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127 Cards in this Set
- Front
- Back
In an ideal intercuspal position, the
mesiolingual cusp of a permanent mandibular second molar opposes the |
embrasure between maxillary firstand
second molars. |
|
In the intercuspal position, the cusp tip of
the permanent maxillary canine is in direct alignment with which anatomic feature of the mandibular teeth? |
facial embrasure
|
|
In an ideal intercuspal position, the
distolingual cusp of a permanent maxillary first molar opposes the |
mesial marginal ridge area of the
mandibular second molar. |
|
The disk (meniscus) of the
temporomandibular joint is moved forward principally by the |
lateral pterygoid
|
|
In an ideal intercuspal position, the facial
cusp of the mandibular first premolar contacts the |
mesial marginal ridge area of the
maxillary first premolar. |
|
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 |
on the mesial marginal ridge area.
|
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The lingual cusp of a mandibular first
premolar contacts the |
nothing?
|
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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? |
Maxillary first premolar
|
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The highest and sharpest cusp on a primary
mandibular first molar is the |
mesiolingual
|
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Viewed proximally, which of the following
teeth have the greatest axial inclinations relative to the occlusal plane? |
maxillary central incisors
|
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Which of the following characteristics is
common to all permanent incisors? |
Mesial and distal contact areas are
approximately centered faciolingually. |
|
On which of the following primary molars
would a prominent transverse ridge typically occur? |
mandibular first
|
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The distal contact area of a permanent
maxillary canine is usually located at the |
middle third
|
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Which axial surface of the crown of a
mandibular canine is almost parallel to the long axis of the tooth? |
mesial
|
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Which of the following permanent teeth has
its mesial marginal ridge located more cervically than its distal marginal ridge? |
mandibular first premolar
|
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When compared with maxillary first
premolars, the central developmental groove of maxillary second premolars is |
shorter with multiple supplementary
grooves. |
|
Which of the following surfaces of
permanent maxtllary teeth require special consideration ,in adapting a matrix band because of pronounced cervical concavities? |
Mesial of first premolar and distal of first molar
|
|
The occlusal outline of a maxillaryfirst molar
contains two obtuse and two acute angles. The acute angles are |
mesiofacial and distolingual.
|
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In which of the following areas is the alveolar process the thinnest?
|
Facialto the mandibular central incisors
|
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The pulp horns most likely to be exposed
accidentally in the preparation of a Class II cavity in a maxillary first molar are |
mesiofacialand mesiolingual.
|
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In comparison with the faciolingual
dimension of the crown of a permanent mandibular first molar, the mesiodistal dimension is |
slightly greater
|
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Based upon morphology, a mesicrocclusal
(Class II) cavity preparation would be most difficult in which of the following teeth? |
primary mandibular first molar
|
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In removing calculus from the root trunk
area, which of the following anatomic surfaces present the most difficulty? |
distals of maxillary first molar (only tooth with distal concavity at CEJ
|
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In a normal retrusive tooth contacting
movement of the mandible, which tooth contacts the maxillary central incisor? |
none
|
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In the intercuspal position, which of the
following anterior teeth has the potential to contact both anterior and posterior antagonists? |
maxillary canine
|
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The height of contour,occlusocervically is
located within the middle third of the |
lingual surface of a permanent maxillary
first molar |
|
Which of the following are considered
normal lingual anatomy on a maxillary canine? |
cingulum, lingual ridge, mesial and distal fossa, mesial and distal marginal ridges
|
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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 |
b c f
|
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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. |
b d e
broader facially that lingually, usually free of marked distal curvature, frequently seen... |
|
A maxillary first premolar may be identified
by a |
marked mesial concavity in the
cervical area. deep sulcus. long central groove. |
|
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? |
Permanent lateral incisors
Permanent canines First premolars |
|
Which of the following fibers are NOT
periodontal ligament fibers? |
transseptal
|
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Froma proximal view, which of the following
permanent teeth tends to be positioned in the arch with its axis most nearly vertical |
maxillary canince
|
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The occlusal outline of a permanent
maxillaryfirst molar contains two obtuse and two acute angles. The obtuse angles are |
mesiolingual and distofacial.
|
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In a normal occlusion, the distolingual cusp
of a maxillary second molar occludes with the |
marginal ridges of a mandibular second
molar and a mandibular third molar. |
|
When a fourth root canal exists in a
maxillaryfirst molar, it is most likely located in which of the following roots? |
mesiofacial
|
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The cross-sectional outline at the cervical
level is roughly triangular in a |
permanent maxillary second molar.
|
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In an ideal centric occlusion, the lingual
cusp tip (or tips) of a mandibular second premolar contact(s) |
no opposing cusps.
|
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Which of the followingcharacterizes a
temporomandibular joint? |
2 synovial cavities
|
|
In a posterior crossbite relationship, which of
the following may contact in a working movement? |
inner aspects of mandibular lingual cusps
|
|
Primarymolars differ from permanent molars
in that primary molars |
have flatter facial and lingual surfaces
extending from the occlusal to the cervical ridge. |
|
In a longitudinal section of a premolar
crown, the enamel is thickest in the |
occlusal third
|
|
When viewing a maxillarycentral incisor
from the mesial aspect, one normally finds the incisal ridge of the crown |
on line with the center of the root.
|
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Which of the following primary teeth has the
smallest faciolingual dimension of its crown? |
Mandibular central incisor
|
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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? |
Mandibular first molar
|
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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? |
lingual groove
|
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The contact area on the mesial surface of a
mandibular canine is located at the |
incisal third
|
|
Followingthe initial period of functional
activity,an appreciable alteration in size of the pulp chamber is a direct result of |
2ndary dentin
|
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The crown of a primary maxillary first molar
bears the closest resemblance to the crown of a |
maxillary 2nd premolar
|
|
The lingual height of contour on a
permanent mandibular second molar is located |
middle 1/3
|
|
A branch of which of the following cranial
nerves to the tongue may be anesthetized during administration of an inferior alveolar block? |
V
|
|
Which of the following anatomic features of
a maxillary lateral incisor will most likely complicate root planing? |
A distolingual groove
|
|
Perikymata are the result of
|
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.
|
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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? |
mandibular posterior
|
|
The healthy free gingiva aids in the selfcleansing
processby |
adhering closely to the tooth surface
below the height of contour of the cervical enamel. |
|
Which of the following premolars has a
mesial marginal ridge that is more cervically located than its distal marginal ridge? |
mandibular first
|
|
Moving the mandible from a maximum
intercuspal position to a retruded contact position usually results in |
increasedocclusal vertical dimension.
increased horizontal overlap. decreased vertical overlap. all of these. |
|
Which of the following positions would yield
the smallest measurement of vertical dimension? |
maximum intercuspation
|
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On the occlusal surface of a maxillary molar,
the groove that representsthe working path of the distofacialcusp of the mandibular molar is the |
facial groove
|
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The lingual cusps of a mandibular first molar
must be restored to accommodate |
working movement
|
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Among the primary maxillary teeth, the
cervical ridge would stand out most prominently as a distinct entity on the |
mesiofacial portion of 1st molar
|
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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 |
non-working side interference
|
|
Which of the following permanent incisors
most frequently have concave areas on both mesial and distal root surfaces? |
mandibular central and lateral
|
|
Characteristicsof a permanent mandibular
canine that distinguish it from a permanent maxillarycanine include |
a comparatively narrower
mesiodistal dimension. a continuous convex facial surface from incisal to apical end, when view proximally. |
|
The size of the pulp cavity within a tooth is
influenced by the |
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 |
|
When occlusal relationships are normal,
which portions of the mandibular molars have potential for contacting antagonists during the eccentric movements of the mandible? |
The outer aspects of the buccal cusps
The inner aspects of the buccal cusps The inner aspects of the lingual cusps |
|
ankylosis
|
fusion of alveolor bone to a tooth due to infection or trauma to the periodontal ligaments.
|
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Which of the followingincisal angles of maxiJIary
teeth exhibits the.greatest convexity? |
distoincisal of the lateral
|
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Which of the following represents the largest
cusp of the mandibular first molar? |
mesiofacial
|
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In cervical cross-section, the root of a
mandibular canine is described as |
flattened in the MD direction
|
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In an ideal intercuspal relation, the tip of the
mesiofacial cusp of the maxillary second molar opposes which of the following? |
Facial groove of the mandibular second
molar |
|
Which of the following primary teeth would
exhibit a prominent cervical ridge on both the facial and lingual surfaces? |
F
|
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Which premolar has a facial cusp with a
triangular ridge so uniquely prominent as to frequently separate its mesial pit from its distal pit? |
mandibular first
|
|
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? |
Temporomandibular
|
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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? |
Second premolar and first molar
|
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In ~n acquired Class III crossb1terelationship,
as the mandible retrudes, the maxillary lateral incisor contacts which of the following teeth? |
Canine and lateral incisors
|
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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? |
First and second premolars
|
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Which extrinsic muscle of the tongue
functtons to retract the tongue? |
styloglossus
|
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Which premolar MOST likely possesses a
crescent-shaped central developmental groove? |
maxillary first
|
|
In an ideal intercuspal relation, the oblique
ridge of the maxilJary first molar opposes which structure of the mandibular molar? |
The developmental groove between the
distofacial and distal cusps of the first |
|
The concept of using a lateral checkbite
record to set a respective condylar inclination implies which of the following? |
That the non-working side condyle has
moved anteriorly and medially That the working side condyle has |
|
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)? |
first premolar
|
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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? |
y-shaped mandibular second
|
|
From the incisal aspect, the crown of a
maxillary canine normally exhibits which of the following? |
A distalportion that displays some
concavity in its facial outline |
|
In protrusive movement, the mandibular
canines in a Class II occlusal relationship articulate with which of the followingmaxillary teeth? |
canines and lateral incisors
|
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As the mouth is opened widely, the-articular
disk moves in what direction in relation to the articular eminence? |
anteriorly
|
|
Which of the followingnormallydescribesthe
pulp cavity in a mesiodistal section of a maxillary canine? |
It is pointed at its incisal limit.
|
|
primary molar lacks an identifiable
|
root trunk
|
|
ligament guided position
|
CR Centric relation
|
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Muscle guided position
|
Rest position of mandible
|
|
tooth guided position
|
CO, centric occlusion
|
|
In the sagittal plane, which of the following
represents the thickest section of the articular disc? |
posterior border
|
|
ligament guided position
|
CR Centric relation
|
|
Muscle guided position
|
Rest position of mandible
|
|
tooth guided position
|
CO, centric occlusion
|
|
In the sagittal plane, which of the following
represents the thickest section of the articular disc? |
posterior border
|
|
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? |
collateral
|
|
When in its proper position relative to the
plane of occlusion, the crown of a mandibular second molar inclines |
mesially and lingually
|
|
The epithelial attachment is always an actual
part of the tooth's |
periodontium
|
|
Viewed from the occlusal, the basic coronal
outline of a mandibular second premolar is |
pentagonal
|
|
From a facial view, where would the
cementoenamel junction be MOST apically positioned on the crown of a primary mandibular first molar? |
mesial 1/3
|
|
Which of the following anterior teeth is the MOST likely
to have a bifurcated root? |
mandibular canine
|
|
When in its proper position relative to the
plane of occlusion, the crown of a mandibular second molar inclines |
mesially and lingually
|
|
The epithelial attachment is always an actual
part of the tooth's |
periodontium
|
|
Viewed from the occlusal, the basic coronal
outline of a mandibular second premolar is |
pentagonal
|
|
From a facial view, where would the
cementoenamel junction be MOST apically positioned on the crown of a primary mandibular first molar? |
mesial 1/3
|
|
Which of the following describes the proximal
contact relationship between a maxillary central incisor and a maxillary lateral incisor? |
Lingual embrasure is larger than the
facial embrasure. |
|
A crown concavity, which is confluent with a
longitudinal groove of the root, is a rather common feature of which surface of which premolar? |
maxillary first premolar
|
|
Which of the following characteristics of a
mandibular first molar distinguishes this tooth from a mandibular second molar? |
# of developmental grooves
|
|
Which of the following characteristics is
common to maxillary first and second premolars? |
The lingual cusp tip is offset to the
mesial. |
|
The lingual aspect of a mandibular first molar
presents with |
the lingual surface of each cusp
possessing a slightly convex shape in the occlusal third. |
|
Which of the following teeth usually has the
steepest cusp inclines? |
maxillary first premolar
|
|
The primary mandibular first molar normally
exhibits which of the following? |
distal triangular fossa
|
|
The maxillary lateral incisor is usually equal to
or larger than the maxillary central incisor in which dimensions? |
root length cervicoapically
|
|
mandibular canine
|
narrow MD than max, less pronounced cingulum, incisal tip positions lingual and distal, longer crown, but shorter total length
|
|
maxillary 1st molar
|
ML>MB>DB>DL
|
|
Calcification of the mandibular third molars
generally begins at |
8-10
|
|
TMJ is what type of joint
|
ginglymoarthrodial (glide and rotational) joint, also a diarthrodial
|
|
when viewed sagitally, which of the following teeth have their long axes at an angle LEAST perpendicular to the occlusal plane?
|
max central incisors
|
|
in the intercuspal position, wich anterior teeth has the potential to contact both ant. and post. antagonists?
|
max. canine.
|
|
the largest incisal embrasure is found between?
|
maxillary lateral incisor and canine
|
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the contact area that is MOST NEARLY CIRCULAR is located where
|
mesial of second max. premolar
|
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maxillary canine has a midroot x-section that differs from a cervical x-section in what way
|
much greater faciolingual dimension?
|
|
on the occlusal surface of mand. 2nd premolar, the Y pattern is formed by which grooves?
|
mesial, distal, central
|
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which groove of a mand. first molar doesnt enter the central pit
|
mesial marginal,
facial, central , lingual and distofacial all do |
|
contraction of these leads to jaw opening
|
suprahyoids, along with lateral pterygoids
|
|
muscle fibers that extend into the lingual frenum are from
|
geniohyoid
|