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Dental Morphology > Test 5 > Flashcards

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

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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

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3
Q

which molars have their cusps more even in length maxillary or mandibular

A

mandibular

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4
Q

Maxillary 1st molar has how many developmental grooves on buccal surface? How many does the mandibular 1st molar have

A

1, 2

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5
Q

which molar crowns are wider mesiodistally than buccolingually resulting in a more rectangular or pentagon outline.

A

mandibular

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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

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7
Q

______molars have 4 fossae whereas ______molars have 3 fossae with a large central fossa

A

maxillary, mandibular

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8
Q

Does the central groove of the maxillary molars cross the oblique ridge

A

no

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9
Q

________molars have a central groove that crosses the center of the tooth, creating a “Y” or “+” shaped groove pattern.

A

mandibular

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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

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11
Q

Mandibular developmental groove is centered on tooth what is the developmental groove like on the maxillary

A

off center

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12
Q

At what age do 1st molars erupt

A

6 years old

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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

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14
Q

Maxillary 1st molar develops from how many lobes

A

4

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15
Q

Largest buccolingual crown dimension (shared with maxillary 2nd molar) is which tooth

A

maxillary 1st molar

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16
Q

Greatest equality of buccolingual & mesiodistal dimensions of any maxillary posterior tooth

A

Maxillary 1st molar

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17
Q

which tooth contains a cusp of carabelli

A

Maxillary 1st molar

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18
Q

the maxillary 1st molar’s Mesiolingual cusp has 2

______ ridges

A

triangular

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19
Q

where is the cusp of carabelli located

A

located on the mesiolingual portion of the mesiolingual cusp

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20
Q

How many cusps does the maxillary 1st molar have

A

4 cusps, 1 small cusp of carabelli

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21
Q

which cusp of the maxillary 1st molar is the longest & largest cusp of all posterior teeth

A

The mesiolingual

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22
Q

Generally, largest (surface area) tooth in oral cavity is which tooth

A

maxillary 1st molar

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23
Q

which molar is heart shaped

A

maxillary 3rd molar

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24
Q

what three cusps of the maxillary 1st molar form a triangle

A

MB, ML, DB

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25
Q

which of the four cusps of the maxillary 1st molar is least developed

A

distolingual

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26
Q

The outline of the occlusal surface resembles a ________with 2 acute and 2 obtuse angles for maxillary 1st molar

A

parallelogram (rhomboidal)

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27
Q

The acute angles are the mesiobuccal and distolingual angles. The obtuse angles are the mesiolingual and distobuccal angles. True or False

A

True

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28
Q

which cusp of maxillary 1st molars is present about 70% of the time.

A

The cusp of Carabelli (5th cusp)

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29
Q

List the size order of maxillary 1st molar cusps from largest to smallest

A

Mesiolingual, Mesiobuccal, Distobuccal, Distolingual, Cusp of Carabelli - Smallest

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30
Q

List order of the maxillary 1st molar cusp heights from largest to smallest

A

Mesiolingual, Distobuccal, Mesiobuccal, Distolingual

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31
Q

List order of the maxillary 1st molar fossa sizes from largest to smallest

A

Central, Distal, Mesial Triangular, Distal Triangular

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32
Q

The oblique ridge is formed by the union of the ________ridge and the________ ridge of the mesiolingual cusp.

A

distobuccal triangular ridge and the distal triangular ridge

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33
Q

The large mesiolingual cusp has two what

A

triangular ridges

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34
Q

what does the maxillary 1st molar have on the buccal surface

A

large buccal groove

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35
Q

what is the crown outline shape of the maxillary 1st molar

A

trapezoid

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36
Q

From the buccal view of the maxillary 1st molar how many cusps can you see? which one is missing

A

3, distolingual is missing

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37
Q

Which cusp is wider mesiobuccal or distal buccal cusp

A

The mesiobuccal cusp is broader (wider) than the distobuccal cusp.

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38
Q

which is the sharpest cusp of the maxillary 1st molar

A

distal buccal cusp

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39
Q

the buccal groove can sometimes end in what

A

a pit

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40
Q

How many roots does the Maxillary 1st molar have? which is the longest and largest

A

3, the palatal

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41
Q

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

A

maxillary 1st molar

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42
Q

what is noticeable on the buccal side of the root

A

deep developmental depression

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43
Q

Little if any of the proximal surfaces are visible from which view

A

lingual view

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44
Q

which cusp is the largest and longest from the palatal view

A

mesiolingual

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45
Q

the cusp of carabelli is on which surface of what cusp

A

lingual surface of mesiolingual cusp

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46
Q

which is largest and longest root

A

palatal root

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47
Q

how many roots are visible from the palatal view, is it the largest in the maxilla

A

all three, no third largest

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48
Q

how many cusps are visible from the mesial view for maxillary 1st molar

A

2 cusps

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49
Q

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.

A

tubercle

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50
Q

The buccolingual position of the mesial proximal contact is located ________of the crown. It’s form is round to somewhat ovoid.

A

buccal to the center

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51
Q

From the mesial view which root is not visible

A

distobuccal root

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52
Q

The outline form of the lingual surface (both crown and root) resemble a_____curve similar to the human spinal column.

A

sigmoid

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53
Q

The palatal root “diverges boldly to the ______direction“. The palatal root is bent like a “banana”

A

lingual

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54
Q

How many cusps are visible from distal view

A

all four cusps

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55
Q

Which root is the smallest, shortest, and weakest root and it is a little larger buccolingually than mesiodistally.

A

The distobuccal

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56
Q

How many roots can you see from the distal view of maxillary 1st molar

A

3

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57
Q

At what age do the maxillary second molars erupt and how many teeth back from the midline is it

A

12 years, 7th tooth from the midline

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58
Q

Describe roots of maxillary second molars compared to the 1st, what is not present on second molars

A

roots are longer and not as spread, cusp of carabelli

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59
Q

which two cusps of the maxillary second are not as large and well developed as they are in the Maxillary 1st molar

A

Distal buccal and distal lingual

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60
Q

the maxillary second premolars feature what shape from the occlusal view and what from the buccal view

A

rhomboid, trapezoid

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61
Q

The crown of the maxillary second molar possesses a ____ taper due to the smaller distolingual cusp, it also has a ____crown convergence

A

lingual, lingual

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62
Q

which cusp is noticeably smaller in the maxillary second molars

A

distobuccal cusp

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63
Q

There are____ fossae on the occlusal surface and their order of size from largest to smallest is: central; distal; mesial triangular; and distal triangular.

A

4

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64
Q

How many and what kind of ridges are found on maxillary second molar

A

5 triangular ridges, 1 oblique ridge, 1 transverse ridge

65
Q

In which direction do the roots lean for the maxillary second molar

66
Q

The distal marginal ridge is located farther cervically than the mesial marginal ridge. True or false for maxillary 2nd molar

67
Q

The mesiobuccal root is not wider buccolingually than the distobuccal root True or false

68
Q

More variations than all other (max./mand.) posterior teeth regarding size, root numbers, crown and root forms, for which molar

A

Maxillary 3rd molars

69
Q

Crown is smaller & roots are shorter than 2nd molar, with a tendency toward fusion into one tapered root for which molar

A

maxillary 3rd molar

70
Q

which tooth has a heart shaped crown and has a small occlusal table

A

Maxillary 3rd molar

71
Q

The buccolingual dimension of the mesial half of the crown is considerably larger than the distal half. for maxillary 3rd molars, True of false

72
Q

The crown of the maxillary 3rd molars tapers from where to where

A

mesial to distal

73
Q

What is common for maxillary third that is also in maxillary second in regards to crown convergence

A

converges lingually

74
Q

The form of the lingual aspect of the crown is what shape

A

semi circular

75
Q

How many functional cusps are typical on a maxillary third molar

76
Q

which cusp is diminished in size and sometimes not present on maxillary 3rd molars

A

distolingual cusp

77
Q

which ridge is poorly developed and most times absent for maxillary third molar

A

oblique ridge

78
Q

There are many supplemental grooves on maxillary 3rd molar giving it what appearance

79
Q

the maxillary 3rd molars have generally how many roots that have a long root trunk prior to furcation

80
Q

the roots of maxillary 3rd molar are uniquely what in size

81
Q

which teeth have the greatest morphologic variance of all posterior teeth

A

maxillary 3rd molars

82
Q

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.

A

maxillary 2nd

83
Q

the distal buccal cusp is much smaller on which maxillary molar

A

maxillary second

84
Q

which molar crowns are more bulbous than first and second molars and their crowns exhibits more rounding than first or second molar crowns.

A

maxillary third

85
Q

When viewing second molars occlusally, the angle between the buccal and mesial surfaces (mesiobuccal angle) is more_____than it is on first molars.

86
Q

Mesiolingual cusp larger than distolingual cusp on which two maxillary molars

A

1st and second

87
Q

How many oblique ridges? transverse ridges ? and triangular ridges does the mandibular 1st molar have

A

none, 2, 5

88
Q

Which tooth plays a role in support of cheeks as well as keeping the chin a proper distance from the nose

A

mandibular 1st molar

89
Q

How many roots does the mandibular 1st molar have

90
Q

If you dont have which teeth, does the rest of teeth tend to drift mesially

A

mandibular 1st molars

91
Q

which is the first permanent molar to erupt, that is said to be largest and strongest mandibular molar

A

Mandibular 1st molar

92
Q

which is referred to as your six year molars

A

mandibular 1st molar

93
Q

Mandibular 1st molars are said to be what in the mandibular arch

A

largest tooth

94
Q

how many cusps does the mandibular 1st molar have

95
Q

how many lobes does the mandibular 1st molar have

96
Q

Largest mesiodistal crown dimension of any tooth in oral cavity is which tooth

A

mandibular 1st molar

97
Q

which has the longest root of any molar

A

mandibular 1st molar

98
Q

Mesial root has greatest

buccolingual dimension of any root for which tooth

A

mandibular 1st molar

99
Q

from the occlusal surface, which surface is most visible

A

buccal view

100
Q

what kind of crown convergence appears in the mandibular 1st molar

A

a distal and lingual crown convergence

101
Q

what is the shape of the occlusal table of the mandibular 1st molar

A

rectangular

102
Q

the mesial and distal contact of the mandibular 1st molar is in what direction of the center of the crown

103
Q

List in order the largest to smallest cusps of the mandibular 1st molar

A

largest to smallest: mesiobuccal, the two lingual cusps which are almost equal in size, distobuccal, and distal.

104
Q

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

A

buccal view = 5 and lingual view =3

105
Q

List the order of cusp heights from largest to smallest for the mandibular 1st molar

A

highest to shortest: mesiolingual, distolingual, mesiobuccal, distobuccal, and distal.

106
Q

How many fossa does the mandibular 1st molar have

107
Q

Describe the shape of the mandibular 1st molar developmental groove

A

zig zag shape

108
Q

The triangular ridges of the mesiobuccal and mesiolingual cusps and also the distobuccal and distolingual cusps meet to form a?

A

a transverse ridge.

109
Q

which cusps are longer on mandibular 1st molar, buccal or lingual? making which triangular ridges longer

A

lingual, lingual

110
Q

Which cusp is the largest, widest, and highest of the 3 buccal cusps for mandibular 1st molar

A

mesiobuccal cusp

111
Q

Is the distal cusp of the mandibular 1st molar the sharpest

112
Q

the buccal cusps of the mandibular 1st molar are relatively what compared to the lingual

113
Q

The mesiobuccal groove is ____ than the distobuccal groove and may have a deep pit at its cervical end.

114
Q

The ______ groove does not frequently have a pit at its cervical termination of the mandibular 1st molar

A

distobuccal groove

115
Q

which mandibular molar has short roots that are spread wide apart

A

mandibular 1st molar

116
Q

The buccal height of contour is actually a mesiodistal ridge called the

A

buccal cervical ridge

117
Q

for the mandibular first molar the mesial root is described as what compared to the distal root

A

longer and not as straight as the distal root

118
Q

The mesial root is ______on the root trunk in such a way that it is frequently possible to see the distal surface.

119
Q

The distal root apex extends____ to the distal surface of the crown.

120
Q

for the mandibular 1st molar where are the most carious lesions found, on what surface and why

A

more on the buccal surface, less on lingual because of saliva

121
Q

the lingual groove for the mandibular 1st molar is what compared to the buccal groove

A

The distal root apex extends distal to the distal surface of the crown.

122
Q

what is the mesial crown outline of the mandibular 1st molar

A

rhomboidal

123
Q

which marginal ridges usually has a groove for the mandibular 1st molar

A

mesial and distal marginal ridge

124
Q

the mesial root surface of the mandibular 1st molar contains what? from the mesial view can you see the distal root

A

developmental depression, no you cannot see distal root

125
Q

More of the occlusal surface is visible from a_____ view than mesial view because the _____surface is shorter occlusocervically.

A

distal, distal

126
Q

which is larger contact area for mandibular 1st molar, mesial or distal

127
Q

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

128
Q

Mandibular second molars erupt at what age

129
Q

Mandibular second molar lacks which cusp, how many cusps does it have

A

distal cusp, only has 4 cusps

130
Q

what is the shape of the central groove for the mandibular second molars

A

cross shaped, not a zig zag

131
Q

is the mesial distal crown dimension longer than the cervicoinsical crown dimension for most molars

132
Q

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

A

trapezoid, rectangular, rhomboidal

133
Q

The buccal cervical ridge is prominent for which mandibular molars, which have a buccal surface that tapers in which direction

A

mandibular second molars, taper lingually

134
Q

there is a prominent bulge (buccal cervical ridge) on the mesiofacial aspect of the crown for which tooth

A

mandibular second molars

135
Q

from the occlusal view the crown tapers in which direction for mandibular second molars

136
Q

List the cusp heights of the mandibular second molars, highest to lowest

A

highest to shortest: mesiolingual, distolingual, mesiobuccal, and distobuccal.

137
Q

which mandibular molar has many transverse ridges

A

mandibular second molar

138
Q

which tooth has longer roots, with the mesial being longer than the distal in both.

A

mandibular second molar

139
Q

which root trunk is longer before furcation mandibular 1st or 2nd

140
Q

which mandibular molar is said to be symmetric

A

mandibular second

141
Q

Mandibular third molar varies more in size/shape than any other molar, except

A

maxillary 3rd molar

142
Q

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

A

mandibular 3rd molar

143
Q

which tooth has the most distal inclination in the mandibular arch

A

mandibular 3rd molar

144
Q

the occlusal outline of the mandibular third molar is said to be what in shape

145
Q

can the mandibular third molar have more than the traditional 4 cusps

146
Q

which cusp is the largest in the mandibular 3rd molar

A

mesiolingual cusp

147
Q

the buccal surface is extremely what in the mandibular 3rd molar

148
Q

the distal root is not narrower and not shorter than the mesial root for the mandibular 3rd molar True or false

149
Q

The roots are almost invariably short, fused, and have a marked distal inclination, may have up to 8 roots for what tooth

A

mandibular 3rd molar

150
Q

Developing distal to this right mandibular third molar is what in some instances These can also be considered a fourth molar.

A

peridens or supernumerary tooth

151
Q

the occlusal crown outline is more what in shape in the mandibular 1st molar than the rectangular shape found in mandibular second molars

A

pentagonal

152
Q

Mandibular first molars usually have a total of ___cusps whereas second and third molars usually have ___ cusps.

153
Q

mandibular second molar cusps are more what than 1st molar cusps

154
Q

how many buccal cusps are on the mandibular 1st molars, how many on second and third molar

155
Q

mandibular first molars have how many buccal grooves, how many buccal grooves do the second and third have

156
Q

Mandibular molars have 2 _____ cusps and are approximately the same size.

157
Q

The crown tapers lingually more on first molars than second molars. True or false

158
Q

Distal marginal ridge is more cervical than the mesial marginal ridge for which two mandibular molars

A

mandibular 1st and second molars

159
Q

Distal proximal contact is more cervical than mesial contact for which two mandibular molars

A

mandibular 1st and second molars

Dental Morphology (5 decks)

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