Board Questions Flashcards
In ideal intercuspal relation, the lingual cusp of the maxillary second premolar contacts the:
A distal fossa of the mandibular second premolar
B mesial marginal ridg eof the mandibular first molar
C distal marginal ridge of the mandibular second molar
D distal marginal ridge of the mandibular first premolar
A distal fossa of the mandibular second premolar
Illustrated below is a frontal boarder tracing of a patient with a canine-guided occlusion. Which letter on the diagram defines the only point where posterior tooth contact occurs?
A
The arrows on the illustration below represent the path taken by the opposing contacting cusps. The mandibular movement indicated is:
A protrusive
B right lateral, working side
C left lateral, working side
D right lateral, nonworking side
E left lateral, nonworking side
E left lateral, nonworking side
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 maxillary teeth?
A first and second premolars
B second premolar only
C second premolar and first molar
D first and second molars
E second molar only
C second premolar and first molar
What condylar movement is performed as the mandible moves from a pure protrusive movement from maximum intercuspal position to a maximum protruded position?
A translation
B rotation
C hinge
D medial and forward
A translation
Protrusive movement is produced primarily because of contracture of which of the following muscles?
A masseter
B mylohyoid
C temporalis
D medial pterygoid
E lateral pterygoid
E lateral ptergoid
As the mouth is opened widely, the articular disc moves in what direction in relation to the articular eminence?
A laterally
B anteriorly
C posteriorly
D medially
E superiorly
B anteriorly
On the crowns of maxillary premolars, the height of contour is normally located in the cervical third on which of the following surfaces?
A facial
B lingual
C mesial
D distal
A facial
In the drawing below, the arrow represents a possible contacting area for which of the following mandibular cusps?
A cusp of canine
B facial cusp of first premolar
C lingual cups of first premolar
D facial cusp of second premolar
E lingual cusp of second premolar
B facial cusp of first premolar
Identify the mandibular movement in the drawing above.
A protrusive movement
B right lateral (working side) movement
C right lateral (non-working side) movement
D left lateral (working side) movement
E left lateral (non-working side) movement
E left lateral (non-working side) movement
In the drawing below, the arrow represents a possible contacting area for which of the following maxillary cusps?
A cusp of canine
B facial cusp of first premolar
C lingual cusp of first premolar
D facial cusp of second premolar
E lingual cusp of second premolar
C lingual cusp of first premolar
In left lateral movement of the mandible, the lingual cusp of the maxillary right first premolar may appear to pass:
A into the facial embrasure between the canine and first premolar
B toward the tip of the mandibular second premolar
C into the lingual embrasure between first and second premolars
D into the lingual embrasure between canine and first premolar
B toward the tip of the mandibular second premolar
When restoring the marginal ridges of posterior teeth, their shape should be:
- flattened and square to eliminate food impaction.
- rounded to help form occlusal embrasures and improve food flood.
- rounded to help form occlusal embrasures and decrease food impaction.
- sharp-edged to cut food better and decrease food impaction.
- rounded and wide enough for strength and to provide an occlusal platform when there are opposing cusps.
A 1, 4
B 2, 3
C 2, 3, 5
D 2, 5
E 3, 5
C 2, 3, 5
During function and in traumatic situations, the temporomandibular joint is protected by
- synovial fluid
- durability of the fibrocartilage
- ligament suspension
- muscles of mastication
A 1
B 2, 3
C 2, 3, 4
D 4
E all of the above
E all of the above
Which of the following are correct for the protruded contacting position of the mandible?
- It is a symmetrical position.
- It is an asymmetrical position.
- The lateral pterygoid muscles are the prime movers to this position.
- The medial pterygoid muscles are the prime movers to the position.
- The underside of the meniscus remains fixed relative to the superior surface of the mandibular condyle.
- The underside of the meniscus move distally relative to the superior surface of the mandibular condyle.
A 1, 3, 6
B 1, 4, 5
C 2, 3, 5
D 2, 3, 6
E 2, 4, 5
A 1, 3, 6
In an ideal intercuspal position, the mesiofacial groove of a permanent mandibular first molar opposes which part of the maxillary first molar?
A tip of the distofacial cusp
B tip of the mesiofacial cusp
C triangular ridge of the distofacial cusp
D triangular ridge of the mesiofacial cusp ?
D triangular ridge of the mesiofacial cusp
When it occurs, the immediate side shift (Bennett shift) usually has an effect on the mesiodistal positions of which molar cusps?
A all cusps
B facial cusps only
C lingual cusps only
D centric holding cusps only
E none of the above. Molar cusps are not affected.
A all cusps
In the following drawing of maxillary teeth, the arrow represents a possible contacting area and direction for a mandibular cusp. Identify the cusp.
A mesiofacial cusp of first molar
B distofacial cusp of first molar
C mesiolingual cusp of first molar
D distolingual cusp of first molar
E mesiofacial cusp of second molar
F mesiolingual cusp of second molar
E mesiofacial cusp of second molar
Indicate the mandibular movement in the sketch below
A protrusion
B retrusion
C lateral movement (working side)
D lateral movement (non-working side)
E lateral-protrusive movement
C lateral movement (working side)
Assuming the occlusion and alignment are normal, the arrow on the sketch below represents the path taken by the
A mesiofacial cusp of first molar
B mesiolingual cusp of first molar
C distofacial cusp of first molar
D distolingual cusp of first molar
E fifth cusp of first molar
E fifth cusp of first molar
The mandibular movement indicated on the sketch below is
A protrusive
B right lateral, working side
C left lateral, working side
D right lateral, balancing side
E left lateral, balancing side
A protrusive
Which of the following anatomic entities of the permanent maxillary first molar moves through the distofacial sulcus of a permanent mandibular first molar?
A mesial marginal ridge
B distal marginal ridge
C mesiofacial cusp
D distofacial cusp
E oblique ridge
E oblique ridge
The cusp of Carabelli is normally found on which aspect of a molar crown?
A mesiofacial
B mesiolingual
C distofacial
D distolingual
E near the midpoint of the lingual surface
B mesiolingual
Which of the following permanent teeth usually have oblique ridges?
- maxillary premolars
- maxillary molars
- mandibular premolars
- mandibular molars
A 1, 3
B 2
C 2, 4
D 4
E all of the above
B 2 only
Which of the following marginal ridges have little or no contact in ideal centric and eccentric maxillomandibular contact relationships?
- distal of maxillary second premolar
- distal of mandibular first premolar
- distal of mandibular second premolar
- mesial of maxillary canine
- mesial of mandibular first premolar
A 1, 2
B 1, 4
C 2, 3, 4
D 2, 3, 5
E 4, 5
D 2, 3, 5
In the intercuspal position, the incisal third of the facial surface of the permanent mandibular canine opposes the:
A maxillary lateral incisor and the maxillary canine at the approximation of their marginal ridges
B mesiolingual fossa and mesial marginal ridge of the maxillary canine at the junction of the cervical and the middle thirds
C incisal embrasure between the maxillary canine and the lateral incisor
D none of the above
A maxillary lateral incisor and the maxillary canine at the approximation of their marginal ridges
In an ideal intercuspal position, the distolingual cusp of a permanent maxillary first molar opposes the:
A central fossa of the mandibular first molar
B lingual sulcus of the mandibular first molar
C facial embrasure between the mandibular first and second molars
D mesial fossa of the mandibular second molar
E mesial marginal ridge of the mandibular second molar
E mesial marginal ridge of the mandibular second molar
Assuming occlusion and alignment are normal, the arrow on the sketch below represents the path taken by the
A mesiofacial cusp of a second molar
B mesiolingual cusp of a second molar
C distofacial cusp of a second molar
D distolingual cusp of a second molar
E mesiofacial cusp of a third molar
C distofacial cusp of a second molar
The mandibular movement indicated below is
A protrusive
B right lateral, working side
C left lateral, working side
D right lateral, non-working side
E left lateral, non-working side
B right lateral, working side
Assuming occlusion and alignment are normal, the arrow on the sketch below represents the path taken by the
A distofacial cusp of a first molar
B fifth cusp of a first molar
C mesiofacial cusp of a second molar
D mesiolingual cusp of a second molar
E distofacial cusp of a second molar
C mesiofacial cusp of a second molar
Assuming occlusion and alignment are normal, the arrow on the sketch below represents the path taken by the:
A facial cusp of a first premolar
B lingual cusp of a first premolar
C facial cusp of a second premolar
D lingual cusp of a second premolar
E mesiolingual cusp of a first molar
D lingual cusp of a second premolar
The mandibular movement indicated below is:
A protrusive
B right lateral, working side
C left lateral, working side
D right lateral, non-working side
E left lateral, non-working side
D right lateral, non-working side
In the sketch below, the base of the arrow representing a possible contacting area for which of the following maxillary cusps?
A lingual cusp of a second premolar
B distolingual cusp of a first molar
C mesiolingual cusp of a first molar
D mesiolingual cusp of a second molar
E distolingual cusp of a second molar
D mesiolingual cusp of a second molar
In an ideal intercuspal position (centric occlusion), the cusp of a permanent mandibular canine opposes the:
A marginal ridges of maxillary premolars
B distal fossa of a maxillary first premolar
C occlusal embrasure between maxillary canine and first premolar
D incisal embrasure between maxillary canine and lateral incisor
D incisal embrasure between maxillary canine and lateral incisor
Which of the following jaw positions is determine almost exclusively by tooth contact?
A terminal hinge
B maximum position
C postrual position
D masticatory cycle
E intercuspal position
F retruded contacting position
E intercuspal position
During nonmasticatory swallowing, teeth are usually
A protruded
B in a working arrangement
C in contact in intercuspal position
D none of the above. This is a nonexistent contact.
C in contact in intercuspal position
In the sketch below, the arrows indicate which of the following mandibular movements?
A protrusive
B right lateral, working side
C left lateral, working side
D right lateral, non-working side
E left lateral, non-working side
C left lateral, working side
Which of the following covers the articulating osseous structures of the temporomandibular joint?
A synovial membrane
B hyaline cartilage only
C vascular fibrous connective tissue
D dense avascular fibrous connective tissue
E dense avascular elastic connective tissue
D dense avascular fibrous connective tissue
In the figure below, which number designates retruded contacting position?
4
In normal occlusion, mandibular central incisors contact maxillary incisors in which of the following movements?
- protrusive
- lateral (working)
- laternal (non-working)
- lateral protrusive
A 1, 2
B 1, 2, 4
C 1, 4
D 2, 3
E 3
F 4
C 1, 4
The protrusive pathway of mandibular cusps on maxillary posterior teeth is toward the:
A facial
B distal
C lingual
D mesial
E none of the above
D mesial
The disc (meniscus) of the TMJ is moved principally by the:
A condyle
B articular capsule
C stylomandibular ligament
D medial pterygoid muscle
E lateral pterygoid muscle
E lateral pterygoid muscle
In an ideal intercuspal position, the facial cusp of the mandibular first premolar contacts the:
A mesial marginal ridge area of the maxillary first premolar
B distal marginal ridge area of the maxillary first premolar
C distal inner aspect of the lingual cusp of the maxillary first premolar
D mesial outer aspect of the facial cusp of the maxillary first premolar
E central groove of the maxillary second premolar
A 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:
A in the central fossa
B in the distal fossa
C on the oblique ridge
D on the mesial marginal ridge area
D on the mesial marginal ridge area
When the teeth are in centric occlusion, the position of the mandible in relation to the maxilla is primarily determined by the:
A intercuspation of the teeth
B presence or absence of diastemas
C tonus of muscles of head and neck
D ligamnts of the TMJ
A intercuspation of the teeth
In the sketch below, the arrows represent possible contacting areas for which of the following maxillary cusps?
A facial cusps of premolars
B lingual cusps of premolars
C facial cusp of second premolar and mesifacial cusp of first molar
D lingual cusp of second premolar and mesiolingual cusp of first molar
B lingual cusps of premolars
Identify the mandibular movement in the drawing.
A protrusive
B right lateral (working side)
C right lateral (non-working side)
D left lateral (working side)
E left lateral (non-working side)
C right lateral (non-working side)
The cusp of Carabelli occurs with sufficient frequency to be considered normal in a:
1 primary maxillary first molar
2 primary maxillary second molar
3 permanent mandibular first molar
4 permanent maxillary first molar
A 1, 3
B 1, 4
C 2, 4
D 4
C 2, 4
Refer to the following paragraph and to the cast crown illustrated below. The dentist placed a cast crown on a patient who has an ideal canine guided occlusion. The maximum intercuspal position MIP contacts area ideal; however, when the lateral movements were evaluated with an articulating paper, the following smudge marks were noted. In order to eliminate the undesirable nature of this contact (a, b, c) which portions of the crown should be removed by selective grinding with a bur?
A the entire smudge mark labeled a, b, c
B only the a and b portions of the smudge mark
C only the b and c portions of the smudge mark
C only the b and c portions of the smudge mark
In a left working movement, the mesiofacial cusp of a maxillary right second molar will pass through which of the following?
A the embrasure space between a mandibular right third molar and a mandibular right second molar
B the embrasure space between a mandibular right second molar and a mandibular right first molar
C the buccal groove area of a mandibular right second molar
D the buccal groove area of a mandibular first molar
E none of the above
E none of the above
Which of the following muscles is a prime mover in effecting a left working movement?
A left lateral pterygoid
B left medial pterygoid
C right lateral pterygoid
D right medial pterygoid
C right lateral pterygoid
In an ideal centric occlusion, the lingual cusp tip (or tips) of a mandibular second premolar contact(s)
A the disto-occlussal slope of the buccal cusp of maxillary first premolar
B the disto-occlusal slope of the lingual cusp of a maxillary first premolar
C the mesio-occlusal cusp ridge of a maxillary second premolar
D the disto-occlusal cusp ridge of a maxillary second premolar
E no opposing cusps
E no opposing cusps
In a posterior crossbite relationship, which of the following may contact in a working movement?
A outer aspects of mandibular facial cusps
B outer aspects of maxillary lingual cusps
C outer aspects of mandibular lingual cusps
D inner aspects of mandibular lingual cusps
D inner aspects of mandibular lingual cusps
In the drawing below, the arrows represent the possible contacting areas for which of the following mandibular cusps?
A cusp of canine, facial cusp of first premolar and distal cusp of first molar
B facial cusps of premolars and distal cusp of first molar
C facial cusps of premolars and mesiofacial cusp of second molar
D lingual cusps of premolars and distolingual cusp of first molar
B facial cusps of premolars and distal cusp of first molar
Assuming that occlusion and alignment are normal, the arrow on the sketch below represents the path taken by the:
A cusp of a canine
B facial cusp of a first premolar
C lingual cusp of a first premolar
D facial cusp of a second premolar
E lingual cusp of a second premolar
C lingual cusp of a first premolar
In left lateral movement of the mandible, the lingual cusp of the maxillary right first premolar may appear to pass:
A. into the facial embrasure between canine and first premolar.
B. toward the tip of the mandibular second premolar.
C. into the lingual embrasure between first and second premolars.
D. into the lingual embrasure between canine and first premolar.
B. Toward the tip of the mandibular second premolar
When it occurs, the immediate side shift (Bennett movement) usually has an effect on the mesiodistal positions of which molar cusps?
A. all cusps.
B. facial cusps only.
C. lingual cusps only.
D. centric holding cusps only.
E. none of the above. Molar cusps are not affected.
A. all cusps.
Refer to the following paragraph and to the cast crown illustrated below.
The dentist placed a cast crown on a patient who has an ideal canine guided occlusion. The maximum intercuspal position (MIP) contacts are ideal; however, when the lateral movements were evaluated with an articulating paper, the following smudge marks were noted. Which of the following maxillary teeth is responsible for the smudge mark labeled a, b, & c?
A. first molar
B. second molar
C. first premolar
D. second premolar
A first molar
Refer to the following paragraph and to the cast crown illustrated below. The dentist placed a cast crown on a patient who has an ideal canine guided occlusion. The maximum intercuspal position (MIP) contacts are ideal; however, when the lateral movements were evaluated with an articulating paper, the following smudge marks were noted. The smudge mark labeled a, b, c represents which of the following contacts?
A. working side
B. non-working side
C. protrusive
D. lateral protrusive
A working side
In normal occlusion, the distolingual cusp of a maxillary second molar occludes with the:
A. central fossa of a mandibular second molar
B. distal fossa of a mandibular second molar
C. central fossa of a mandibular third molar
D. marginal ridges of a mandibular first molar and a mandibular second molar
E. marginal ridges of a mandibular second molar and a mandibular third molar
E. marginal ridges of a mandibular second molar and a mandibular third molar
The mandibular movement indicated in the drawing below is:
A. protrusive
B. right lateral, working side
C. left lateral, working side
D. right lateral; non-working side
E. left lateral; non-working side
B. right lateral, working side
The mandibular movement indicated in the drawing below is
A. protrusive
B. right lateral, working side
C. left lateral, working side
D. right lateral, non-working side
E. left lateral, non-working side
C. left lateral, working side
The condyle on the working side generally rotates about a:
A. sagittal axis only
B. horizontal axis only
C. horizontal axis and translates laterally
D. vertical axis and translates laterally.
D. vertical axis and translates laterally.
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?
A. lingual groove
B. central groove
C. facial groove
D. distofacial groove
A. lingual groove
When the mandible slides in a protrusive contacting movement, which of the following mandibular teeth can make contact with the maxillary lateral incisors?
A. central and lateral incisors
B. central incisors and canines
C. lateral incisors and canines
D. all of these
C. lateral incisors and canines
On the occlusal surface of a maxillary molar, the groove that represents the working path of the distofacial cusp of the mandibular molar is the
A. central groove.
B. facial groove.
C. lingual groove.
D. distal oblique groove.
E. transverse groove of the oblique ridge.
B. facial groove.
