Dent Anatomy

Front 1

In an ideal intercuspal position, the
mesiolingual cusp of a permanent
mandibular second molar opposes the

Back 1

embrasure between maxillary firstand
second molars.

Front 2

In the intercuspal position, the cusp tip of
the permanent maxillary canine is in direct
alignment with which anatomic feature of the
mandibular teeth?

Back 2

facial embrasure

Front 3

In an ideal intercuspal position, the
distolingual cusp of a permanent maxillary
first molar opposes the

Back 3

mesial marginal ridge area of the
mandibular second molar.

Front 4

The disk (meniscus) of the
temporomandibular joint is moved forward
principally by the

Back 4

lateral pterygoid

Front 5

In an ideal intercuspal position, the facial
cusp of the mandibular first premolar
contacts the

Back 5

mesial marginal ridge area of the
maxillary first premolar.

Front 6

In an ideal arrangement of teeth in the
intercuspal position, the mesiofacial cusp of
the permanent mandibular first molar would
be in contact with the maxillary first molar

Back 6

on the mesial marginal ridge area.

Front 7

The lingual cusp of a mandibular first
premolar contacts the

Back 7

nothing?

Front 8

When viewed from the proximal, which of
the following permanent teeth appears to be
aligned in its arch with the axial inclination
of its roots most nearly vertical?

Back 8

Maxillary first premolar

Front 9

The highest and sharpest cusp on a primary
mandibular first molar is the

Back 9

mesiolingual

Front 10

Viewed proximally, which of the following
teeth have the greatest axial inclinations
relative to the occlusal plane?

Back 10

maxillary central incisors

Front 11

Which of the following characteristics is
common to all permanent incisors?

Back 11

Mesial and distal contact areas are
approximately centered faciolingually.

Front 12

On which of the following primary molars
would a prominent transverse ridge typically
occur?

Back 12

mandibular first

Front 13

The distal contact area of a permanent
maxillary canine is usually located at the

Back 13

middle third

Front 14

Which axial surface of the crown of a
mandibular canine is almost parallel to the
long axis of the tooth?

Back 14

mesial

Front 15

Which of the following permanent teeth has
its mesial marginal ridge located more
cervically than its distal marginal ridge?

Back 15

mandibular first premolar

Front 16

When compared with maxillary first
premolars, the central developmental groove
of maxillary second premolars is

Back 16

shorter with multiple supplementary
grooves.

Front 17

Which of the following surfaces of
permanent maxtllary teeth require special
consideration ,in adapting a matrix band
because of pronounced cervical concavities?

Back 17

Mesial of first premolar and distal of first molar

Front 18

The occlusal outline of a maxillaryfirst molar
contains two obtuse and two acute angles.
The acute angles are

Back 18

mesiofacial and distolingual.

Front 19

In which of the following areas is the alveolar process the thinnest?

Back 19

Facialto the mandibular central incisors

Front 20

The pulp horns most likely to be exposed
accidentally in the preparation of a Class II
cavity in a maxillary first molar are

Back 20

mesiofacialand mesiolingual.

Front 21

In comparison with the faciolingual
dimension of the crown of a permanent
mandibular first molar, the mesiodistal
dimension is

Back 21

slightly greater

Front 22

Based upon morphology, a mesicrocclusal
(Class II) cavity preparation would be most
difficult in which of the following teeth?

Back 22

primary mandibular first molar

Front 23

In removing calculus from the root trunk
area, which of the following anatomic
surfaces present the most difficulty?

Back 23

distals of maxillary first molar (only tooth with distal concavity at CEJ

Front 24

In a normal retrusive tooth contacting
movement of the mandible, which tooth
contacts the maxillary central incisor?

Back 24

none

Front 25

In the intercuspal position, which of the
following anterior teeth has the potential to
contact both anterior and posterior
antagonists?

Back 25

maxillary canine

Front 26

The height of contour,occlusocervically is
located within the middle third of the

Back 26

lingual surface of a permanent maxillary
first molar

Front 27

Which of the following are considered
normal lingual anatomy on a maxillary
canine?

Back 27

cingulum, lingual ridge, mesial and distal fossa, mesial and distal marginal ridges

Front 28

Which of the following permanent anterior
teeth normally have their distal contact areas
located within the middle thirds of the
crowns incisogingivally?
(a)
(b)
(c)
(d)
(e)
(f)
Maxillary central incisors
Maxillary lateral incisors
Maxillary canines
Mandibular central incisors
Mandibular lateral incisors
Mandibular canines

Back 28

b c f

Front 29

The roots of mandibular first premolarsare
(a)
(b)
(c)
(d)
flattened faciolingually.
broader facially than lingually. .
frequently sharply curved distally.
usually free of marked distal
curvature.
frequently seen with slight
concave areas on mesial and distal
surfaces.

Back 29

b d e
broader facially that lingually, usually free of marked distal curvature, frequently seen...

Front 30

A maxillary first premolar may be identified
by a

Back 30

marked mesial concavity in the
cervical area.
deep sulcus.
long central groove.

Front 31

A 5-year-old child is treated with large doses
of tetracycline over a one year period. Which
of the following permanent teeth will least
likely show tetracycline staining?

Back 31

Permanent lateral incisors
Permanent canines
First premolars

Front 32

Which of the following fibers are NOT
periodontal ligament fibers?

Back 32

transseptal

Front 33

Froma proximal view, which of the following
permanent teeth tends to be positioned in
the arch with its axis most nearly vertical

Back 33

maxillary canince

Front 34

The occlusal outline of a permanent
maxillaryfirst molar contains two obtuse and
two acute angles. The obtuse angles are

Back 34

mesiolingual and distofacial.

Front 35

In a normal occlusion, the distolingual cusp
of a maxillary second molar occludes with
the

Back 35

marginal ridges of a mandibular second
molar and a mandibular third molar.

Front 36

When a fourth root canal exists in a
maxillaryfirst molar, it is most likely located
in which of the following roots?

Back 36

mesiofacial

Front 37

The cross-sectional outline at the cervical
level is roughly triangular in a

Back 37

permanent maxillary second molar.

Front 38

In an ideal centric occlusion, the lingual
cusp tip (or tips) of a mandibular second
premolar contact(s)

Back 38

no opposing cusps.

Front 39

Which of the followingcharacterizes a
temporomandibular joint?

Back 39

2 synovial cavities

Front 40

In a posterior crossbite relationship, which of
the following may contact in a working
movement?

Back 40

inner aspects of mandibular lingual cusps

Front 41

Primarymolars differ from permanent molars
in that primary molars

Back 41

have flatter facial and lingual surfaces
extending from the occlusal to the
cervical ridge.

Front 42

In a longitudinal section of a premolar
crown, the enamel is thickest in the

Back 42

occlusal third

Front 43

When viewing a maxillarycentral incisor
from the mesial aspect, one normally finds
the incisal ridge of the crown

Back 43

on line with the center of the root.

Front 44

Which of the following primary teeth has the
smallest faciolingual dimension of its crown?

Back 44

Mandibular central incisor

Front 45

In which of the following primary teeth is the
mesial portion most distinctly separated from
the remainder of the occlusal table by a
transverse ridge?

Back 45

Mandibular first molar

Front 46

In a right lateral excursion, the mesiofacial
cusp of the maxillary right first molar passes
through which of the following grooves of
the mandibular right first molar?

Back 46

lingual groove

Front 47

The contact area on the mesial surface of a
mandibular canine is located at the

Back 47

incisal third

Front 48

Followingthe initial period of functional
activity,an appreciable alteration in size of
the pulp chamber is a direct result of

Back 48

2ndary dentin

Front 49

The crown of a primary maxillary first molar
bears the closest resemblance to the crown
of a

Back 49

maxillary 2nd premolar

Front 50

The lingual height of contour on a
permanent mandibular second molar is
located

Back 50

middle 1/3

Front 51

A branch of which of the following cranial
nerves to the tongue may be anesthetized
during administration of an inferior alveolar
block?

Back 51

V

Front 52

Which of the following anatomic features of
a maxillary lateral incisor will most likely
complicate root planing?

Back 52

A distolingual groove

Front 53

Perikymata are the result of

Back 53

normal enamel apposition. are the pits around the long prisms of tooth enamel. They indicate the places where enamel-producing cells used to make contact to neighboring cells and are the result of normal enamel apposition.

Front 54

From an occlusal view, the arrangement of
permanent teeth of the maxiIfary and
mandibular arches are parabolic in shape. In
one segment of the dentition, however, four
teeth are aligned in a straight line. In what
region is this segment located?

Back 54

mandibular posterior

Front 55

The healthy free gingiva aids in the selfcleansing
processby

Back 55

adhering closely to the tooth surface
below the height of contour of the
cervical enamel.

Front 56

Which of the following premolars has a
mesial marginal ridge that is more cervically
located than its distal marginal ridge?

Back 56

mandibular first

Front 57

Moving the mandible from a maximum
intercuspal position to a retruded contact
position usually results in

Back 57

increasedocclusal vertical dimension.
increased horizontal overlap.
decreased vertical overlap.
all of these.

Front 58

Which of the following positions would yield
the smallest measurement of vertical
dimension?

Back 58

maximum intercuspation

Front 59

On the occlusal surface of a maxillary molar,
the groove that representsthe working path
of the distofacialcusp of the mandibular
molar is the

Back 59

facial groove

Front 60

The lingual cusps of a mandibular first molar
must be restored to accommodate

Back 60

working movement

Front 61

Among the primary maxillary teeth, the
cervical ridge would stand out most
prominently as a distinct entity on the

Back 61

mesiofacial portion of 1st molar

Front 62

In a patient with a leftcanine protection, the
mesiolingual surfaceof the maxillaryright
first molar contacts the distofacialsurface of
the mandibular right first molar during a left
lateral excursion.This contact is

Back 62

non-working side interference

Front 63

Which of the following permanent incisors
most frequently have concave areas on both
mesial and distal root surfaces?

Back 63

mandibular central and lateral

Front 64

Characteristicsof a permanent mandibular
canine that distinguish it from a permanent
maxillarycanine include

Back 64

a comparatively narrower
mesiodistal dimension.
a continuous convex facial surface
from incisal to apical end, when
view proximally.

Front 65

The size of the pulp cavity within a tooth is
influenced by the

Back 65

age of the tooth.
parafunctional activity of the tooth.
history of the tooth (abrasion,
erosion, caries, etc.)., NOT the ability of ameloblasts to form new dentin

Front 66

When occlusal relationships are normal,
which portions of the mandibular molars
have potential for contacting antagonists
during the eccentric movements of the
mandible?

Back 66

The outer aspects of the buccal cusps
The inner aspects of the buccal cusps
The inner aspects of the lingual cusps

Front 67

ankylosis

Back 67

fusion of alveolor bone to a tooth due to infection or trauma to the periodontal ligaments.

Front 68

Which of the followingincisal angles of maxiJIary
teeth exhibits the.greatest convexity?

Back 68

distoincisal of the lateral

Front 69

Which of the following represents the largest
cusp of the mandibular first molar?

Back 69

mesiofacial

Front 70

In cervical cross-section, the root of a
mandibular canine is described as

Back 70

flattened in the MD direction

Front 71

In an ideal intercuspal relation, the tip of the
mesiofacial cusp of the maxillary second
molar opposes which of the following?

Back 71

Facial groove of the mandibular second
molar

Front 72

Which of the following primary teeth would
exhibit a prominent cervical ridge on both the
facial and lingual surfaces?

Back 72

F

Front 73

Which premolar has a facial cusp with a
triangular ridge so uniquely prominent as to
frequently separate its mesial pit from its
distal pit?

Back 73

mandibular first

Front 74

Which of the following ligaments has an outer
oblique portion which limits the extent of jaw
opening and initiates translation of the
condyle down the articular eminence?

Back 74

Temporomandibular

Front 75

When a protrusive mandibular movement
(anterior teeth edge-to- edge) is achieved, the
mandibular first molar has the potential to
contact which of the following maxillaryteeth?

Back 75

Second premolar and first molar

Front 76

In ~n acquired Class III crossb1terelationship,
as the mandible retrudes, the maxillary lateral
incisor contacts which of the following teeth?

Back 76

Canine and lateral incisors

Front 77

In a Class II occlusal relationship, the tip of
the facial cusp of a mandibular first premolar
lies directly below the contacting area
between which maxillary teeth?

Back 77

First and second premolars

Front 78

Which extrinsic muscle of the tongue
functtons to retract the tongue?

Back 78

styloglossus

Front 79

Which premolar MOST likely possesses a
crescent-shaped central developmental
groove?

Back 79

maxillary first

Front 80

In an ideal intercuspal relation, the oblique
ridge of the maxilJary first molar opposes
which structure of the mandibular molar?

Back 80

The developmental groove between the
distofacial and distal cusps of the first

Front 81

The concept of using a lateral checkbite
record to set a respective condylar inclination
implies which of the following?

Back 81

That the non-working side condyle has
moved anteriorly and medially
That the working side condyle has

Front 82

The lingual cusp(s) on which of the following
mandibular posterior teeth is (are)
approximately 2/3 the height of the respective
facial cusp(s)?

Back 82

first premolar

Front 83

On the occlusal surface of a maxillary first
molar, the total number of pits is normally the
same as found on the occlusal surface of
which premolar?

Back 83

y-shaped mandibular second

Front 84

From the incisal aspect, the crown of a
maxillary canine normally exhibits which of the
following?

Back 84

A distalportion that displays some
concavity in its facial outline

Front 85

In protrusive movement, the mandibular
canines in a Class II occlusal relationship
articulate with which of the followingmaxillary
teeth?

Back 85

canines and lateral incisors

Front 86

As the mouth is opened widely, the-articular
disk moves in what direction in relation to the
articular eminence?

Back 86

anteriorly

Front 87

Which of the followingnormallydescribesthe
pulp cavity in a mesiodistal section of a
maxillary canine?

Back 87

It is pointed at its incisal limit.

Front 88

primary molar lacks an identifiable

Back 88

root trunk

Front 89

ligament guided position

Back 89

CR Centric relation

Front 90

Muscle guided position

Back 90

Rest position of mandible

Front 91

tooth guided position

Back 91

CO, centric occlusion

Front 92

In the sagittal plane, which of the following
represents the thickest section of the articular
disc?

Back 92

posterior border

Front 93

ligament guided position

Back 93

CR Centric relation

Front 94

Muscle guided position

Back 94

Rest position of mandible

Front 95

tooth guided position

Back 95

CO, centric occlusion

Front 96

In the sagittal plane, which of the following
represents the thickest section of the articular
disc?

Back 96

posterior border

Front 97

During a lateral movement of the mandible.
the articular disc is tightly attached to the head
of the condyle by which of the following
ligaments?

Back 97

collateral

Front 98

When in its proper position relative to the
plane of occlusion, the crown of a mandibular
second molar inclines

Back 98

mesially and lingually

Front 99

The epithelial attachment is always an actual
part of the tooth's

Back 99

periodontium

Front 100

Viewed from the occlusal, the basic coronal
outline of a mandibular second premolar is

Back 100

pentagonal

Front 101

From a facial view, where would the
cementoenamel junction be MOST apically
positioned on the crown of a primary
mandibular first molar?

Back 101

mesial 1/3

Front 102

Which of the following anterior teeth is the MOST likely
to have a bifurcated root?

Back 102

mandibular canine

Front 103

When in its proper position relative to the
plane of occlusion, the crown of a mandibular
second molar inclines

Back 103

mesially and lingually

Front 104

The epithelial attachment is always an actual
part of the tooth's

Back 104

periodontium

Front 105

Viewed from the occlusal, the basic coronal
outline of a mandibular second premolar is

Back 105

pentagonal

Front 106

From a facial view, where would the
cementoenamel junction be MOST apically
positioned on the crown of a primary
mandibular first molar?

Back 106

mesial 1/3

Front 107

Which of the following describes the proximal
contact relationship between a maxillary
central incisor and a maxillary lateral incisor?

Back 107

Lingual embrasure is larger than the
facial embrasure.

Front 108

A crown concavity, which is confluent with a
longitudinal groove of the root, is a rather
common feature of which surface of which
premolar?

Back 108

maxillary first premolar

Front 109

Which of the following characteristics of a
mandibular first molar distinguishes this tooth
from a mandibular second molar?

Back 109

# of developmental grooves

Front 110

Which of the following characteristics is
common to maxillary first and second
premolars?

Back 110

The lingual cusp tip is offset to the
mesial.

Front 111

The lingual aspect of a mandibular first molar
presents with

Back 111

the lingual surface of each cusp
possessing a slightly convex shape in
the occlusal third.

Front 112

Which of the following teeth usually has the
steepest cusp inclines?

Back 112

maxillary first premolar

Front 113

The primary mandibular first molar normally
exhibits which of the following?

Back 113

distal triangular fossa

Front 114

The maxillary lateral incisor is usually equal to
or larger than the maxillary central incisor in
which dimensions?

Back 114

root length cervicoapically

Front 115

mandibular canine

Back 115

narrow MD than max, less pronounced cingulum, incisal tip positions lingual and distal, longer crown, but shorter total length

Front 116

maxillary 1st molar

Back 116

ML>MB>DB>DL

Front 117

Calcification of the mandibular third molars
generally begins at

Back 117

8-10

Front 118

TMJ is what type of joint

Back 118

ginglymoarthrodial (glide and rotational) joint, also a diarthrodial

Front 119

when viewed sagitally, which of the following teeth have their long axes at an angle LEAST perpendicular to the occlusal plane?

Back 119

max central incisors

Front 120

in the intercuspal position, wich anterior teeth has the potential to contact both ant. and post. antagonists?

Back 120

max. canine.

Front 121

the largest incisal embrasure is found between?

Back 121

maxillary lateral incisor and canine

Front 122

the contact area that is MOST NEARLY CIRCULAR is located where

Back 122

mesial of second max. premolar

Front 123

maxillary canine has a midroot x-section that differs from a cervical x-section in what way

Back 123

much greater faciolingual dimension?

Front 124

on the occlusal surface of mand. 2nd premolar, the Y pattern is formed by which grooves?

Back 124

mesial, distal, central

Front 125

which groove of a mand. first molar doesnt enter the central pit

Back 125

mesial marginal,
facial, central , lingual and distofacial all do

Front 126

contraction of these leads to jaw opening

Back 126

suprahyoids, along with lateral pterygoids

Front 127

muscle fibers that extend into the lingual frenum are from

Back 127

geniohyoid