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Dental Anatomy - Boards > Dental Anatomy - Boards > Flashcards

Dental Anatomy - Boards Flashcards

1
Q

type of dentition where all teeth have the same morphology

A

homodont dentition

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2
Q

type of dentitition where the teeth have different morphologies (human)

A

heterodont dentition

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3
Q

does human have a homodont or heterodont dentition?

A

heterodont dentition (teeth have different morphologies)

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4
Q

word of the species only has one set of teeth? two sets? three sets?

A

one set = monophyodont

two = diphyodont dentition

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5
Q

how many sets of teeth do humans have and whats that called?

A

two = diphyodont dentition

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6
Q

how many anterior teeth do we have?

A

12 (6 per arch)

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7
Q

how many posterior teeth do we have?

A

20 (10 per arch)

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8
Q

what is the difference between an anatomic crown and the clinical crown?

A

anatomic crown: portion of the tooth from the CEJ to the occlusal surface
clinical crown: portion of the tooth seen ABOVE the gingival margin

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9
Q

difference between an incisal edge and occlusal surface?

A

incisal: chewing surface of anterior teeth
occlusal: chewing surface of posterior teeth consiting of cusps, ridges, and grooves

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10
Q

the occlusal surface within the cusp and marginal ridges

A

occlusal table

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11
Q

what is a lobe?

A

represented by cusps, memelons, and cingula, and are seperated by developmental depressions (anterior teeth) and developmental grooves (posterior teeth)

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12
Q

the presence of mamelons in adult occlusion is a sign of what and why?

A

malocclusion

-in normal occlusion the mamelons are worn down by attrition and mastication

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13
Q

what is a mamelon?

A

a round extension of enamel on the incisal edge of all incisors, usually 3 per incisor (1 per lobe), often translucent because of a lack of underlying dentin

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14
Q

a bulbous convexity of enamel located on the cervical third of the lingual surfaces of all anterior teeth

A

cingulum

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15
Q

an extra formation of enamel on the crown of the tooth, often manifests as a supernumerary cusp

A

tubercle aka cusp of carabelli

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16
Q

what teeth have marginal ridges?

A

all

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17
Q

what is a ridge?

A

a linear elevation on the enamel surface

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18
Q

what teeth have a labial ridge and what is it?

A

only on canines

runs incisocervically in the center of the facial crown surface

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19
Q

is the labial ridge more prominant on mandibular or maxillary canines?

A

maxillary canines

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20
Q

what teeth have a buccal cusp ridge and what is it?

A

only on premolars

runs occlusocervically in the center of the buccal crown surface

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21
Q

is the buccal cusp ridge more prominent on first or second premolars?

A

first premolars

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22
Q

what teeth have a cervical ridge? what is it?

A

all primary teeth and permanent molars

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23
Q

what are the only teeth to have oblique ridges?

A

maxillary molars

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24
Q

what is the oblique ridge? where does it run?

A

extends from the mesiolingual (ML) to the distobuccal cusp (DB) cusps and it seperates the mesiobuccal (MB) and distolingual (DL) cusps

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25
Q

what teeth have a triangular ridge? what is it?

A

all posterior teeth

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26
Q

what teeth have two triangular ridges?

A

the ML cusp of all maxillary molars

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27
Q

where can you find a transverse ridge? what is it?

A

most posterior teeth

runs buccolingually and connects opposing buccal and lingual triangular ridges

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28
Q

where can you commonly find transverse ridges?

A

common on maxillary premolars and mandibular molars

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29
Q

what is a sulcus and where can you find it?

A

V-shaped depression on the occlusal surface of posterior teeth between ridges and cusps

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30
Q

what is a fossa?

A

irregularly shaped depression in the enamel surface

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31
Q

a well-defined, shallow, linear depression in enamel that separates the cusps, lobes, and marginal ridges of a tooth?

A

developmental groove

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32
Q

a narrow crevice at the deepest portion of the developmental groove in enamel

A

fissure

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33
Q

a small pinpoint concavity a the termination or junction of developmental grooves

A

pit

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34
Q

an irregularly defined, short groove auxillary to a developmental groove that does not separate major tooth parts

A

supplemental grooves

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35
Q

a space between two adjacent teeth in an arch

A

diastema

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36
Q

a triangular space between the proximal surfaces of adjacent teeth that diverge in four directions from the contact area

A

embrasure

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37
Q

area of multirooted teeth where the roots diverge

A

furcation

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38
Q

what nerves supply the innervation for maxillary and mandibular teeth?

A

maxillary nerve-V2 and mandibular-V3 are branches of the trigeminal (CN-V)

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39
Q

arterial supply to teeth

A

all dental and periodontal arterial supply arises from the maxillary artery
the arterial supply generally parallels the corresponding nerves

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40
Q

venous return from the teeth

A

all dental and periodontal venous return drains to pterygoid plexus of veins all which form the maxillary vein

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41
Q

teeth least likely to get caries

A

mandibular incisors

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42
Q

how many line angles do anterior teeth have? posterior teeth?

A

anterior teeth have 6 line angles

posterior teeth have 8 line angles

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43
Q

how many point angles do teeth have?

A

four

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44
Q

what are the 4 embrasures per contact area?

A

buccal
lingual
occlusal
cervical

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45
Q

how many roots does a maxillary molar have?

A

maxillary molars are generally TRIfuricated

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46
Q

how many roots does a mandibular molar usually have?

A

generally are BIfuricated

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47
Q

what nerve innervates the maxillary first molar?

A

DB root is by the posteriorsuperior alveolar

MB root is by the middle superior alveolar

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48
Q

what does the ASA supply?

A

anterior gingiva

anterior pulps

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49
Q

what does the MSA supply?

A

gingiva of premolars
pulps of premolars
sometimes MB root of 1st molar

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50
Q

what does the PSA supply?

A

gingiva adjacent molars

pulps of molars

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51
Q

what does the buccal nerve supply?

A

the buccal gingiva of the mandibular molars

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52
Q

what does the mental nerve supply?

A

the facial gingiva of the premolars and anterior teeth

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53
Q

what does the IA supply?

A

the pulps of all the mandibular teeth

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54
Q

height of mesial and distal contacts of maxillary central incisor

A

mesial: incisal 1/3
distal: junction

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55
Q

height of mesial and distal contacts of maxillary lateral incisor

A

mesial: junction
distal: middle 1/3

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56
Q

height of mesial and distal contacts of maxillary canine

A

mesial: junction
distal: middle 1/3

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57
Q

height of mesial and distal contacts of maxillary first premolar

A

mesial: middle 1/3
distal: middle 1/3

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58
Q

height of mesial and distal contacts of maxillary second premolar

A

mesial: middle 1/3
distal: middle 1/3

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59
Q

height of mesial and distal contacts of maxillary first molar

A

mesial: middle 1/3
distal: middle 1/3

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60
Q

height of mesial and distal contacts of maxillary second molar

A

mesial: middle 1/3
distal: middle 1/3

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61
Q

height of mesial and distal contacts of maxillary third molar

A

mesial: middle 1/3

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62
Q

height of mesial and distal contacts of mandibular central incisor

A

mesial: incisal 1/3
distal: incisal 1/3

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63
Q

height of mesial and distal contacts of mandibular lateral incisor

A

mesial: incisal 1/3
distal: incisal 1/3

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64
Q

height of mesial and distal contacts of mandibular canine

A

mesial: incisal 1/3
distal: middle 1/3

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65
Q

height of mesial and distal contacts of mandibular first premolar

A

mesial: middle 1/3
distal: middle 1/3

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66
Q

height of mesial and distal contacts of mandibular second premolar

A

mesial: middle 1/3
distal: middle 1/3

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67
Q

height of mesial and distal contacts of mandibular molars

A

mesial: middle 1/3
distal: middle 1/3

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68
Q

height of contour for facial and lingual maxillary central incisor

A

facial: cervical 1/3
lingual: cervical 1/3, cingulum

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69
Q

height of contour for facial and lingual maxillary lateral incisor

A

facial: cervical 1/3
lingual: cervical 1/3, cingulum

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70
Q

height of contour for facial and lingual maxillary canine

A

facial: cervical 1/3
lingual: cervical 1/3, cingulum

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71
Q

height of contour for facial and lingual maxillary first premolar

A

facial: cervical 1/3
lingual: cervical 1/3

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72
Q

all human teeth follow a pattern for height of contour, what is it?

A

anterior facial: cervical 1/3
anterior lingual: cervical 1/3, cingulum
posterior facial: cervical 1/3
posterior lingual: middle 1/3

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73
Q

root length and crown length of maxillary central incisor

A

root: 13mm
crown: 10.5mm

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74
Q

root length and crown length of maxillary lateral incisor

A

root: 13mm
crown: 9mm

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75
Q

root length and crown length of maxillary canine

A

root: 17mm
crown: 10mm

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76
Q

root length and crown length of maxillary first premolar

A

root: 14mm
crown: 8.5mm

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77
Q

root length and crown length of maxillary second premolar

A

root: 14mm
crown: 8.5mm

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78
Q

root length and crown length of maxillary first molar

A

root: 12-13mm
crown: 7mm

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79
Q

root length and crown length of maxillary second molar

A

root: 11-12mm
crown: 6.5mm

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80
Q

root length and crown length of maxillary third molar

A

root: 11mm
crown: 6mm

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81
Q

root length and crown length of mandibular central incisor

A

root: 12.5mm
crown: 9mm

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82
Q

root length and crown length of mandibular lateral incisor

A

root: 14mm
crown: 9.5mm

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83
Q

root length and crown length of mandibular canine

A

root: 16mm
crown: 11mm

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84
Q

root length and crown length of mandibular first premolar

A

root: 14mm
crown: 8.5mm

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85
Q

root length and crown length of mandibular second premolar

A

root: 14.5mm
crown: 8mm

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86
Q

root length and crown length of mandibular first molar

A

root: 14mm
crown: 7.5mm

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87
Q

root length and crown length of mandibular second molar

A

root: 13mm
crown: 7mm

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88
Q

root length and crown length of mandibular third molar

A

root: 11mm
crown: 7mm

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89
Q

lobes and cusps of maxillary anterior teeth

A

1 lobe

1 cusp

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90
Q

lobes and cusps of maxillary first premolar

A

4 lobes

2 cusps

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91
Q

lobes and cusps of maxillary second premolar

A

4 lobes

2 cusps

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92
Q

lobes and cusps of maxillary first molar

A

5 lobes

4or5 cusps

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93
Q

lobes and cusps of maxillary second molar

A

4 lobes

4 cusps

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94
Q

lobes and cusps of maxillary third molar

A

4or5 lobes

3 cusps

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95
Q

lobes and cusps of mandibular anterior teeth

A

4 lobes

1 cusp

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96
Q

lobes and cusps of mandibular first molar

A

4 cusps

2 lobes

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97
Q

lobes and cusps of mandibular second molar

A

5 lobes

2or3 cusps

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98
Q

lobes and cusps of mandibular second premolar

A

5 cusps

2or3 lobes

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99
Q

lobes and cusps of mandibular first molar

A

5 lobes

5 cusps

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100
Q

lobes and cusps of mandibular second molars

A

4 lobes

4 cusps

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101
Q

lobes and cusps of mandibular third molars

A

4 or 5 cusps

4 or 5 lobes

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102
Q

of roots and canals for maxillary anterior teeth

A

1 root

1 canal

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103
Q

of roots and canals for maxillary first premolar

A

2 roots

2 canals

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104
Q

of roots and canals for maxillary second premolar

A

1 root

1 canal

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105
Q

of roots and canals for maxillary first molar

A

3 roots

3 or 4 canals

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106
Q

of roots and canals for maxillary second molar

A

3 roots

3 or 4 canals

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107
Q

of roots and canals for maxillary third molars

A

3 roots

variable canals

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108
Q

of roots and canals for mandibular central incisor

A

1 root

1 canal

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109
Q

of roots and canals for mandibular lateral incisor

A

1 root

1or2 canals

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110
Q

of roots and canals for mandibular canine

A

1 or 2 roots

1 canal

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111
Q

of roots and canals for mandibular first premolar

A

1 root

1 canal

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112
Q

of roots and canals for mandibular second premolar

A

1 root

1 canal

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113
Q

of roots and canals for mandibular first molar

A

2 roots

3 or 4 canals

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114
Q

of roots and canals for mandibular second molar

A

2 roots

3 or 4 canals

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115
Q

of roots and canals for mandibular third molar

A

2 roots

variable canals

116
Q

what is the universal numbering system?

A

32 permanent teeth

teeth are numbered 1 thru 32 starting from the maxillary right 3rd molar and ending with the mandibular right 3rd molar

117
Q

what is the Federation Dentaire Internationale System?

A

each tooth is given a two-digit number, the first digit represents the quadrant in which the tooth is located (1,2,3,4), the second digit indicates the tooth position relative to the midline from closest to furthest away

118
Q

the 3 things that a proximal contact prevents?

A

prevents rotation
prevents mesial drift
prevents food impactions

119
Q

are proximal contacts located buccally or lingually?

A

always bucally

120
Q

the proximal shape of anterior teeth

A

all are triangular

121
Q

the proximal shape of all maxillary posterior teeth

A

trapezoidal

122
Q

the proximal shape of all mandibular posterior teeth

A

rhomboidal

123
Q

whats forms the hight of contour for all anterior teeth?

A

cingulum

always located at the cervical third of the crown

124
Q

two main purposes of the height of contour?

A

help form the mesial and distal contact areas

allows for adeqaute gingival health

125
Q

does the maximum height of contour increase as you move anteriorly or posteriorly?

A

increases as you move anteriorly

126
Q

what tooth has the greatest CEJ contour? how do you figure?

A

maxillary central incisor (mesial)

the mesial CEJ contour is always greater than the distal contour

127
Q

in which direction do the facial and lingual CEJ contours curve?

A

apically

128
Q

in which direction fo the mesial and distal CEJs curve?

A

coronally

129
Q

what premolar has 5 lobes (3 buccal, 2 lingual)?

A

mandibular second premolar

130
Q

what is the maxillary and mandibular arc length?

A

maxillary 128mm

mandibular 126mm

131
Q

what tooth has the most promient CEJ contour?

A

mesial maxillary central

132
Q

what tooth has the second largest crown length?

A

maxillary central

largest is mandibular canine

133
Q

what tooth has the widest crown of all anterior teeth?

A

maxillary central

134
Q

in the maxillary central incisor which dimension is greater? mesiodistal or faciolingual?

A

mesiodistal; faciolingual

135
Q

which tooth has the narrowest incisal embrasures?

A

maxillary central

136
Q

maxillary central has how many developmental grooves?

A

four

137
Q

is the cingulum on the maxillary central located mesially or distally?

A

slightly distally

138
Q

tooth least leakly to have a divided root canal?

A

maxillary central

139
Q

tooth with the roundest root?

A

maxillary central

140
Q

tooth which has the greatest axial inclination

A

maxillary central

141
Q

what tooth occludes with the mandibular central and lateral incisors?

A

maxillary central

142
Q

most common congenitally missing tooth

A

maxillary lateral

143
Q

most common tooth to have a palato-radicular groove?

A

maxillary lateral (2-5%)

144
Q

is the lateral incisor larger mesiodistally or faciolingually?

A

mesiodistally is larger than faciolingual

145
Q

what tooth has the most concave lingual surface?

A

maxillary lateral

146
Q

is the cingulum on the maxillary lateral positioned mesially or distally?

A

cingulum is positioned centrally

147
Q

what shape is the pulp chamber on the maxillary lateral?

A

pulp chamber is egg shaped with the widest portion on the buccal

148
Q

which direction does the root tip tip on the maxillary central

A

root typically dilacerates to the distal

149
Q

what teeth occlude the mandibular lateral incisor and canine?

A

maxillary lateral

150
Q

what is the longest tooth in the mouth?

A

maxillary canine

151
Q

is the maxillary canine larger faciolingually or mesiodistally?

A

faciolingual; mesiodistal

152
Q

what does the lingual look like of a maxillary canine?

A

mesial surface is straighter (less convex) than the distal

153
Q

which tooth has the most prominent labial ridge?

A

maxillary canine

154
Q

where is the cusp top located on the maxillary canine?

A

cusp tip is located on the mesiofacial aspect of the crown

155
Q

which cusp ridge is larger on the maxillary canine?

A

mesial cusp ridge is shorter than the distal

156
Q

where is the cingulum positioned on the maxillary canine

A

cingulum is positioned centrally

157
Q

what is the root shape of a maxillary canine

A

root is oval and flattened mesiodistally

158
Q

what tooth occludes the mandibular canine and first premolar?

A

maxillary canine

159
Q

what is usually the largest premolar?

A

maxillary first premolar

160
Q

what is the only premolar with two roots?

A

maxillary first premolar

161
Q

what tooth has a prominent mesial marginal ridge groove?

A

maxillary first premolar

162
Q

what tooth has an occlusal rectangular shape but the proximal shape is tapezoidal?

A

maxillary first premolar

163
Q

on the buccal cusp of maxillary first premolar, which cusp ridge is longer? mesial or distal?

A

mesial buccal cusp ridge is longer than the distal buccal cusp ridge

164
Q

how are the two cusps positioned on maxillary first premolar?

A

buccal is slightly distal

palatal is slightly mesial

165
Q

which tooth occludes with the mandibular first and second premolars?

A

maxillary first premolar

166
Q

what is the occlusal shape and proximal shape of the maxillary second premolar?

A

occlusal is rectangular

proximal is trapezoidal

167
Q

difference between the groves between maxillary first and second premolar?

A

first has long central groove without pits

second has a short central groove with more supplemental grooves

168
Q

on the maxillary first premolar, which cusp is taller?

A

buccal cusp is longer than lingual

169
Q

on the maxillary second premolar, which cusp is taller?

A

nearly the same heights

170
Q

on the maxillary second premolar how are the two cusps positioned?

A

both cusps are slightly mesial

171
Q

which tooth occludes with mandibular second premolar and first molar?

A

maxillary second premolar

172
Q

what is the largest permanent tooth?

A

maxillary first molar

173
Q

what is the only tooth that is broader lingually than bucally?

A

maxillary first molar

174
Q

what is the only tooth with a pronounced distal concavity at the CEJ?

A

maxillary first molar

175
Q

of the maxillary first molar, what is the occlusal shape and proximal shape?

A

occlusal is rhomboidal

proximal is trapezoidal

176
Q

what is the largest and smallest cusps on the maxillary first molar?

A

largest is ML

smallest is DL

177
Q

which cusps make up the primary cusp triangle on maxillary molars?

A

formed by ML, MB, DB

178
Q

which set of teeth has the most prominent oblique ridge?

A

maxillary molars

179
Q

what does the transverse groove connect on the maxillary molar?

A

transverse groove connects the central and distal pits

180
Q

what are the three roots on a maxillary first molar?

A 
MB
DB (shortest)
palatal (longest)
181
Q

what teeth roots are most likely to perforate the maxillary sinus?

A

maxillary first molar

182
Q

which root on the maxillary first molar has the deepest concavity?

A

MB 94% has a deeper concavity

183
Q

what tooth occludes with the mandibular first and second molars?

A

maxillary first molar

184
Q

how many primary teeth are there?

A

20 (10 per arch)

185
Q

what letters are used to label primary teeth?

A

A thru T

186
Q

are primary teeth darker or lighter than permanent teeth?

A

primary teeth are lighter

187
Q

do primary teeth have more or less grooves and pits?

A

primary teeth have fewer grooves and pits (shallower and smoother)

188
Q

are primary teeth more or less bulbous than permanent teeth?

A

primary crowns are more bulbous

189
Q

is enamel thicker or thinner on permanent teeth?

A

primary teeth have less enamel (1mm)

190
Q

are anterior primary crowns widder or narrower mesiodistally? longer or shorter incisocervically?

A

wider mesiodistally

shorter incisocervically

191
Q

are posterior primary crowns wider or narrower mesiodistally? longer or shorter incisocervically?

A

narrower mesiodistally

shorter occlusocervically

192
Q

what is the primate space? where is it located?

A

allows for proper alignment of the permanent incisors, occurs 50% of primary dentition

max: between lateral incisors and canines
mand: between canines and first molars

193
Q

the two most common teeth to have cervical enamel projections?

A

first - mandibular second molar

second - maxillary second molar

194
Q

the tooth closest to the opening of stensons duct?

A

maxillary second molar

195
Q

of the maxillary second molar, what’s its occlusal shape and whats its proximal shape?

A

occlusal table is rhomboidal but can be heart shaped if the DL cusp is absent
proximal shape is trapezoidal

196
Q

which tooth has a longer root trunk, max first molar or second molar?

A

second molar has a longer root trunk that the maxillary first

197
Q

does the maxillary second molar typically have long or short root trunk and which direction to the roots turn?

A

roots are closer together than the maxillary first and typically turn distally

198
Q

what tooth occludes with the mandibular second and third molars?

A

maxillary second molar

199
Q

what are the arc lengths for primary teeth?

A

maxillary 68.2mm

mandibular 61.8mm

200
Q

what tooth has the most variable shape?

A

third maxillary molar then third mandibular molar

201
Q

what is the shortest permanent tooth?

A

maxillary third molar

202
Q

what are the two most common teeth to have enamel pearls?

A

maxillary third then mandibular third

203
Q

on the maxillary third molar which direction does the crown taper?

A

lingually

204
Q

maxillary third only has 3 cusps, what are they?

A

MB, DB, lingual

205
Q

what is the smallest cusp on the maxillary third molar and sometimes absent?

A

DB cusp

206
Q

t/f roots of maxillary third molar are never fused

A

FALSE roots are often fused

207
Q

what tooth occludes only with the mandibular third molar?

A

maxillary third molar

208
Q

number of cusps and roots on a primary maxillary central incisor?

A

1 cusp

1 root

209
Q

number of cusps and roots on a primary maxillary lateral incisor?

A

1 cusp

1 root

210
Q

number of cusps and roots on a primary maxillary canine?

A

1 cusp

1 root

211
Q

number of cusps and roots on a primary maxillary first molar?

A

4 cusps

3 roots

212
Q

number of cusps and roots on a primary maxillary second molar?

A

4 or 5 cusps

3 roots

213
Q

number of cusps and roots on a primary mandibular incisor?

A

1 cusp

1 root

214
Q

number of cusps and roots on a primary mandibular lateral incisor?

A

1 cusp

1 root

215
Q

number of cusps and roots on a primary mandibular canine?

A

1 cusp

1 root

216
Q

number of cusps and roots on a primary mandibular first molar

A

4 cusps

2 roots

217
Q

number of cusps and roots on a primary mandibular second molar?

A

5 cusps

2 roots

218
Q

does a primary maxillary central incisor have mamelons?

A

no

219
Q

what are the two cervical ridges that are prominent in a primary maxillary central incisor?

A

prominent facial and lingual cervical ridges

220
Q

what primary tooth occludes with mandibular central and lateral incisors?

A

primary maxillary central incisor

221
Q

the mesiodistal width of the primary molars is […]mm greater than the width of the permanent molars

A

the mesiodistal width of the primary molars is 2-5 mm greater than the width of the permanent molars

222
Q

do primary maxillary incisors have mamelons?

A

no

223
Q

what are the prominent cervical ridges on primary maxillary lateral incisor?

A

prominent facial and lingual cervical ridges

224
Q

what primary tooth occludes with the mandibular lateral incisor and canine?

A

primary maxillary lateral incisor

225
Q

what is the smallest permament tooth?

A

mandibular central incisor

226
Q

what is the most symmetrical tooth?

A

mandibular central incisor

227
Q

which dimension is greater on the mandibular central incisor, faciolingual or mesiodistal?

A

faciolingual; mesiodistal

228
Q

on the mandibular central incisor which marginal ridge is longer?

A

both marginal ridges are the same length

229
Q

on the mandibular central incisor is the incisal edge more buccal or lingual to the long axis?

A

the incisal edge is lingual (same as mandibular lateral)

230
Q

on the mandibular central incisor which direction is the cingulum positioned?

A

centrally

231
Q

what is the only anterior tooth to occlude with one tooth? which is it?

A

mandibular central only occludes with maxillary central

232
Q

what is the facial shape of the primary maxillary canine?

A

facial shape is pentagonal

233
Q

which primary canine has a longer and sharper cusp?

A

primary maxillary canine is longer and sharper

234
Q

which cusp ridge is larger on the primary maxillary canine?

A

mesial cusp ridge is longer than the distal cusp ridge

235
Q

what primary tooth occludes with the mandibular canine and first molar?

A

maxillary canine

236
Q

what is the main difference between the mandibular central and lateral incisor?

A

lateral is not as symmetrical, the crown is tilted distally on the root

237
Q

from the occlusal on the mandibular lateral incisor which dimension is larger? faciolingual or mesiodistal?

A

faciolingual; mesiodistal

238
Q

which marginal ridge is longer on the mandibular lateral incisor?

A

mesial marginal ridge is longer than the distal

239
Q

how is the cingulum positioned on the mandibular lateral?

A

positioned slightly distally

240
Q

in which direction is the mandibular lateral incisor twisted?

A

distolingually

241
Q

is the root concavity on the mesial of distal on the mandibular lateral?

A

root has mesial and distal concavity (hourglass shaped)

242
Q

which tooth occludes with the maxillary central and lateral incisors?

A

mandibular lateral incisor

243
Q

what tooth has the longest crown of any permanent tooth?

A

mandibular canine

244
Q

what is the longest tooth in the mandible?

A

mandibular canine

245
Q

what are the two teeth least likely to be extracted?

A

both canines

246
Q

on the mandibular canine which dimension is larger? mesiodistal or faciolingual?

A

faciolingual; mesiodistal

247
Q

on the mandibular canine? which surface is parallel with the long axis?

A

the mesial surface

248
Q

mandibular canine, the cusp tisp is on which aspect of the crown?

A

the lingual aspect of the crown

249
Q

mandibular canine, which cusp ridge is longer?

A

distal is longer than mesial

250
Q

mandibular canine? in which direction is the cingulum positioned?

A

slightly distal

251
Q

what shape is the mandibular canine root?

A

oval, flattened mesiodistally

252
Q

where is the root depression on mandibular canine?

A

mesial depression (may be bifuricated)

253
Q

what tooth occludes with the maxillary lateral incisor and canine?

A

mandibular canine

254
Q

what is usually the smallest premolar?

A

mandibular first premolar

255
Q

what is the occlusal shape of the mandibular first premolar?

A

square

256
Q

what the is the proximal shape of the mandibular first premolar?

A

rhomboidal (tilted lingually)

257
Q

what is the most promienet groove on the mandibular first premolar?

A

mesiolingual developmental groove

258
Q

what is the only posterior tooth with an occlusal plane tilted lingually?

A

mandibular first premolar

259
Q

what tooth has a promient transverse ridge w/o a central groove?

A

mandibular first premolar

260
Q

which marginal ridge is shorter on the mandibular first premolar?

A

mesial marginal ridge is shorter and less prominent than the distal marginal ridge

261
Q

how many cusps are on the mandibular first premolar?

A

two (buccal is 2/3 the occlusal table, lingual 1/3)

262
Q

mandibular first premolar, is the root broader on the lingual or facial?

A

root is broader facially than lingually and may have proximal concavities

263
Q

what tooth occludes with the maxillary canine and first premolar?

A

mandibular first premolar

264
Q

between what two teeth is the gingival papilla between the first and second premolar the shortest?

A

mandibular second premolar

265
Q

what is the occlusal shape of the mandibular second premolar?

A

square

266
Q

what is the proximal shape of the mandibular second premolar?

A

rhomboidal

267
Q

what is the only premolar with 5 lobes?

A

mandibular second premolar
three buccal
two lingual

268
Q

what are the names of the three occlusal configurations of the mandibular second premolar? which is most common?

A

Y (most common)
H
U

269
Q

what is the Y configuration on the mandibular second premolar?

A

three cusps buccal (non-functional)

ML and DL with a central pit

270
Q

what is the H configuration on the mandibular second premolar?

A

two cusps - buccal and lingual with a short central groove

271
Q

what is the U configuration on the mandibular second premolar?

A

two cusps - buccal and lingual with crescent-shaped central groove

272
Q

mandibular second premolar, which cusp is shorter?

A

buccal cusp is shorter and blunter than lingual cusps

273
Q

which cusp is larger on the distal mandibular second premolar?

A

ML cusp is larger than the DL cusp

274
Q

which marginal ridge has a concavity on the mandibular second premolar?

A

mesial marginal ridge has slight concavity

275
Q

which root is longer, mandibular first or second premolar?

A

second premolar root is longer

276
Q

which root tip is closest to the mental foramen?

A

mandibular second premolar

277
Q

which tooth occludes with maxillary first and second premolars?

A

mandibular second premolar

278
Q

what is the largest mandibular tooth?

A

mandibular first molar

279
Q

what is the occlusal shape of the mandibular first molar?

A

trapezoidal

280
Q

what is the proximal shape of mandibular first molar?

A

rhomboidal

281
Q

which tooth has the largest mesiodistal dimension of any tooth?

A

mandibular first molar

282
Q

what is the largest and smallest cusp on the mandibular first molar?

A

MB (largest)

distal cusps are smallest

283
Q

a mandibular first molar has how many tranverse ridges?

A

two

284
Q

who root on mandibular first molar is broadest?

A

mesial root

285
Q

both roots on the mandibular first molar have concavities, which is more prominent?

A

mesial

286
Q

which tooth occludes with the maxillary second premolar and first molar?

A

mandibular first molar

Dental Anatomy - Boards (1 decks)

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