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NBDE dental anatomy > page 642-651 > Flashcards

page 642-651 Flashcards

1
Q

Lat Inc.

A

Third most common congenitally missing tooth (next to third molars).

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2
Q

Lat Inc.

A

Third most variable tooth form (next to third molars).

Peg lateral (microdont)

■ Dens-in-dente

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3
Q

Lat Inc

A

Most common tooth to have a palato-radicular groove

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4
Q

Occlusal shape is oval; proximal shape is triangular.

■

A

Lat inc

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5
Q

MMR (straight) > DMR.

■ M-I corner sharper than D-I.

A

Lat Inc.

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6
Q

M-D dimension > F-L (from occlusal).

A

Lat Inc Max

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7
Q

■ Most developed lingual anatomy of all anterior teeth.

A

Max Lat Inc

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8
Q

Lingual surface is the most concave of all incisors.

■

A

Max Lat Inc

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9
Q

Cingulum: central. Often prominent (talon cusp),

creating a lingual pit.

A

Max Lat Inc

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10
Q

Root just as long as maxillary central.

■ Typically curves to the distal.

A

Max Lat Inc

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11
Q

Occludes with mandibular lateral incisor and canine.

A

max Lat Inc

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12
Q

Longest tooth.

■ Longest cusp.

A

Max canine

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13
Q

Third longest crown (next to mand canine and max central).

A

max canine

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14
Q

■ Widest (B-L) anterior tooth.

■ Maxillary tooth least likely to be extracted.

A

max canine

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15
Q

Has prominent facial ridge.

A

max canine

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16
Q

■ Cusp tip centered over root (from facial).

A

max canine

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17
Q

Mesial cusp ridge < distal.

A

max canine

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18
Q

Mesial surface is straighter (less convex) than the distal.

A

max canine

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19
Q

F-L dimension > M-D (from occlusal).

■

A

max canine

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20
Q

max canine

A

Has a prominent lingual ridge, which splits the lingual fossa into mesial and distal fossae.

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21
Q

Cusp tip located slightly M-F (from occlusal).

A

Max canine

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22
Q

Cingulum: central and prominent

A

max canine

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23
Q

Longest root.

■

A

max canine

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24
Q

Root is oval-shaped and flattened M-D (deeper on distal).

A

max canine

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25
Q

Occludes with mandibular canine and first premolar

A

max canine

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26
Q

Largest of all premolars.

A

max FIRST PREMOLAR

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27
Q

Crown morphology

■ Has a prominent buccal ridge.

A

max first premolar

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28
Q

Only permanent tooth with mesial cusp ridge > distal cusp ridge.

A

max first premolar

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29
Q

Has a prominent mesial marginal ridge groove, which can make scaling

difficult.

A

max first premolar

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30
Q

Occlusal shape is hexagonal; proximal shape is trapezoidal

A

max first premolar

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31
Q

max 1st premolar

Occlusal table has long central groove with fewer supplemental

grooves. No central pit, but has mesial/distal pits.

A
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32
Q

2 cusps: buccal (slightly distal), palatal (slightly mesial).

A

max first premolar

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33
Q

Buccal cusp height > palatal

A

max first premolar

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34
Q

max first premolar

A

Only premolar with two roots (B > P).

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35
Q

max first premolar

A

Has a prominent mesial root concavity

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36
Q

Sits most vertically (B-L) in alveolar bone.

A

max first premolar

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37
Q

Occludes with mandibular first and second premolars.

A

max first premolar

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38
Q

Shorter and smaller than maxillary first premolar.

A

max 2nd premolar

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39
Q

Distal cusp ridge > mesial cusp ridge.

A

max 2nd premolar

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40
Q

Has a buccal ridge, but not as prominent as first premolar.

A

max 2nd premolar

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41
Q

Occlusal shape is hexagonal;

proximal shape is trapezoidal

A

max 2nd premolar

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42
Q

tf max 2nd premolar

Occlusal table is more ovoid and symmetrical than maxillary first premolar

A

T

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43
Q

max 2nd premolar

A

Occlusal table has a short central groove with more supplemental grooves. Has “wrinkled” appearance.

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44
Q

max 2nd premolar

A

2 cusps: buccal, palatal (slightly mesial).

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45
Q

max 2nd premolar

A

Buccal cusp height = palatal.

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46
Q

Only premolar without a mesial root depression

A

max 2nd premolar

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47
Q

Occludes with mandibular second premolar and first molar.

A

max 2nd premolar

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48
Q

Largest permanent tooth.

A

max 1st molar

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49
Q

Only tooth that is broader lingually than buccally.

A

max 1st molar

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50
Q

Widest tooth (B-L).

A

max 1st molar

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51
Q

First permanent maxillary tooth to erupt.

A

max 1st molar

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52
Q

Only tooth with a pronounced distal concavity at the CEJ, which can make scaling difficul

A

max 1st molar

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53
Q

Has a long buccal groove with a central pit.

A

max 2nd premolar

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54
Q

Has a distolingual groove with a pit (on all maxillary molars

A

max 1st molar

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55
Q

Occlusal shape is rhomboidal; proximal shape is trapezoidal.

A

max 1st molar

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56
Q

4 cusps: MB, ML (largest), DB, DL (smallest).

A

max 1st molar

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57
Q

fifth cusp of Carabelli lingual to ML cusp.

A

max 1st molar

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58
Q

Primary cusp triangle: formed by ML, MB, and DB cusps (same for

all maxillary molars).

A

max 1st molar

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59
Q

Secondary cusp triangle: formed by DL cusp.

A

max 1st molar

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60
Q

Cusp heights: ML > MB > DB (primary cusp triangle) > DL (secondary cusp triangle) > Carabelli.

A

max 1st molar

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61
Q

Only tooth with two triangular ridges on one cusp (ML cusp): form the transverse and oblique ridges.

A

max 1st molar

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62
Q

most prominent oblique ridge of all maxillary molars.

A

max 1st molar

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63
Q

max 1st molar

A

transverse groove of the oblique ridge connects the central and distal fossae

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64
Q

3 roots: MB, DB (shortest), palatal (longest).

A

max 1st molar

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65
Q

Distance from furcation entrance to CEJ:

Mesial (3.6 mm) < buccal (4.2 mm) < distal (4.8 mm).

A

max 1st molar

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66
Q

Apices are closest to maxillary sinus.

A

max 1st molar

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67
Q

MB and DB roots are often shaped like “plier handles.”

A

max 1st molar

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68
Q

MB root has more common (94%) and deeper (0.3 mm) concavities than other roots.

A

max 1st molar

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69
Q

Occludes with mandibular first and second molars

A

max 1st molar

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70
Q

Similar to maxillary first molar but smaller and more angular.

A

max 2nd molar

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71
Q

Second most common tooth to have cervical enamel projections (next

to mandibular second molar).

A

max 2nd molar

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72
Q

Closest tooth to the opening of Stenson’s (parotid) duct.

A

max 2nd molar

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73
Q

Has a short buccal groove without a pit.

A

max 2nd molar

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74
Q

max 2nd molar

A

Occlusal table is usually rhomboidal, but can be heart-shaped if the

DL cusp is absent; proximal shape is trapezoidal.

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75
Q
A
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76
Q

4 cusps: MB, ML (largest), DB, DL (smallest).

A

max 2nd molar

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77
Q

Has smaller oblique ridge with a transverse groove.

A

max 2nd molar

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78
Q

Roots are typically longer, closer together, and more distally inclined

than the maxillary first molar. Occasionally fused.

A

max 2nd molar

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79
Q

max 2nd molar

A

Longer root trunk than maxillary first molar.

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80
Q

Occludes with mandibular second and third molars.

A

max 2nd molar

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81
Q

Most variable shape of any other tooth (with mandibular third molar).

A

max 3rd molar

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82
Q

Second most congenitally missing tooth (next to mandibular third

molar).

A

max 3rd molar

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83
Q

Shortest permanent tooth.

A

max 3rd molar

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84
Q

Most common tooth to have enamel pearls (with mandibular third molars).

A

max 3rd molar

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85
Q

Shortest maxillary crown.

A

max 3d molar

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86
Q

Occlusal table is usually heart-shaped since DL cusp has little or no

development; proximal shape is trapezoidal

A

max 3rd molar

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87
Q

Crown tapers lingually.

A

max 3rd molar

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88
Q

3 cusps: MB, DB, lingual.

A

max 3rd molar

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89
Q

Oblique ridge is poorly developed and often absent

A

max 3rd molar

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90
Q

Roots are often fused and distally inclined.

A

max 3rd molar

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91
Q

Occludes only with mandibular third molar

A

max 3rd molar

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92
Q

Smallest tooth.

■ Narrowest (M-D) tooth.

■ Most symmetrical tooth.

A

mand CI

93
Q

Greatest mesial CEJ contour of mandibular teeth.

■ First succedaneous tooth to erupt

A

mand CI

94
Q

MMR = DMR

A

Mand CI

95
Q

D-I corner is equally as sharp as M-I.

A

mand CI

96
Q

Incisal edge lingual to long axis (from proximal).

A

mand CI

97
Q

mand CI

A

F-L dimension > M-D (from occlusal).

98
Q

Incisal edge perpendicular to B-L bisector (from occlusal).

A

mand cI

99
Q

Cingulum: central and indistinct

A

mand cI

100
Q

Root has mesial and distal (deeper) concavities (hourglass shaped).

■ Longer than maxillary centra

A

mand CI

101
Q

Occludes with maxillary central incisor.

■ Only anterior tooth to occlude with one tooth.

A

mand CI

102
Q

Slightly larger in all dimensions than the mandibular central.

■ Second smallest tooth (next to mandibular central).

A

mand LI

103
Q

mand LI

A

Not as symmetrical as the mandibular central

104
Q

Crown is tilted distally on the root (from facial).

A

mand LI

105
Q

MMR > DMR.

■ Incisal edge lingual to long axis (from proximal).

A

mand LI

106
Q

mand LI

A

F-L dimension > M-D (from occlusal).

■ Incisal edge is twisted disto-lingually (from occlusal).

107
Q

mand LI

A

Cingulum: slightly distal and indistinct

108
Q

Longest root of all incisors.

■

A

mand LI

109
Q

Root has mesial (deeper) and distal concavities (hourglass shaped).

A

mand LI

110
Q

Root has mesial (deeper) and distal concavities (hourglass shaped).

A

mand LI

111
Q

Longest crown.

■ Second longest tooth (next to max canine). Longest tooth in mandible.

A

mand canine

112
Q

Second longest root (next to max canine).

■ Mandibular tooth least likely to be extracted.

A

mand canine

113
Q

Has a facial ridge, but less prominent than max canine

A

mand canine

114
Q

Mesial cusp ridge < distal

A

mand canine

115
Q

Mesial surface is nearly parallel with the long axis.

■ Cusp tip slightly lingual to long axis (from proximal).

A

mand canine

116
Q

F-L dimension > M-D (from occlusal).

A

mand canine

117
Q

Has a lingual ridge, but less prominent than max canine.

A

mand canine

118
Q

Cusp tip located slightly distal (from occlusal).

■

A

mand canine

119
Q

Cingulum: slightly distal and less prominent than max canine

A

mand canine

120
Q

mand canine

A

Root is oval-shaped and flattened M-D (deeper on mesial).

■

121
Q

Anterior tooth most likely to have a bifurcated root.

■ Only root that may be mesially inclined.

A

mand canine

122
Q

mand canine

A

Occludes with maxillary lateral incisor and canine

123
Q

Unique characteristics

■ Smallest of all premolars

A

mand 1st premolar

124
Q

mand 1st premolar

A

Has a prominent mesio-lingual groove.

■ MMR < DMR.

125
Q

mand 1st premolar

A

Occlusal shape is diamond-shaped; proximal shape is rhomboidal

(tilted lingually)

126
Q

Only posterior tooth with an occlusal plane tilted lingually

A

mand 1st premolar

127
Q

Has most prominent transverse ridge of all premolars, which splits

mesial and distal fossae. No central groove.

A

mand 1st premolar

128
Q

2 cusps: buccal (functional), lingual (nonfunctional).

A

mand 1st premolar

129
Q

mand 1st premolar

A

Buccal cusp is larger (2/3 of occlusal surface) than the lingual.

130
Q

Root is broader (B-L), and may have proximal concavities.

A

mand 1st premolar

131
Q

mand 1st premolar

A

Occludes with maxillary canine and first premolar

132
Q

Most congenitally missing premolar.

A

mand 2nd premolar

133
Q

mand 2nd premolar

A

The gingival papilla between the first and second premolar is the shortest

134
Q

Lingual surface is wider (M-D) than that of the mandibular first premolar

A

mand 2nd premolar

135
Q

Lingual surface is wider (M-D) than that of the mandibular first premolar

A

mand 2nd premolar

136
Q

mand 2nd premolar

A

Mesial marginal ridge has slight concavity.

■

137
Q

Only premolar with five lobes: three buccal and two lingual.

A

mand 2nd premolar

138
Q

Occlusal shape is square; proximal shape is rhomboidal (tilted lingually).

A

mand 2nd premolar

139
Q

Y (most common configuration): 3 cusps—buccal > ML > DL,

with a single central pit.

A

mand 2nd premolar

140
Q

H:

mand 2nd premolar

A

2 cusps—buccal and lingual with short central groove

141
Q

U:

mand 2nd premolar

A

2 cusps—buccal and lingual with crescent-shaped central groove.

142
Q

Buccal cusp is shorter and blunter than lingual cusps.

■

A

mand 2nd premolar

143
Q

ML cusp is larger than the DL cusp

A

mand 2nd premolar

144
Q

.

■ Mesial marginal ridge has slight concavity.

A

mand 2nd premolar

145
Q

Root is longer than the mandibular first premolar.

■ Apex closest to mental foramen

A

mand 2nd premolar

146
Q

Occludes with maxillary first and second premolars

A

mand 2nd premolar

147
Q

mand 1st molar

A

Largest mandibular tooth.

■ Widest tooth (M-D).

148
Q

First permanent tooth to erupt, and most often restored/extracted.

A

mand 1st molar

149
Q

Can see all 5 cusps from the buccal.

■ Buccal cusps are shorter and blunter then the lingual cusps.

A

mand 1st molar

150
Q

Occlusal shape is pentagonal; proximal shape is rhomboidal (tilted

lingually 15–20°).

A

mand 1st molar

151
Q

5 cusps: MB (largest), DB, distal (smallest), ML (tallest), DL.

A

mand 1st molar

152
Q

Occlusal pattern resembles a +< with a twisted central groove

A

mand 1st molar

153
Q

Has two transverse ridges, three fossae with pits, two buccal grooves

(MB and DB), and a short lingual groove

A

mand 1st molar

154
Q

mand 1st molar

A

Roots are usually widely separated.

155
Q

The mesial root is longer and wider (B-L).

A

mand 1st molar

156
Q

Both roots have concavities (mesial slightly more prominent).

A

mand 1st molar

157
Q

The root trunk is typically shorter than the mandibular second

molar

A

mand 1st molar

158
Q

mand 1st molar

A

Occludes with the maxillary second premolar and first molar.

159
Q

Most symmetrical molar.

A

mand 2nd molar

160
Q

Most common tooth to have cervical enamel projections

A

mand 2nd molar

161
Q

The B-L dimension is greater at the mesial than distal

A

mand 2nd molar

162
Q

Cusps are same height when viewed from buccal

A

mand 2nd molar

163
Q

Occlusal shape is rectangular; proximal shape is rhomboidal (tilted

lingually 15–20°).

A

mand 2nd molar

164
Q

4 cusps: MB (largest), DB, ML, DL.

A

mand 2nd molar

165
Q

Occlusal pattern resembles a + with a straight central groove.

■

A

mand 2nd molar

166
Q

Has two transverse ridges, three fossae with pits, three secondary grooves,

one buccal groove with a pit, and a short lingual groove.

A

mand 2nd molar

167
Q

Roots are closer together than the mandibular first molar and inclined distally.

A

mand 2nd molar

168
Q

The root trunk is typically longer than the mandibular first molar

A

mand 2nd molar

169
Q

Occludes with the maxillary first and second molar.

A

mand 2nd molar

170
Q

mand 3rd molar

A

Most variable morphology (with maxillary third molar).

171
Q

Most common congenitally missing tooth.

■ Most frequently impacted tooth.

A

mand m3rd molar

172
Q

Most common tooth to have enamel pearls (with maxillary third molars).

A

mand 3rd molar

173
Q

Has bulbous crown that tapers distally.

A

mand 3rd molar

174
Q

mand 3rd molar

A

Occlusal shape can be similar to mandibular first or second molars;

proximal shape is rhomboidal (tilted lingually 15–20°).

175
Q

Occlusal shape can be similar to mandibular first or second molars;

proximal shape is rhomboidal (tilted lingually 15–20°).

A

mand 3rd molar

176
Q

4 or 5 cusps: MB, DB, distal (can be absent), ML, DL.

A

mand 3rd molr

177
Q

MB cusp > DB cusp

A

mand 3rd molar

178
Q

mand 3rd molar

A

Has an irregular groove pattern.

179
Q

Roots are usually short, distally inclined, and often fused.

A

mand 3rd molar

180
Q

Typically has distally inclined root trunk and apices

A

mand 3rd molar

181
Q

mand 3rd molar

A

Occludes with maxillary second and third molar

182
Q

There are 20 total

A

primary teeth

183
Q

There are no premolars.

A

in prim. teeth

184
Q

A-T

A

primary teeth

185
Q

Lighter (whiter) in color

Thinner (only about 1 mm thick)

A

enamel of primary teth

186
Q

Less calcified (more caries prone)

No mamelons (but still develop from lobes)

Stops abruptly at the CEJ

A

enamel of primary teeth

187
Q

Thinner (easier to have pulp exposure)

A

primary teeth

188
Q

More bulbous (larger cervical bulges)

Buccal and lingual surfaces are flatter above the HOC

A

crown of primary teeth

189
Q

Smaller occlusal tables

Fewer grooves and pits (shallower and smoother

A

primary teeth

190
Q

Anterior crowns: wider M-D and shorter inciso-cervically

Posterior crowns: narrower M-D and shorter occluso-cervially

A

crown of primary teeth

191
Q

More constricted (narrower cervix)

A

CEJ of primary teeth

192
Q

Shorter

Narrower

A

root trunk of Primary teeth

193
Q

Longer and more slender relative to crown size

Smaller crown:root ratio

A

root of primary teeth

194
Q

root of primary tooth

A
  • More tapered (anterior teeth)

More divergent (posterior teeth)

195
Q

Allows for proper alignment of the permanent incisors.

■ Occurs in about 50% of primary dentitions.

A

prim. space

196
Q

max primary space

A

Maxillary: Between lateral incisor and canine (mesial to canine).

197
Q

■ Mandibular: Between canine and first molar (distal to canine

A

mand. primary space

198
Q

Maxillary: 68.2 mm (longer).

A

max arc length

199
Q

Mandibular: 61.8 mm.

A

mand arc length

200
Q

Straighter incisal edge than permanent maxillary central.

■ No mamelons.

A

primary central inc.

201
Q

primary CI

A

Prominent facial and lingual cervical ridges.

202
Q

Occludes with mandibular central and lateral incisors.

A

primary CI

203
Q

Straighter incisal edge than permanent maxillary lateral.

■ No mamelons.

A

primary LI

mac

204
Q

Prominent facial and lingual cervical ridges.

A

primary LI

max

205
Q

primary LI

max

A

Occludes with mandibular lateral incisor and canine.

206
Q

primaary canine

max

A

Only primary tooth in which facial shape is pentagonal (not trapezoidal

207
Q

Longer and sharper cusp than permanent maxillary canine

A

primary canine

max

208
Q

primary canine

max

A

Only primary tooth with mesial cusp ridge > distal cusp ridge.

209
Q

Occludes with mandibular canine and first molar

A

primary canine

max

210
Q

primary 1st molar

max

A

Smallest primary molar.

■ Generally resembles a permanent maxillary premolar

211
Q

Occlusal shape is rectangular.

■ Occlusal surface has H-shaped configuration.

A

primary 1st molar

max

212
Q

primry 1st molar

max

A

Has a prominent buccal cervical ridge.

213
Q

primary 1st molar

max

A

4 cusps: MB (largest), ML (sharpest), DB, DL (smallest).

214
Q

primary 1st molar

max

A

Occludes with mandibular first and second molars.

215
Q

Generally resembles permanent maxillary first molar but smaller.

■ Occlusal shape is rhomboidal.

A

prim. 2nd molar

max

216
Q

Widest (B-L) primary tooth.

■ Has a prominent buccal cervical ridge.

A

primary 2nd molar

max

217
Q

prim. 2nd molar

max

A

Has an oblique ridge.

218
Q

4 cusps: MB (largest), ML (almost as large as MB), DB, DL (smallest).

A

primary 2nd molar

max

219
Q

May have a fifth cusp of Carabelli.

A

prim. 2nd molar

max

220
Q

Occludes only with mandibular second molar.

A

primary 1stmolar

MAx

221
Q

Straighter incisal edge than permanent mandibular central.

■ No mamelons.

A

mand CI

222
Q

Prominent facial and lingual cervical ridges.

■ Occludes only with maxillary central incisor.

A

prim. CI

223
Q

Straighter incisal edge than permanent mandibular lateral.

■ No mamelons

A

prim.mand LI

224
Q

Prominent facial and lingual cervical ridges.

■ More exaggerated incisal edge slope than permanent mandibular lateral.

A

prim. mand LI

225
Q

Occludes with maxillary central and lateral incisors.

A

primary mand LI

226
Q

primary mand canine

A

Distal cusp ridge > mesial cusp ridge.

227
Q

primary mand canine

A

Occludes with maxillary lateral incisor and canine.

228
Q

https://drive.google.com/open?id=0B8uJUY-tie8GR2dNMHp6VzlRRVU

A

https://drive.google.com/open?id=0B8uJUY-tie8GRVVybFZMNG1LS3M

229
Q
A

NBDE dental anatomy (5 decks)

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