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dental anatomy > max molars > Flashcards

max molars Flashcards

1
Q

Largest crown in mouth

A

Maxillary First Molar

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2
Q

anchor tooth of maxillary dentition

A

Maxillary First Molar

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3
Q

Maxillary First Molar

A

presents basic pattern for permanent maxillary molars

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4
Q

type 5 and 6 vertucci

A
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5
Q

vertucci 7 and 8

A
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6
Q

(59.87%) were Vertucci type 4

A

max 1st molar

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7
Q

—– have some of the highest failure rates in endodontic treatment due to the presence of a second canal in the mesiobuccal root that the clinician fails to detect, debride and obturate.

A

maxillary molars have some of the highest failure rates in endodontic treatment due to the presence of a second canal in the mesiobuccal root that the clinician fails to detect, debride and obturate.

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8
Q

Carabelli Cusp usually absent

A

in Max second molar

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9
Q

max second molar –> different from 1st molar

A

size is smaller with the three roots closer together

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10
Q

Trapezoidal crown outline form

A

Maxillary First Molar(buccal)

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11
Q

Crown slightly shorter occlusocervically than teeth anterior to it

A

max 1st molar

(buccal)

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12
Q

tf

Maxillary First Molar have Two buccal cusps separated by buccal groove

A

t

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13
Q

buccal groove of max 1st molar

A

extends halfway up the buccal side

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14
Q

deepest part of depression on buccal surface of

Maxillary First Molar

A

ocasonal pit

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15
Q

which cusp is larger on buccal side of Maxillary First Molar

MB or DB

A

MB cusp

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16
Q

sharper and longer cusp on buccal side of

Maxillary First Molar

MB or DB

A

DB

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17
Q

MB cusp slopes more or less inclined than DB

(Buccal (Facial) Aspect: of max 1st molar)

A

less

forms an obtuse angle

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18
Q

forms 90 degrees

A

DB cusps on max 1st pre molar

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19
Q

Facial (buccal) cervical ridge

A

passes mesiodistally across cervical third of crown

(buccal aspect of max 1st molar)

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20
Q

is convex and flatter

mesial vs distal profile of max 1st molar

A

mesial profile of max 1st molar

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21
Q

Distal crown profile convex with concavity in cervical third continuing on root

A

max 1st molar

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22
Q

tf Buccal CEJ of max 1st molar

more convex than teeth anterior to it

A

f

Buccal CEJ much flatter than teeth anterior to it

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23
Q

CEJ of Maxillary First Molar

A

may dip toward area of buccal furcation

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24
Q

Maxillary First Molar(buccal view)

—- roots visible from common root trunk;

A

Maxillary First Molar

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25
Q

tf on max 1st molar

root system wider mesiodistally than Crown

A

Crown wider mesiodistally than root system

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26
Q

Root trunk in occlusal third of root (approx. 4mm)

A

max 1st molar

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27
Q

Facial developmental groove and furcation in line

A

max 1st molar

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28
Q

Maxillary First Molar

MB and DB roots may have —– inclination

A

MB and DB roots may have distal inclination

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29
Q

MB and DB roots

A

converge at apical third

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30
Q

—– root seen between two buccal roots of max 1st molar

A

lingual (palatal)

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31
Q

MB root inclination

A

max 1st molar

90 degree

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32
Q

DB root inclinations

A

obtuse

in max 1st molar

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33
Q

tf

MB and DB roots of max 1st molar are wider mesiodistally than buccolingually

A

f

MB and DB roots are wider buccolingually than mesiodistally;

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34
Q

tf

L(P) root of max 1st molar wider mesiodistally than buccolingually

A

t

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35
Q

which direction does crown diverge on lingual surface of

max 1st molar

A

to lingual

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36
Q

tf in lingual surface which cusp is the largest

A

ML of max 1st molar

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37
Q

extends 3/5 of entire width mesiodistally)

A

ML cusp of max first molar

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38
Q

Cusp of Carabelli (fifth cusp) arises from the —— surface of the ML cusp on max 1st molar

A

Cusp of Carabelli (fifth cusp) arises from the lingual surface of the ML cusp

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39
Q

small and rounded

A

DL cusp of max 1st molar

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40
Q

distolingual groove of max 1st molar

A

separate Two lingual cusps

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41
Q

terminate in a lingual pit in the central portion of the lingual surface in max 1st molar

A

distolingual groove

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42
Q

Lingual CEJ of max 1st molar

A

straight to slightly convex

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43
Q

lingual root is broader mesiodistally than buccolingually

A

max 1st molar

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44
Q

Dominant (largest) lingual root has shallow depression along cervical 2/3 of root and across CEJ

A

max 1st molar

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45
Q

tf from lingual view of max 1st molar

mesial outline of MB and DB root seen

A

f

Entire mesial outline of MB root seen but only partial view of DB root

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46
Q

mesial aspect of max 1st molar;

—– —— ridge connects MB and ML cusps;

A

Mesial marginal ridge connects MB and ML cusps;

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47
Q

max 1st molar

A

Crown has trapezoidal outline form

from mesial side

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48
Q

Buccal profile of max 1st molar may appear slightly —–

in middle third (occlusal to cervical ridge)

A

Buccal profile may appear slightly concave in middle third (occlusal to cervical ridge)

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49
Q

Lingual profile uniformly convex with maximum convexity in middle third from mesial view

A

max 1st molar

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50
Q

max 1st molar mesial

A

CEJ shallow (minimum curvature) and irregularly curved toward the occlusal

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51
Q

Root trunk of max 1st molar broad

A

faciolingually

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52
Q

Faciolingual root spread is —- than faciolingual diameter of crown

max 1st molar mesial view

A

Faciolingual root spread is broader than faciolingual diameter of crown

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53
Q

MB root broad —– and projects straight beyond crown surface slightly toward the —-

max 1st molar mesial

A

MB root broad buccolingually and projects straight beyond crown surface slightly toward the buccal

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54
Q

tf on max 1st molar from mesial view

Developmental depression present across 1/3 of MB root

A

f

Developmental depression present across 2/3 of MB root

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55
Q

longest and shaped like a banana

A

lingual root of max 1st molar

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56
Q

lingual root of max 1st molar

A

first extends lingually beyond crown outline,

then curves in toward the buccal

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57
Q

which furcation is visible of max 1st molar

A

ML furcation

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58
Q

max 1st molar mesial view

— cusp more centered over root trunk than – cusp

A

ML cusp more centered over root trunk than MF cusp

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59
Q

Crown is wider and taller on the mesial from mesial view

A

max 1st molar

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60
Q

tf from mesial view of max 1st molar only 2 cusps are visible

A

F

  1. MB (MF) cusp 2. ML cusp 3. Fifth (Carabelli) cusp
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61
Q

mesial view of max 1st molar

roots present

A
  1. Lingual (Palatal) root 2. 2. MB (MF) root
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62
Q

tf Distal marginal ridge longer than mesial marginal ridge buccolingually

max 1st molar

A

Distal marginal ridge shorter than mesial marginal ridge buccolingually

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63
Q

tf more occlusal surface visible from distal view than mesial view of max 1sst molar

A

T

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64
Q

max 1st molar

A

Buccal surface more visible due to rhomboidal crown form (and D taper)

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65
Q

Proximal contact near crown center

A

distal aspect of max 1st molar

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66
Q

which cusp is center more over root of max 1st molar

DL or DF

A

• DL cusp more centered over the root than DF cusp

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67
Q

tf DB root of max 1st molar is smaller than MB root

A

t

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68
Q

total number of roots visible from distal side of max 1st molar

A

3

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69
Q

DL furcation visible -mm from CEJ

max 1st molar

A

DL furcation visible 5mm from CEJ

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70
Q

Distinct – concavity in cervical third of crown and root of max 1st molar

A

Distinct DF concavity in cervical third of crown and root

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71
Q

occlusal of max 1st molar

A

Rhomboid outline form;

72
Q

line angle acute of max 1st molar

73
Q

line nagle obtuse of max 1st molar

(occlusal view)

A

ML and DB line angles

74
Q

Wider buccolingually than mesiodistally

A

max 1st molar

occlusal

75
Q

which side is wider buccolingually

mesia or distal half of max 1st molar

A

(mesial half of tooth wider buccolingually than distal half

76
Q

on max 1st molar

which is wider buccolingually and more prominent

Mesial marginal ridge or distal marginal ridge ?

A

• Mesial marginal ridge wider than distal marginal ridge buccolingually and more prominent

77
Q

oblique ridge of max 1st molar

A

at same level occlusocervically as MMR & DMR)

78
Q

smallest cusp of max 1st molar and not part of occlusal surface

79
Q

arrange the following of max 1st molar

ML DL DB MB Carabelli

A

ML>MB>DL>DB>Carabelli

80
Q

more centered on tooth than any other cusp

and has two triangular ridges

of max 1st molar

81
Q

talon of max 1st molr

82
Q

Trigon of max 1st molar

A

MB ML DB cusp

83
Q

Primary cusp triangle centered over root trunk

A

max 1st molar

84
Q

Oblique ridge (type of transverse ridge) of max 1st molar

A

extends from ML cusp to DB cusp

85
Q

how many total fossa are on occlusal of max 1st molar

86
Q

(central and distal

A

major 2 fossa of max 1st molar

87
Q

mesial triangular fossa and distal triangular fossa

A

2 minor fossa of max 1st molar

88
Q

lingual aspect of max 1st molar

grooves

A
  1. Lingual developmental groove
  2. Developmental groove of the fifth cusp
89
Q
  1. Central developmental groove
  2. Facial (buccal) developmental groove
  3. Transverse groove of the oblique ridge
  4. Distal oblique developmental groove
A

max 1st molar

90
Q

root of max 1st molar

A

Root trunk trifurcated forming 3 root branches: 2 buccal and 1 lingual

91
Q

largest and longest root of max 1st molar

A

lingual root

92
Q

inclines lingually;

A

lingual root of max 1st molar

93
Q

wider mesiodistally than buccolingually

A

lingual root of max 1st molar

94
Q

shallow depression on lingual surface of root

A

of max 1st molar

95
Q

cervical 2/3

A

max 1st molar lingual root

96
Q

wider buccolingually than mesiodistally

A

MB root of max 1st molar

97
Q

second largest and longest root of maxillary 1st molar

98
Q

two pulp canals: one buccal, one lingual

A

max 1st molar

99
Q

smallest and shortest

A

DB root of max 1st molar

100
Q

slightly wider buccolingually than mesiodistally;

A

max 1st molar ; DB root

101
Q

inclines distally and buccally

A

max 1st molar ; DB root

102
Q

cervical cross section max 1st molar

A

Wider faciolingually than mesiodistally

and has buccal and lingual depressions

103
Q

tf max 2nd molar is smaller and has three roots closer together than max 1st molar

104
Q

Carabelli Cusp usually absent

A

max 2nd molar

105
Q

max M2 buccal view

A

Crown shorter and narrower mesiodistally than M1

106
Q

tf max M2 only has 1 buccal cusp visible from the buccal aspect

A

F

Two buccal cusps visible (MB & DB)

107
Q

wich cusp of max M2 is sharper and more prominent than Max M1

108
Q

tf max M2 has a Facial cervical ridge more pronounced than M1

A

Facial cervical ridge less pronounced than M1

109
Q

tf all Three roots visible of Max M2 from buccal side

110
Q

three roots of max 2nd molar

111
Q

max 2nd molar (mesial view)

A

MB root curves distally with apex over furcation area

112
Q

max M2 buccal

A

Buccal furcation slightly distal to the facial developmental groove

113
Q

M2 vs M1 root

A

Roots shorter, closer to each other, and inclined more distally than M1

114
Q

tf all the roots of max M2 are parrallel to each other

115
Q

from lingual aspect of max M2

A

all rooots and cusps visible

116
Q

the cusps of Max M2

A

DL ML

MB DB

117
Q

which cusp is smaller on the max M2

DL or ML

118
Q

tf max M2 has o fifth (Carabelli) cusp

A

F

No fifth (Carabelli) cusp usually

119
Q

Palatal (lingual) root of Max M2(lingual aspect)

A

root smoothly convex

120
Q

Apex of palatal root

Max M2(lingual)

A

over DL cusp

121
Q

DL groove of Max M2

A

terminates at a point further distal and occlusal than Max M1

(ends more midlingually)

122
Q

mesial aspect of max M2

A

Two cusps and two roots visible

123
Q

L (P) root and MB root

A

max M2 mesial

124
Q

cusps visible from mesial side of Max M2

A

ML cusp , MB cusp

125
Q

Facial cervical ridge of Max M2 (mesial view)

A

less prominent than M1

126
Q

missing and not as pronounced

A

Cervical concavity or flattening on mesial aspect of max M2

127
Q

centered mesial contact

A

max 2nd molar(mesial aspect)

128
Q

tf Max M2 has a convex CEJ

129
Q

Less pronounced mesial marginal ridge

that is perpendicular to marginal ridge

A

max 2nd molar

130
Q

MB and L roots of max M2

A

less divergent

131
Q

MB and L roots of max M2

A

located well within the crown outline

132
Q

tf from distal aspect of Max M2

all the cusps and roots are visible

133
Q

tf Faciolingual root dimension of max M2 smaller than M1

134
Q

which cusps of max M2 are shorter

135
Q

tf from distal view of max M2 there is no occlusal surfce visible

A

F

more of occlusal surface is visible because of

Smaller DB and DL cusps

136
Q

distal contact of max M2

A

is more centered

137
Q

Crown of max M2 tapers toward distal

A

thus more B and L surface visible

138
Q

Lingual cusps of max M2 (distal view) over

A

lingual root

139
Q

tf max m2 (distal view ) have a longer root trunk

140
Q

tf M1 and M2 maxilary both have db concavity

A

F

max M2 has no Db concavity

141
Q

tf

MB and DL line angles of Max M2 are less acute than in

Max M1

A

F

more acute

142
Q

rhomboid

A

outine form of max M2

143
Q

tapers toward lingual and more constricted

Max M1 or Max M2

A

Max M2 (occlusaL)

144
Q

largest cusp of MaxM2

145
Q

DL cusp

A

small in Max M2

146
Q

tf Max M1 and M2

have same groove pattern and fossa configuration

147
Q

tf Max M1 and M2 have different ridge configuration

A

F they are the same

148
Q

max 2nd molar

A

Buccal roots inclined distally and closer together

149
Q

tf buccal roots of Max M2 are shaped like pliers

A

F

more parralel to each other

150
Q

which has smaller lingual root

Max M1 or M2

151
Q

lingual root incline distally

152
Q

tf max m2 have multiple pulp canal per root

153
Q

One pulp —– per cusp in max m2

A

One pulp horn per cusp

154
Q

facial aspex of Max M3

A

very variable

155
Q

tf max M3 is large than M2 and smaller thanM1

A

F

smaller than both

156
Q

More rounded crown form

A

Maxillary Third Molar

157
Q

—— area of Max M3 more narrow

A

Cervical area more narrow

158
Q

Roots of Max M3

A

fused and more curved toward distal

159
Q

Max M3

A

one large lingual cusp

(can have DL cusp but mostly absent)

160
Q

tf in Max M3 only Crown converge dramatically toward lingual

A

f

Crown and root system converge dramatically toward lingua

161
Q

Root system of Max M3 compact and curves toward —-

A

Root system compact and curves toward distal

(lingual view)

162
Q

mesial outline of max m3

A

resembles general outline of maxillary molars

163
Q

from mesial view of max M3 which cusp are visible

A

MB and L cusps

164
Q

Max M3 mesial view ;

CEJ —– in form

A

CEJ irregular in form

165
Q

max thrid molar (mesial view)

A

Fused root system with furcation in apical third of root

166
Q

which view of Max M3 are more anatomic features visible

167
Q

tf on max M3 Crown height shorter on distal view

168
Q

More occlusal surface visible

A

from distal view of Max M3

169
Q

variable

A

occlusal aspect of max M3

170
Q

tf occlusal view of Max M3 is trapezoid shape

A

F

heart shape

171
Q

longest cusp of max M3

A

lingual cusp

172
Q

tf on occlusal view of Max M3

crown tapers only to distal view

A

F

Crown tapers dramatically toward distal and lingual

173
Q

tf occlusal groove pattern of Max M3 has secondary groove pattern

174
Q

Primary triangle

A

occlusal view of Max M3

175
Q

irregular outline form and multiple depressions

A

cervical cross sectional of Max M3

176
Q

tf we have larger jaws than ancestors

and we have plety of room to house 32 teeth

A

F

ur wisdom teeth often become impacted, or blocked from erupting.’

dental anatomy (12 decks)

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