, cusp of carabelli
59
which two cusps of the maxillary second are not as large and well developed as they are in the Maxillary 1st molar
Distal buccal and distal lingual
60
the maxillary second premolars feature what shape from the occlusal view and what from the buccal view
rhomboid, trapezoid
61
The crown of the maxillary second molar possesses a ____ taper due to the smaller distolingual cusp, it also has a ____crown convergence
lingual, lingual
62
which cusp is noticeably smaller in the maxillary second molars
distobuccal cusp
63
There are____ fossae on the occlusal surface and their order of size from largest to smallest is: central; distal; mesial triangular; and distal triangular.
4
64
How many and what kind of ridges are found on maxillary second molar
5 triangular ridges, 1 oblique ridge, 1 transverse ridge
65
In which direction do the roots lean for the maxillary second molar
distally
66
The distal marginal ridge is located farther cervically than the mesial marginal ridge. True or false for maxillary 2nd molar
True
67
The mesiobuccal root is not wider buccolingually than the distobuccal root True or false
False
68
More variations than all other (max./mand.) posterior teeth regarding size, root numbers, crown and root forms, for which molar
Maxillary 3rd molars
69
Crown is smaller & roots are shorter than 2nd molar, with a tendency toward fusion into one tapered root for which molar
maxillary 3rd molar
70
which tooth has a heart shaped crown and has a small occlusal table
Maxillary 3rd molar
71
The buccolingual dimension of the mesial half of the crown is considerably larger than the distal half. for maxillary 3rd molars, True of false
True`
72
The crown of the maxillary 3rd molars tapers from where to where
mesial to distal
73
What is common for maxillary third that is also in maxillary second in regards to crown convergence
converges lingually
74
The form of the lingual aspect of the crown is what shape
semi circular
75
How many functional cusps are typical on a maxillary third molar
3
76
which cusp is diminished in size and sometimes not present on maxillary 3rd molars
distolingual cusp
77
which ridge is poorly developed and most times absent for maxillary third molar
oblique ridge
78
There are many supplemental grooves on maxillary 3rd molar giving it what appearance
wrinkled
79
the maxillary 3rd molars have generally how many roots that have a long root trunk prior to furcation
3
80
the roots of maxillary 3rd molar are uniquely what in size
short
81
which teeth have the greatest morphologic variance of all posterior teeth
maxillary 3rd molars
82
When viewed bucally, which maxillary molar appears to be tipped distally on the root trunk since the occlusal surface slants cervically from mesial to distal.
maxillary 2nd
83
the distal buccal cusp is much smaller on which maxillary molar
maxillary second
84
which molar crowns are more bulbous than first and second molars and their crowns exhibits more rounding than first or second molar crowns.
maxillary third
85
When viewing second molars occlusally, the angle between the buccal and mesial surfaces (mesiobuccal angle) is more_____than it is on first molars.
acute
86
Mesiolingual cusp larger than distolingual cusp on which two maxillary molars
1st and second
87
How many oblique ridges? transverse ridges ? and triangular ridges does the mandibular 1st molar have
none, 2, 5
88
Which tooth plays a role in support of cheeks as well as keeping the chin a proper distance from the nose
mandibular 1st molar
89
How many roots does the mandibular 1st molar have
2
90
If you dont have which teeth, does the rest of teeth tend to drift mesially
mandibular 1st molars
91
which is the first permanent molar to erupt, that is said to be largest and strongest mandibular molar
Mandibular 1st molar
92
which is referred to as your six year molars
mandibular 1st molar
93
Mandibular 1st molars are said to be what in the mandibular arch
largest tooth
94
how many cusps does the mandibular 1st molar have
5
95
how many lobes does the mandibular 1st molar have
5
96
Largest mesiodistal crown dimension of any tooth in oral cavity is which tooth
mandibular 1st molar
97
which has the longest root of any molar
mandibular 1st molar
98
Mesial root has greatest
| buccolingual dimension of any root for which tooth
mandibular 1st molar
99
from the occlusal surface, which surface is most visible
buccal view
100
what kind of crown convergence appears in the mandibular 1st molar
a distal and lingual crown convergence
101
what is the shape of the occlusal table of the mandibular 1st molar
rectangular
102
the mesial and distal contact of the mandibular 1st molar is in what direction of the center of the crown
buccally
103
List in order the largest to smallest cusps of the mandibular 1st molar
largest to smallest: mesiobuccal, the two lingual cusps which are almost equal in size, distobuccal, and distal.
104
from the buccal view how many cusps can you see and from the lingual view how many cusps can you see for the mandibular 1st molar
buccal view = 5 and lingual view =3
105
List the order of cusp heights from largest to smallest for the mandibular 1st molar
highest to shortest: mesiolingual, distolingual, mesiobuccal, distobuccal, and distal.
106
How many fossa does the mandibular 1st molar have
3
107
Describe the shape of the mandibular 1st molar developmental groove
zig zag shape
108
The triangular ridges of the mesiobuccal and mesiolingual cusps and also the distobuccal and distolingual cusps meet to form a?
a transverse ridge.
109
which cusps are longer on mandibular 1st molar, buccal or lingual? making which triangular ridges longer
lingual, lingual
110
Which cusp is the largest, widest, and highest of the 3 buccal cusps for mandibular 1st molar
mesiobuccal cusp
111
Is the distal cusp of the mandibular 1st molar the sharpest
yes
112
the buccal cusps of the mandibular 1st molar are relatively what compared to the lingual
flat
113
The mesiobuccal groove is ____ than the distobuccal groove and may have a deep pit at its cervical end.
longer
114
The ______ groove does not frequently have a pit at its cervical termination of the mandibular 1st molar
distobuccal groove
115
which mandibular molar has short roots that are spread wide apart
mandibular 1st molar
116
The buccal height of contour is actually a mesiodistal ridge called the
buccal cervical ridge
117
for the mandibular first molar the mesial root is described as what compared to the distal root
longer and not as straight as the distal root
118
The mesial root is ______on the root trunk in such a way that it is frequently possible to see the distal surface.
twisted
119
The distal root apex extends____ to the distal surface of the crown.
distal
120
for the mandibular 1st molar where are the most carious lesions found, on what surface and why
more on the buccal surface, less on lingual because of saliva
121
the lingual groove for the mandibular 1st molar is what compared to the buccal groove
The distal root apex extends distal to the distal surface of the crown.
122
what is the mesial crown outline of the mandibular 1st molar
rhomboidal
123
which marginal ridges usually has a groove for the mandibular 1st molar
mesial and distal marginal ridge
124
the mesial root surface of the mandibular 1st molar contains what? from the mesial view can you see the distal root
developmental depression, no you cannot see distal root
125
More of the occlusal surface is visible from a_____ view than mesial view because the _____surface is shorter occlusocervically.
distal, distal
126
which is larger contact area for mandibular 1st molar, mesial or distal
distal
127
Mandibular first molar can contain three lingual cusps (tuberculum inter-medium) or an extra cusp on the distal marginal ridge (tuberculum sextum) True or false
True
128
Mandibular second molars erupt at what age
12
129
Mandibular second molar lacks which cusp, how many cusps does it have
distal cusp, only has 4 cusps
130
what is the shape of the central groove for the mandibular second molars
cross shaped, not a zig zag
131
is the mesial distal crown dimension longer than the cervicoinsical crown dimension for most molars
yes
132
what is the outline form from the buccal view, what is it from the occlusal view, what is it from the mesial proximal surface for mandibular 2nd molar
trapezoid, rectangular, rhomboidal
133
The buccal cervical ridge is prominent for which mandibular molars, which have a buccal surface that tapers in which direction
mandibular second molars, taper lingually
134
there is a prominent bulge (buccal cervical ridge) on the mesiofacial aspect of the crown for which tooth
mandibular second molars
135
from the occlusal view the crown tapers in which direction for mandibular second molars
distally
136
List the cusp heights of the mandibular second molars, highest to lowest
highest to shortest: mesiolingual, distolingual, mesiobuccal, and distobuccal.
137
which mandibular molar has many transverse ridges
mandibular second molar
138
which tooth has longer roots, with the mesial being longer than the distal in both.
mandibular second molar
139
which root trunk is longer before furcation mandibular 1st or 2nd
2nd
140
which mandibular molar is said to be symmetric
mandibular second
141
Mandibular third molar varies more in size/shape than any other molar, except
maxillary 3rd molar
142
which molar has the Smallest occlusocervical crown dimension of any mandibular teeth, has a more bulbous crown and has the shortest root in mandibular arch
mandibular 3rd molar
143
which tooth has the most distal inclination in the mandibular arch
mandibular 3rd molar
144
the occlusal outline of the mandibular third molar is said to be what in shape
ovoid
145
can the mandibular third molar have more than the traditional 4 cusps
yes
146
which cusp is the largest in the mandibular 3rd molar
mesiolingual cusp
147
the buccal surface is extremely what in the mandibular 3rd molar
convex
148
the distal root is not narrower and not shorter than the mesial root for the mandibular 3rd molar True or false
false
149
The roots are almost invariably short, fused, and have a marked distal inclination, may have up to 8 roots for what tooth
mandibular 3rd molar
150
Developing distal to this right mandibular third molar is what in some instances These can also be considered a fourth molar.
peridens or supernumerary tooth
151
the occlusal crown outline is more what in shape in the mandibular 1st molar than the rectangular shape found in mandibular second molars
pentagonal
152
Mandibular first molars usually have a total of ___cusps whereas second and third molars usually have ___ cusps.
5,4
153
mandibular second molar cusps are more what than 1st molar cusps
pointed
154
how many buccal cusps are on the mandibular 1st molars, how many on second and third molar
3, 2
155
mandibular first molars have how many buccal grooves, how many buccal grooves do the second and third have
2,1
156
Mandibular molars have 2 _____ cusps and are approximately the same size.
lingual
157
The crown tapers lingually more on first molars than second molars. True or false
True
158
Distal marginal ridge is more cervical than the mesial marginal ridge for which two mandibular molars
mandibular 1st and second molars
159
Distal proximal contact is more cervical than mesial contact for which two mandibular molars
mandibular 1st and second molars
