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B. Oral Anatomy > Post Test > Flashcards

Post Test Flashcards

1
Q

The part of the tooth that is exposed to the oral cavity is referred to as:

A. clinical crown
B. clinical root
C. anatomic crown
D. Anatomic root
E. both A & B

A

A. clinical crown

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2
Q

Which among the permanent molars develops from 5 lobes?

A. maxillary 1st
B. mandibular 1st
C. maxillary 2nd
D. mandibular 2nd
E. third molars

A

B. mandibular 1st
MAX 1ST- If cusp of carabelli is present

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3
Q

Anterior teeth whose cingulum are located off center to the distal.

  1. Maxillary centrals
  2. Maxillary laterals
  3. Maxillary canines
  4. Mandibular centrals
  5. Mandibular laterals
  6. Mandibular canines

A. 1,2,4,5
B. 1,2,4,5,6
C. 1,3,4,5,6
D. 2, 3, 4
E. 1, 5, 6

A

E. 1, 5, 6

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4
Q

The mesial contact area of maxillary central incisors is located at the:

A. incisal ridge
B. near the mesioincisal angle
C. near the junction of incisal and middle third
D. at level with the distal contact area
E. none of the above.

A

B. near the mesioincisal angle

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5
Q

The height of contour of a mandibular incisor when viewed facially is located at what third of the crown?

A. Cervical
B. Junction of cervical and middle
C. Middle
D. Incisal
E. junction of Middle and Incisal

A

D. Incisal

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6
Q

The embrasures surrounding the contact area of an anterior tooth are:

A. gingival, cervical, facial and lingual
B. incisal, cervical, and facial only
C. incisal, cervical, facial and lingual
D. cervical, lingual and facial only

A

C. incisal, cervical, facial and lingual

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7
Q

Cervical contours are closely related to the attachment of gingival at the neck of the tooth. The greatest contours of the cervical lines and gingival attachments occur on which of the following surfaces?

A. Distal surfaces of anterior teeth
B. Mesial surfaces of anterior teeth
C. Distal surfaces of posterior teeth
D. Mesial surfaces of posterior teeth

A

B. Mesial surfaces of anterior teeth

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8
Q

The surfaces of teeth that have a trapezoidal outline:

  1. Lingual of posterior teeth
  2. Labial of anterior teeth
  3. Buccal of posterior teeth
  4. Proximal of posterior teeth

A. 1,2,3
B. 2,3,4
C. 2 & 3 only
D. 1,2,4
E. 1 only

A

A. 1,2,3

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9
Q

Primary teeth differ from the permanent teeth in that primary teeth have:

I. Whiter crown
II. More pronounced cervical ridges
III. Larger pulp cavities
IV. Larger and slender roots
V. Longer crowns compared with their mesiodistal diameters

A. I, II & III
B. I, II III & IV
C. I, II III & V
D. I, IV & V
E. III, IV & V

A

B. I, II III & IV

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10
Q

Which of the following is characteristic of primary maxillary canines?

A. Crown height < mesiodistal width.
B. Cusp is low and rounded.
C. The mesioincisal cusp ridge is shorter than the distoincisal cusp ridge.
D. The mesioincisal cusp ridge is longer than the distoincisal cusp ridge.

A

D. The mesioincisal cusp ridge is longer than the distoincisal cusp ridge.

RULE:
The mesioincisal cusp ridge is shorter than the distoincisal cusp ridge.
Except:
Primary Maxillary Canine
Permanent Maxillary First Premolar

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11
Q

Which primary teeth MOST differ from their permanent counterparts?

A. Incisors
B. Canines
C. First molars
D. Second molars

A

C. First molars

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12
Q

Which of the following is the normal relationship of the primary molars in the deciduous dentition?

A. Distal step
B. Flush-terminal plane
C. Mesial step
D. None of the above

A

B. Flush-terminal plane

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13
Q

Which tooth is LEAST likely to have a divided pulp canal?

A. Mandibular canine
B. Maxillary first premolar
C. Maxillary central incisor
D. Maxillary lateral incisor

A

C. Maxillary central incisor

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14
Q

Maxillary lateral incisors vary considerably in its development. Variations includes the following, except:

A. Non-descript pointed form
B. Missing entirely
C. deep developmental grooves
D. twisted roots; distorted crowns
E. notch on the incisal ridge

A

E. notch on the incisal ridge

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15
Q

The canines are important concerning esthetics due to which of the following considerations?

A. They can serve to help stabilize dental prosthetics
B. The position of the canine near the corner of the mouth
C. Both A and B.
D. The position of the bony ridge or canine eminence help support facial expression.
E. A, B and D

A

E. A, B and D

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16
Q

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

A. Maxillary first molar
B. Mandibular second molar
C. Mandibular first molar
D. Mandibular first premolar
E. Maxillary first premolar

A

D. Mandibular first premolar

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17
Q

Y-shaped groove is characteristic of :

A. maxillary 1st
B. mandibular 1st
C. mandibular 2nd – 3 cusp type
D. maxillary 2nd
E. mandibular 2nd- 2 cusp type

A

C. mandibular 2nd – 3 cusp type

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18
Q

The following features are TRUE of maxillary first premolar mesially , except:

A. Presence of a developmental depression on the crown and root.
B. Well-defined developmental groove in the enamel of mesial marginal ridge.
C. the groove and depression are in line with each other
D. the groove and depression are connected with each other.
E. All of the above are true.

A

D. the groove and depression are connected with each other.

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19
Q

This molar presents buccal roots that are plier- handled in shaped?

A. maxillary 1st
B. mandibular 1ST
C. maxillary 2nd
D. mandibular 2nd
E. third molars

A

A. maxillary 1st

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20
Q

As compared to those of the permanent mandibular first molar, the roots of the second molar are:

A. more mesially inclined
B. straighter
C. more distally inclined
D. very similar in inclination to the first molar

A

C. more distally inclined

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21
Q

A patient presents for examination with both mandibular first molars distal to the maxillary first molars. This occlusion is known as:

A. Class I, distocclusion
B. Class II, mesiocclusion
C. Class II, distocclusion
D. Class III, mesiocclusion
E. Class III, distocclusion

A

C. Class II, distocclusion

22
Q

These molars has two antagonists, except:

A. maxillary first molars
B. maxillary third molars
C. mandibular first molars
D. mandibular third molars

A

B. maxillary third molars (and mandibular CI)

23
Q

In occlusion, guiding cusps are defined as:

A. lingual cusps of maxillary and mandibular arches
B. bucccal cusps of maxillary and mandibular arches
C. buccal cusps of the maxillary arch and lingual cusps of the mandibular arch
D. lingual cusps of the maxillary arch and buccal cusps of the mandibular arch

A

C. buccal cusps of the maxillary arch and lingual cusps of the mandibular arch

GUIDING CUSP= NONWORKING CUSP
BULLs ( Buccal Upper, Lingual Lower)

HOLDING CUSP= WORKING CUSP
BLLUs ( Buccal Lower, Lingual Upper)

24
Q

In the intercuspal position, facial cusps of mandibular teeth occlude with

A. fossae only
B. grooves and embrasures
C. fossae and marginal ridges only
D. fossae, marginal ridges and embrasures

A

C. fossae and marginal ridges only

25
In centric occlusion, the distolingual cusp of the maxillary second molar will contact: A. the central fossa of the mandibular second molar B. the distal marginal ridge of the mandibular first molar and mesial marginal ridge of second molar C. the distal marginal ridge of the mandibular second molar and mesial marginal ridge of first molar D. the distal marginal ridge of the mandibular second molar and mesial marginal ridge of third molar
D. the distal marginal ridge of the mandibular second molar and mesial marginal ridge of third molar
26
In centric occlusion, the lingual cusp of the maxillary second premolar contacts: A. mesial marginal ridge of mandibular first premolar and distal marginal ridge of second premolar B. Distal marginal ridge of mandibular first premolar and mesial marginal ridge of second premolar C. distal marginal ridge of the mandibular first molar and mesial marginal ridge of second premolar D. distal marginal ridge of the mandibular second premolar and mesial marginal ridge of first molar
D. distal marginal ridge of the mandibular second premolar and mesial marginal ridge of first molar
27
In centric occlusion, the lingual cusp of the maxillary first premolar contacts: A. mesial marginal ridge of mandibular first premolar and distal marginal ridge of second premolar B. distal marginal ridge of mandibular first premolar and mesial marginal ridge of second premolar C. Mesial marginal ridge of the mandibular first molar and distal marginal ridge of second premolar D. distal marginal ridge of the mandibular second premolar and mesial marginal ridge of first molar
B. distal marginal ridge of mandibular first premolar and mesial marginal ridge of second premolar
28
In an ideal arrangement of teeth in the intercuspal position, the mesiobuccal cusp of the permanent mandibular first molar would be in contact with the maxillary first molar: A. In the central fossa B. on the oblique ridge C. in the distal fossa D. on the mesial marginal ridge area
D. on the mesial marginal ridge area
29
In an ideal arrangement of teeth in the intercuspal position, the mesiobuccal cusp of the permanent mandibular first molar would be in contact with the maxillary first molar: A. In the central fossa B. on the oblique ridge C. in the distal fossa D. on the mesial marginal ridge area
D. on the mesial marginal ridge area
30
The distobuccal cusp of the mandibular second molar occludes with which maxillary tooth surfaces? A. The mesial marginal ridge of the second molar and distal marginal ridge of the first molar B. The distal marginal ridge of the second molar and mesial marginal ridge of the third molar C. The embrasure between the first and second molars D. The central fossa of the maxillary second molar
D. The central fossa of the maxillary second molar
31
The distobuccal cusp of the mandibular third molar occludes with which maxillary tooth surfaces? A. The mesial marginal ridge of the third molar and distal marginal ridge of the second molar B. The central fossa of the third molar C. The mesial marginal ridge of the third molar only D. The distal marginal ridge of the third molar only
B. The central fossa of the third molar
32
The distal cusp of the mandibular first molar occludes with which maxillary tooth surfaces? A. The mesial marginal ridge of the first molar and distal marginal ridge of the second molar B. The distal marginal ridge of the second molar and mesial marginal ridge of the first molar C. The embrasure between the first and second molars D. The distal triangular fossa of the first molar
D. The distal triangular fossa of the first molar
33
The buccal cusp of the maxillary first premolar occludes in: A. the mesial marginal ridge of the mandibular first premolar B. the distal marginal ridge of the mandibular second premolar C. the mesial marginal ridge of the mandibular second premolar D. the facial embrasure between the mandibular first and second premolars E. the facial embrasure between the mandibular first premolar and canine
D. the facial embrasure between the mandibular first and second premolars
34
The distobuccal cusp of the maxillary first molar occludes in: A. the mesial marginal ridge of the mandibular second molar B. the distal marginal ridge of the mandibular first molar C. the central groove of the mandibular first molar D. the facial embrasure between the mandibular first and second molars E. the distobuccal groove of the first mandibular molar
E. the distobuccal groove of the first mandibular molar
35
The distobuccal cusp of the maxillary second molar occludes in: A. the mesial marginal ridge of the mandibular second molar B. the buccal groove of the mandibular second molar C. the central groove of the mandibular third molar D. the facial embrasure between the mandibular first and second molars E. the facial embrasure between the mandibular second and third molars
E. the facial embrasure between the mandibular second and third molars
36
The mesiolingual cusp of the mandibular first molar contacts: A. the lingual embrasure between the maxillary first molar and second premolar B. the distal marginal ridge of the maxillary second molar C. the central fossa of the maxillary first molar D. the lingual groove of the maxillary first molar E. the lingual embrasure between the maxillary first molar and second molar
A. the lingual embrasure between the maxillary first molar and second premolar
37
The distolingual cusp of the mandibular second molar contacts: A. the lingual embrasure between the maxillary first molar and second molar B. the lingual groove of the maxillary second molar C. the central fossa of the maxillary second molar D. the lingual groove of the maxillary first molar E. the lingual embrasure between the maxillary second molar and third molar
B. the lingual groove of the maxillary second molar
38
The mesiolingual cusp of the mandibular third molar contacts: A. the lingual embrasure between the maxillary second molar and third molar B. the distal marginal ridge of the maxillary second molar C. the central fossa of the maxillary second molar D. the lingual groove of the maxillary third molar E. the buccal embrasure between the maxillary second molar and third molar
A. the lingual embrasure between the maxillary second molar and third molar
39
In postural (physiologic) rest position, the teeth are in: A. firm contact B. light contact C. no contact D. deflective contact
C. no contact
40
In the diagram of Posselt's envelope of motion, maximum intercuspal position is the A. lowest point. B. most anterior point. C. most posterior point. D. most superior point
D. most superior point
41
Moving the mandible from a maximum intercuspal position to a retruded contact position usually results in A. increased occlusal vertical dimension. B. increased horizontal overlap. C. decreased vertical overlap. D. all of these
B. increased horizontal overlap.
42
Anterior guidance is a result of A. horizontal and vertical overlap. B. vertical and posterior cusp height. C. horizontal overlap and posterior cusp height. D. intercondylar distance and freeway space. E. intercondylar distance and postural vertical dimension
A. horizontal and vertical overlap.
43
In a patient with a left canine protection, the mesiolingual surface of the maxillary right first molar contacts the distofacial, surface of the mandibular right first molar during a left lateral excursion. This contact is A. normal. B. evidence of group function. C. a working side interference. D. a nonworking side interference. E. normal, and a nonworking side interference.
D. a nonworking side interference.
44
When the incisal edges of the anterior teeth are placed in end-to-end contact, the condyles of the mandible move A. backward. B. forward only. C. downward only. D. downward and forward
D. downward and forward (PROTRUSION) backward and upward (RETRUSION)
45
The nonworking condyle performs which of the following movements? A. Straight forward B. Downward, forward and lateral C. Downward, forward and medial D. Downward, backward and medial
C. Downward, forward and medial Working condyle- rotates vertically
46
Which of the following muscles originates from the medial surface of the mandible and inserts into the body of the tongue and hyoid bone? A. Genioglossus B. Masseter C. Pterygoideus D. Risorius E. Temporalis
A. Genioglossus
47
Muscles involved in elevating the mandible include all of the following EXCEPT A. the lateral pterygoid B. the masseter C. the medial pterygoid D. the temporalis
A. the lateral pterygoid TIME T- Temporalis I- Internal/ Medial Pterygoid M- Masseter E- External/ Lateral Pterygoid TIM= Internal Protrusion, Elevation E= External Protrusion
48
A patient with a paralyzed right lateral pterygoid muscle is instructed to open his mouth wide. Which direction will the mandible take on opening? A. To the left B. To the right C. Straight (without deviation to right or left) D. None of the above. The mandible will not move.
B. To the right INJURY- Same side except uvula LATERAL MOVEMENT- Opposite side
49
The disk (meniscus) of the temporomandibular joint is moved forward principally by the A. condyle. B. articular capsule. C. stylomandibular ligament. D. medial pterygoid muscle. E. lateral pterygoid muscle
E. Lateral Pterygoid muscle Lateral Protrusion
50
All of the following cranial nerves carry general visceral efferent (GVE) fibers EXCEPT A. III B. IV C. VII D. IX E. X
B. IV 1973

B. Oral Anatomy (4 decks)

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