Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DMD 5300 Dental Anatomy 3 > Molars (complete) > Flashcards

Molars (complete) Flashcards

1
Q

in the universal numbering system, what numbers are the molars

A

1,2,3 - 14, 15, 16 - 17, 18, 19 - 30, 31, 32

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

On the 1st and 2nd molars (maxillary and mandibular) how many cusps does each typically have?

A

Max 1st - 4 (5 if you have the cusp of carabelli)
Max 2nd - 4
Man 1st - 5
Man 2nd - 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

On the 1st and 2nd molars (maxillary and mandibular) how many lobes does each typically have

A

Max 1st - 4 (5 if you have the cusp of carabelli)
Max 2nd - 4 (or 3)
Man 1st - 5
Man 2nd - 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the functions of molars

A
  1. Grinding mastication (grinding)
  2. Maintain of vertical dimension of face
  3. supports cheeks (esthetics)
  4. keep tongue confined in the arch
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What happens to someones vertical dimension if they don’t have teeth

A

they have a decreased vertical dimension

in other words their chin can move a lot closer to their nose than normal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are problems associated with loss of vertical dimension

A

muscle and joint pain
accelerated wear in TMJ cartilage and bone
less asthetics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

In all molars, how does the mesiodistal dimension compare to the occlusocervical

A

the mesiodistal dimension is greater than the occlusocervical dimension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

which type of teeth are the shortest occlusocervically

A

the Molars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How does the size of molars compare to all other teeth

A

they are generally larger than all other teeth (but they are the shortest)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

on all molars, how do the distal cusps compare to the mesial cusps

A

distal cusps are shorter than the mesial cusps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

(from a buccal, or lingual view) from mesial to distal, what is the taper like on all molars

A

all molars have a mesial to distal taper (because of the relative size of the mesial and distal cusps)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the taper like for the crowns of all molars from the occlusal view (buccal-lingually)

A

All molars have a buccal to lingual taper, (buccal is wider than lingual)
EXCEPT the maxillary first molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the taper like for the crown of all molars from the occlusal view (mesial to distal)

A

All molars have a mesial to distal taper (mesial is wider than distal)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the molars has a lingual to buccal taper, as opposed to the others that have a buccal to lingual taper

A

the 1st maxillary molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where is the buccal height of contour on molars

A

in the cervical third (all teeth)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where is the lingual height of contour on molars

A

in the middle third (posterior teeth)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Where is the mesial contact located on molars

A

in the middle third (close to the middle/occlusal junction)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where is the distal contact located on molars

A

in the middle third (slightly more cervical than the mesial contact)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

how does the buccolingual dimension compare to the mesiodistal dimension in molars

A

Maxillary molars have a buccolingual dimension that is greater than the mesiodistal dimension
Mandibular molars have a mesiodistal dimension that is much greater than the buccolingual dimension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

in maxillary molars, what happens to the distolingual cusp as you move from the 1st to the 3rd molar

A

the distolingual cusp gets smaller and smaller as you move from 1st to 2nd to 3rd maxillary molars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which type of molars usually have 2 roots

A

all of the mandibular molars (not the maxillary)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the names of the three roots of maxillary molars

A

mesiobuccal root
distobuccal root
lingual (palatal) root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What happens to the roots of the molars as you move from 1st to 2nd to 3rd molars

A

they become closer together (sometimes they even fuse)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

how many cusps does a mandibular 1st molar usually have

A

5
3 buccal cusps
2 lingual cusps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are the names of the 5 cusps of mandibular 1st molars

A 
distal
distobuccal
mesiobuccal
mesiolingual
distolingual
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

which teeth are shorter, the maxillary or the mandibular molars

A

mandibular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Which molars, Max or Man, have two roots

A

mandibular molars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what are the names of the two roots of mandibular molars

A

mesial and distal roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

When do the molars begin calcification

A 
Max 1 - Birth
Man 1 - Birth
Max 2 - 3 years
Man 2 - 3 years
Max 3 - 9 years
Man 3 - 9 years
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

When are the crowns of molars completed

A 
Max 1 - 3 years
Man 1 - 3 years
Max 2 - 7.5 years
Man 2 - 7.5 years
Max 3 - 14 years
Man 3 - 14 years
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

When do the molars erupt

A 
Max 1 - 6 years
Man 1 - 6 years
Max 2 - 12.5 years
Man 2 - 12 years
Max 3 - 19 years
Man 3 - 19 years
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

When do the roots of molars become complete

A 
Max 1 - 9 years
Man 1 - 9 years
Max 2 - 15 years
Man 2 - 14.5 years
Max 3 - 21.5 years
Man 3 - 21.5 years
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Where in the order of eruption for its arch do molars fall

A

1st is 1st
2nd is 7th
3rd is 8th

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

where in the overall order of eruption do the molars fall

A 
Max 1 - 2nd
Man 1 - 1st
Max 2 - 14th
Man 2 - 13th
Max 3 - 16th
Man 3 - 15th
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

from which view of the mandibular first molar can you see all of the cups

A

from the buccal view (because the lingual cusps are taller)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

on the first max molar, how does the mesio and distobuccal cusps compare

A

the mesiobuccal cusp is wider

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What kind of angle is formed on the mesiobuccal cusp (by the cusp ridges as the meet at the cusp tip) of maxillary first molars

A

it is an obtuse angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

what kind of angle is formed on the distobuccal cusp (by the cusp ridges as the meet at the cusp tip) of the maxillary first molars

A

it is an acute angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What is the buccal groove like on the maxillary first molars

A

it runs parallel to the long axis of the distobuccal root

and it extends to a point near the center of the crown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

What is the cervical line like on the maxillary first molar

A

very slightly curved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

From the buccal view are all three roots on maxillary molars visible

A

yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Do roots on maxillary molars converge apically? or do they diverge apically

A

they converge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

in which direction are the roots of maxillary molars inclined toward

A

they are inclined toward the distal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Which ways do the three roots of maxillary molars typically curve

A

Mesiobuccal root curves distally at the middle third
Distobuccal root is straight or curves mesial at the middle third
Lingual/palatal root is straight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

List the three roots of maxillary molars from longest to shortest

A

Lingual/palatal is longest
Mesiobuccal
Distobuccal is shortest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

What is the root trunk?

A

the portion of the root from the cervical line to the point of furcation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

What do you call the furcation, or the place where the root splits into multiple roots, on a maxillary molar

A

a trifurcation (because it splits into three roots, it is a bifurcation when it splits into two roots)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Is there a concave area on the buccal side of the root that extends from the trifurcation point to the cervical line on maxillary molars

A

yes. But on the buccal side it doesn’t extend up onto the crown, like it does on the lingual side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

What are the lingual cusps like on maxillary first molars

A

the mesiolingual cusp is very wide, and the cusp ridges meet at an obtuse angle
the distolingual cusp is very rounded

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

at what angle does the mesiolingual mesial cusp ridge meet the mesial crown outline on the maxillary first molar

A

at a right angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

on which tooth do you often see carabellis cusp

A

the maxillary first molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

what is carabellis cusp

A

it is a little tiny cusp on the lingual aspect of the mesiolingual cusp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

how do the cusp tips on carabellis cusp compare to the cusp tips on the mesiolingual cusp

A

they are parallel to them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

Where is the lingual groove mesiodistally located

A

right in the middle of the lingual surface of the crown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

the lingual groove of the maxillary first molar begins as an extension of _____. and often ends with a ______

A

the distal oblique ridge (groove?)

Pit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

all three roots of the maxillary first molar are visible from three of the four views, which view aren’t all three visible from

A

They aren’t all three visible from the mesial view, because the mesiobuccal root is wider and taller than the distobuccal root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

what does the apex of the palatal root line up with

A

the occlusal end of the lingual groove (where it is between the mesiolingual and distolingual cusps)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

there is a shallow developmental depression on the lingual side of the maxillary first molar. It goes from where to where

A

it goes from the middle third of the lingual side of the of the lingual(palatal) root, and it crosses the cervical line onto the crown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

From which proximal view is little or none of the occlusal surface visible on the maxillary 1st molars. and why?

A

from the mesial view you can’t see the occlusal surface, or at least not much of it. This is because the mesial cusps are taller than the distal cusps, and the mesial marginal ridge is taller than the distal marginal ridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

how does the mesial marginal ridge on the maxillary first molar compare the distal marginal ridge on the maxillary first molar

A

the mesial marginal ridge is taller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

from the mesial view, what outline helps you see the fifth (carabellis) cusp

A

the lingual outline, you will see an indentation 2mm cervical to the cusp tip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

why is the mesiobuccal root wider than the distobuccal root

A

because the mesiobuccal root often has a second canal space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

what is the second canal space in the mesiobuccal root called

A

MB2 (mesiobuccal #2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

how does the mesial root trunk compare to the buccal root trunk

A

it is shorter on the mesial aspect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

what is the depression on the mesial surface of the maxillary first molar like

A

it goes from the trifurcation point up across the CEJ onto the crown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

from the mesial view, what does the mesiobuccal root look like

A

it takes up almost two thirds of the width of the tooth,
it has a depression that runs its entire length.
Its root tip lines up with the mesiobuccal cusp tip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

on the maxillary first molar which root is the longest

A

the lingual (palatal)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

What is the shape of the lingual (palatal) root on the maxillary first molar from the mesial view

A

it is banana shaped (lingual outline is convex, the buccal outline is concave)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

From the distal view of the maxillary first molar, can you see the occlusal surface

A

yes, because the distal marginal ridge is shorter than the mesial marginal ridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

from the distal view of the maxillary first molar, can you see the buccal surface of the crown

A

yes, because the tooth is wider buccolingually on the mesial side of the tooth than on the lingual side.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

What does the cervical line on the distal side of the maxillary first molar look like

A

it is nearly straight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

from the distal view of the maxillary first molar, how many roots can you see

A

all three of them (because the mesiobuccal is wider and taller)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

Where is the distal contact of the maxillary first molar located

A

it is centered, both cervicocclusally and buccolingually

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

what does the root depression on the distobuccal root like on the maxillary first molar

A

it is on most of the root and extends over the CEJ onto the crown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
75
Q

What is the shape of the occlusal surface of the 1st maxillary molar

A

Rhomboid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
76
Q

Which angles of the rhomboid are acute for the maxillary first molar

A

the mesiobuccal and distolingual

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
77
Q

Which angle of the rhomboid are obtuse for the maxillary first molar

A

the mesiolingual and distobuccal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
78
Q

list the 5 cusps of the maxillary first molar from largest to smallest

A 
mesiolingual
mesiobuccal
distobuccal
distolingual
cusp of carabelli
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
79
Q

Which cusps of the maxillary first molar make up the primary cusp triangle (or trigon)

A

mesiolingual
mesiobuccal
distobuccal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
80
Q

which two teeth can have a lingual to buccal taper

A

the maxillary first molar

the mandibular 2nd premolar (3 cusp type)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
81
Q

What makes up an oblique ridge

A

the disal cusp ridge of the mesiolingual cusp and the triangular ridge of the distobuccal cusp. of maxillary molars

82
Q

how does the height of the oblique ridge compare to the height of the marginal ridges of maxillary molars

A

they are all on the same level

83
Q

On which teeth can you have an oblique ridge

A

the maxillary molars only

84
Q

when restoring a cavity on the occlusal surface of the maxillary molars, what structure that isn’t a cusp do we really try to preserve

A

the oblique ridge

85
Q

What are the major fossa of the maxillary first molar

A

central and distal fossa

86
Q

where is the distal fossa of the maxillary first molar

A

the fossa just distal to the oblique ridge

87
Q

what are the minor fossa of the maxillary first molar

A

the mesial and distal triangular fossa (down from the mesial and distal marginal ridges)

88
Q

What are the seven grooves of the maxillary first molar

A
  1. central groove
  2. buccal groove
  3. buccal groove of the central fossa
  4. transverse groove of the oblique ridge
  5. distal occlusal groove (oblique)
  6. lingual groove
  7. fifth cusp groove
89
Q

What are mulberry molars

A

caused by congenital syphilis

short molars covered with rounded enamel growths

90
Q

what is taurodontism

A

enlarged root trunks

91
Q

Which cusps of maxillary molars are the functional cusps

A

the lingual cusps

92
Q

which cusps of the maxillary molars are the non functional cusps

A

the buccal cusps

93
Q

Where are the points of occlusion for the maxillary first molar

A

centric cusps = mesiolingual and distolingual

centric stops = Central fossa and mesial marginal ridge

94
Q

What are the universal numbers for maxillary second molars

A

2 and 15

95
Q

how does the occlusocervical dimension of maxillary second molars compare to that of maxillary first molars

A

maxillary second molars are shorter

96
Q

How do the roots of maxillary second molars compare to the roots of the maxillary first molars

A

they are about the same length, but the maxillary second molars’ roots usually are more distally inclined and they are less diverged (closer together)

97
Q

Which has a longer root trunk, the maxillary first molar or the maxillary second molar

A

the maxillary second molar

98
Q

how does the mesial root depression on the maxillary second molar compare to the mesial root depression of the maxillary first molar

A

it is confined to the root surface and doesn’t extend onto the crown like the mesial root depression on the maxillary first molar does

99
Q

how does the occlusal size of the maxillary second molar compare to the occlusal size of the maxillary first molar

A

they are about the same size buccolingually, but the maxillary second molar is smaller mesiodistally than the maxillary first molar

100
Q

how does the number of cusps compare between the maxillary first and second molars

A

the second molar will only have four, where as the maxillary first can have 5

101
Q

how does the supplemental anatomy of the maxillary second molar compare to the supplemental anatomy of the maxillary first molar

A

the maxillary second molar has more supplemental anatomy

102
Q

What are the two shapes that can be used to describe the occlusal surface of the maxillary second molar

A

rhomboid or heart shaped

103
Q

what determines whether the shape of the occlusal surface of the maxillary second molar is rhomboid or heart shaped

A

the size of the distolingual cusp.
if it is large then it will be rhomboid shaped
if it is small then it will be heart shaped

104
Q

name the four cusps of the maxillary second molar from smallest to largest

A

distolingual (smallest)
distobuccal
mesiobuccal
mesiolingual (largest)

105
Q

on the maxillary second molar, which cusps make up the primary triangle (trigon)

A

mesiolingual
Mesiobuccal
distobuccal

106
Q

On the maxillary second molar which cusps are the centric cusps (functional)

A

mesiolingual
distolingual

(same as the max. 1st molar)

107
Q

on the maxillary second molar, where are the centric stops

A

the mesial marginal ridge (MMR)
the central fossa

(same as the max first molar)

108
Q

what occludes with the MMR of the max first molar

A

mesiobuccal cusp of the mandibular first molar

109
Q

what occludes with the central fosssa of the max first molar

A

distobuccal cusp of the mandibular first molar

110
Q

what occludes with the MMR of the max second molar

A

the mesiobuccal cusp of the man 2nd molar

111
Q

what occludes with the central fossa of the max second molar

A

distobuccal cusp of the mandibular 2nd molar

112
Q

Which tooth is the most likely to never form

A

maxillary third molar

113
Q

which of the maxillary molars is the most variable

A

the third molar

114
Q

how does the size of the max third molar compare to the other max molars

A

smaller in all dimensions

115
Q

which of the max molars has the most supplemental grooves

A

the third

116
Q

what can be the shapes of the occlusal surface of the max third molar

A

heart or rhomboid

117
Q

what are the cusps of the max third molar

A

mesiolingual
mesiobuccal
distobuccal
distolingual (small, sometimes even missing)

118
Q

how do the roots of the max third molars compare to the roots of the other two max molars

A 
shorter
closer together (often fused)
more distally inclined
119
Q

is it common that the roots of the max third molar are long, and the crown is short

A

yes, that is common

120
Q

how many canals does the max first molar usually have

A

it has four canals slightly more often than it has three

121
Q

if there are only three roots in the max first molar, where does the common fourth canal form

A

in the mesiobuccal root

122
Q

how many pulp horns does the max first molar have

A

4 (one per major cusp)

123
Q

how many canals does the max second molar usually have

A

3 and 4 are about equally common

124
Q

where does the common fourth canal of the max second molar usually form

A

the mesiobuccal root

125
Q

what are the universal numbers of the man 1st molar

A

30 and 19

126
Q

from what view can you see all five cusps of the man 1st molar. Why?

A

from the buccal, because the lingual (non-functional) cusps are taller than the buccal cusps

127
Q

how do the buccal cusps compare to the lingual cusps of the man 1st molar

A

they are shorter and more rounded, the lingual cusps are taller and more pointed

128
Q

how do the three buccal cusps of a man 1st molar compare

A

the mesiobuccal cusp is the widest and the least round
the distobuccal cusp is almost as wide but more rounded than the mesiobuccal cusp
the distal cusp is the most narrow and most pointed

129
Q

how many developmental grooves are there on the buccal surface of mandibular 1st molars

A

2

130
Q

what are the two developmental grooves on the buccal surface of the man 1st molar

A

the mesiobuccal groove

the distobuccal groove

131
Q

which is longer, the mesiobuccal groove or the distobuccal groove of the man 1st molar

A

the distobuccal groove is longer

132
Q

where does the mesiobuccal groove of man 1st molars begin and end

A

it begins between the mesiobuccal and distobuccal cusps and ends in the middle third of the crown in a depression or pit (buccal pit)

133
Q

how is the pit of the mesiobuccal groove clinically significant

A

it often needs to be restored

134
Q

where does the distobuccal groove of the man 1st molar begin and end

A

it begins between the distobuccal and distal cusps, and ends just distal to the cervical ridge

135
Q

which of the two buccal grooves on the man 1st molar typically ends in the buccal pit

A

the mesiobuccal groove

136
Q

what feature of the mandibular molars is similar to the buccal bulge of primary molars

A

the cervical ridge (it is a horizontal ridge at the gingival third of the buccal surface of the crown of the man 1st molar)

137
Q

how does the root trunk of the mandibular 1st molar compare to the root trunk of the maxillary molars

A

it is shorter

138
Q

is there a depression on the buccal surface of the root of mandibular 1st molars

A

yes, it begins deep at the bifurcation point, then becomes more shallow as it approaches the CEJ

139
Q

Where are the two roots of the mandibular molars positioned

Mesiodistally or buccolingually

A

mesiodistally

140
Q

how do the roots of the mandibular first molar usually compare to the roots of the other two mandibular molars

A

they are usually longer and more divergent on the man 1st molar than the other two

141
Q

on the man 1st molar how do the mesial and distal roots compare to each other

A

the mesial root is a little longer, more curved than the distal root and less pointed
the distal root is usually shorter, less curved, and more pointed

142
Q

How many cusps can you see from the lingual view of the man 1st molar

A

three

143
Q

which cusps can you see from the lingual view of the man 1st molar

A

mesiolingual cusp
distolingual cusp
distobuccal cusp

144
Q

how does the mesiolingual cusp compare to the distolingual cusp of the man 1st molar

A

the mesiolingual cusp is taller and wider than the distolingual cusp

145
Q

how does the anatomical crown length of the lingual surface of the man 1st molar compare to the anatomical crown length of the buccal surface

A

they are the same size

146
Q

how are the anatomical crown lengths of the buccal and lingual surfaces the same length if the lingual crowns are taller

A

the cervical line is more occlusally located on the lingual surface of the tooth than it is on the buccal surface

147
Q

how does the root trunk of the lingual side of the man 1st molar compare to the root trunk of the buccal side

A

the root trunk on the lingual side is longer (because the cervical line is more occlusal)

148
Q

how does the length of the roots on the lingual side compare to the length of the roots measured on the buccal side

A

the roots on the lingual side measure longer because of the more occlusal cervical line

149
Q

what is the anatomical crown

A

the amount of tooth covered by enamel

150
Q

what is the clinical crown

A

the amount of tooth exposed occlusal to the gingiva

151
Q

what is the anatomical root

A

the area of the tooth covered with cementum

152
Q

what is the clinical root

A

the amount of tooth embedded in the alveolar bone

153
Q

where is the greatest curvature on the buccal side of the tooth from the mesial view

A

it is in the cervical third, That bump is the cervical ridge

154
Q

how does the height of the crest of contour of the mandibular molars compare to the height of the crest of contour of maxillary molars

A

it is still in the cervical third, but it is more occlusal on the mandibular molars

155
Q

from the mesial view of the mandibular 1st molar, how many cusps are visible

A

2, the mesiolingual and mesiobuccal

156
Q

how many roots can you see on the man 1st molar from the mesial view

A
  1. because the mesial root is longer and broader than the distal root
157
Q

does the mesial root of man 1st molars usually have a depression on it

A

yes, it usually has two, one on the mesial surface and one on the distal surface

158
Q

How many canals does the mesial root of the man 1st molar usually have

A

2

159
Q

which of the molars have a lingual tilt of their crown

A

the mandibular molars

160
Q

do the mandibular molars have a lingual tilt of their crown

A

yes

161
Q

when working on mandibular molars, should you hold your bur parallel to the long axis of the tooth

A

no, you should hold it to the long axis of the crown

162
Q

on what surface of the tooth is the distal cusp of the man 1st molar

A

it is considered as being on both the distal and buccal surfaces (occlusal as well)

163
Q

from the distal view of the man 1st molar, how many roots can you see

A
  1. because the distal root is shorter and thinner than the mesial root
164
Q

does the distal root of the man 1st molar usually have longitudinal depressions. compare them to those on the mesial root

A

yes, but they aren’t as prominent as those on the mesial root

165
Q

how many canals does the distal root of the man 1st molar usually have

A

1 (but it may have two)

this one will be wide buccolingually

166
Q

what is the occlusal crown outline shape for man 1st molars

A

hexagonal

167
Q

does the crown of the man 1st molar converge or diverge from the mesial to the distal

A

it converges from the mesial to the distal

168
Q

how does the buccolingual dimension on the mesial end of the man 1st molar compare to the buccolingual dimension on the distal end

A

it is greater at the mesial end

169
Q

does the occlusal crown surface of the man 1st molar converge or diverge from buccal to lingual

A

it converges from buccal to lingual

170
Q

Name the 5 cusps from largest to smallest on the man 1st molar

A

mesiobuccal cusp
mesiolingual cusp = distolingual cusp
distobuccal cusp
distal cusp

171
Q

How many developmental grooves are there on the man 1st molar. what are they named

A 
4
central groove
mesiobuccal groove
distobuccal groove
lingual groove
172
Q

what are the different letters compared to the groove patterns of the man 1st molar

A

W, M, and Y
W and M demonstrate the wandering central groove
Y demonstrates the lingual groove and the mesio and distobuccal grooves

173
Q

does the man 1st molar have a transverse ridge?

A

no, although all cusps have a triangular ridge, none of them meet

174
Q

How many major fossa does the man 1st molar have

A

1 (central fossa)

175
Q

how many minor fossa does the man 1st molar have

A

2 (mesial and distal triangular fossa)

176
Q

how many canals does the man 1st molar usually have

A

3 (2 in the mesial root)

177
Q

what is the shape assigned to the two roots of the man 1st molar (when sliced transversely)

A 
mesial = dumbell shaped (two canals, with two depressions)
distal = oval shaped (one wide canal)
178
Q

What are the universal numbers of the man 2nd molars

A

18 and 31

179
Q

how does the crown of the man 2nd molar compare to the crown of the man 1st molar (size wise)

A

it is narrow mesiodistally and shorter occluscervically

180
Q

From the buccal view how many cusps will you see on the man 2nd molar

A

all 4 cusps

181
Q

how many cusps does the man 2nd molar have

A

4

182
Q

why from the buccal view can you see the 4 cusps of the man 2nd molar

A

because the buccal (functional) cusps are shorter than the lingual cusps

183
Q

how doe the buccal cusps of the man 2nd molar compare to the lingual cusps

A

they are shorter and more rounded

184
Q

how many buccal grooves are there on the man 2nd molar? how does that compare to the man 1st molar

A

there is one on the man 2nd molar, there are 2 on the man 1st molar

185
Q

does the single buccal groove of the man 2nd molar usually end in a pit

A

yes

186
Q

how do the roots of the man 2nd molar copare to those of the man 1st molar

A

they are closer together, more parallel, and more distally inclined

187
Q

how does the buccolingual width of the man 2ndmolars mesial root compare to that of the man 1st molars mesial root

A

it is more narrow buccolingually, and may have a curved tip

188
Q

how does the occlusal size of the man 2nd molar crown compare to the occlusal size of the man 1st molar’s crown

A

it is smaller in all dimensions

189
Q

what is the shape assigned to the mandibular 2nd molars occlusal surface

A

rectangular

190
Q

does the man 2nd molars crown taper toward the distal (converge toward the distal)

A

yes, (even though it is said to be a rectangular shape)

191
Q

what about the mandibular 2nd molar makes the tooth converge toward the distal

A

the mesiobuccal prominence on the mesiobuccal line angle

192
Q

name the four cusps of the man 2nd molar from largest to smallest

A 
they are all about the same size
mesiolingual 
mesiobuccal
distolingual
distobuccal
193
Q

what is the shape of the developmental grooves of the man 2nd molar

A

it is a + shape

194
Q

What are the grooves of the man 2nd molar

A

central groove
buccal groove
lingual groove

195
Q

which of the grooves on the man 2nd molar often ends in a pit

A

the buccal groove

196
Q

how many pits does the man 2nd molar have

A

3
mesial (mesial end of central groove)
central (where buccal, lingual, and central grooves meet)
distal (distal end of central groove)

197
Q

how many fossa does the man 2nd molar have

A

3
central
mesial triangular
distal triangular

198
Q

does the man 2nd molar have a transverse ridge

A

yes, in fact it usually has two (one mesial, one distal)

199
Q

how many canals does the man 2nd molar usually have

A

3

200
Q

what are the universal numbers for the man 3rd molars

A

17 and 32

201
Q

what is the crown of the man 3rd molar like

A

outline varies a lot
more rounded
resembles man 2nd molar, but can have 5 cusps

202
Q

what are the roots of the man 3rd molar like

A

shorter than the other two man molar roots
often fused
often these teeth remain impacted and need to be surgically removed

DMD 5300 Dental Anatomy 3 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions