Occlusion Final cram

Question 1

The Myotactic reflex is considered a:

A. Polysynaptic reflex
B. Minor reflex
C. Monosynaptic reflex
D. None of the above

Answer 1

C

Question 2

12. The \_\_\_\_\_ portion of the \_\_\_\_\_\_ pterygoid muscle is inactive in opening, and active in closing.
A. Superior, medial
B. Inferior, medial
C. Superior, lateral
D. Inferior, lateral

Answer 2

C

Question 3

14. All of the following are primary elevators of the mandible except?
    a. Masseter
    b. Lateral Pterygoid
    c. Temporalis
    d. Medial Pterygoid

Answer 3

B

Question 4

19. All of the following are considered muscles of mastication except:
A.             Masseter
B.             Temporalis
C.             Buccinator
D.             Medial pterygoid
E.             lateral pterygoid

Answer 4

C

Question 5

Where do functional movements in the frontal plane begin and end?

Answer 5

ICP

Question 6

25. What artery supplies the anterior portion of the temporomandibular joint?
    A. Superficial Temporal Artery
    B. Middle Meningeal Artery
    C. Facial Artery
    D. Super Auricular Artery

Answer 6

B

Question 7

26. The angle at which the condyle moves away from a horizontal reference plane is referred to as
    A. Condylar guidance angle
    B. Anterior guidance angle
    C. Posterior controlling factor
    D. Angle of Eminence

Answer 7

A

Question 8

32. Which component of the TMJ has the most vasculature and innervation?
    a. Articular fossa
    b. Anterior band of the articular disc
    c. Posterior band of the articular disc
    d. Articular eminence
    e. Retrodiscal tissue
    f. They are all the same.

Answer 8

E

Question 9

36. The visceral (infantile) swallow occurs until:
A.            Anterior teeth erupt
B.             Posterior teeth erupt
C.             All permanent teeth erupt
D.            The tongue erupts

Answer 9

B

Question 10

39. At the end of the opening phase the mandible will move in a \_\_\_\_\_\_ direction beginning the closing phase of the chewing stroke.
A.            Anterior
B.             Superior
C.             Lateral
D.            Posterior

Answer 10

C

Question 11

42. Speech is thought of as a learned response because once speech is learned, it comes entirely under the unconscious control of the neuromuscular System.
    T/F

Answer 11

True

Question 12

51. Once teeth are in occlusion, problems with loading the masticatory structures are answered by the:
A.             Muscles
B.             Joints
C.              Nerves
D.             Ligaments

Answer 12

B

Question 13

52.Posterior guidance can be altered by tooth wear. Anterior guidance can be altered by tooth wear.
Both statements are true
The first statement is true, the second is false
The first statement is false, the second is true
Both statements are false

Answer 13

The first statement is false the second is true

Question 14

57. Proximity of ________ to _________ will increase the effect of condylar guidance on tooth morphology
    A. Posterior teeth; Anterior teeth
    B. Posterior teeth; TMJ
    C. Anterior teeth; TMJ

Answer 14

B

Question 15

58. When the lateral translation movement occurs in conjunction with an eccentric movement, the movement is known as:

A. Immediate side shift
B. Progressive side shift
C. Delayed side shift
D. Advanced shift

Answer 15

B

Question 16

59. The more anterior the tooth in the dental arch, the ______ the angle formed by the laterotrusive and mediotrusive pathways.
    A. Wider (obtuse)
    B. Narrower (acute)

Answer 16

A

Question 17

61. True or False? The Hinge Axis is considered “the movement in space characterized by two divergent points moving around a central axis of rotation.”

Answer 17

False (That describes hinge movement. Hinge Axis is “An imaginary line between the mandibular condyles around which the mandible can rotate without translatory movement”)

Question 18

62. Which of the following statements is FALSE regarding optimal functional occlusion?
    a. All tooth contacts provide axial loading of occlusal forces
    b. When the mandible moves into a protrusive position, there are adequate tooth-guided contacts on the anterior teeth to disocclude all posterior teeth immediately.
    c. In the upright head position and alert feeding position, posterior tooth contacts are heavier than anterior tooth contacts.
    d. In centric relation, the anterior teeth do not have any contact.

Answer 18

D

Question 19

63. Which of the following best defines vertical dimension of occlusion (VDO)?
    e. Vertical dimension of the face when the mandible is in centric relation
    f. Vertical dimension of the face when the mandible is in postural rest position
    g. Vertical dimension of the face when the mandible is open
    h. Vertical dimension of the face when the mandible is in centric occlusion

Answer 19

H

Question 20

65. There is a very thin bone located in the superior aspect of the fossa. This area is developed to support loading.
    A. The first statement is true and the second statement is false.
    B. The first statement is false and the second statement is true.
    C. Both statements are true.
    D. Both statements are false.

Answer 20

A

Question 21

67. Which occlusion class is often TMJ protected?
A.     	Class I
B.     	Class II, division I
C.    	Class II, division II
D.    	Class III

Answer 21

D

Question 22

69. Which of the following is not a commonly accepted therapy for TMD?

A. Orthodontic Splint
B. Surgery
C. Physical Therapy
D. Tooth Extraction

Answer 22

D

Question 23

70. Which of the following is NOT one of the 9 recommended screening questions for TMD?
    A. Do you have difficulty or pain, or both, when opening your mouth, as for instance, when yawning?
    B. Do you experience ringing noises in the ears?
    C. Are you aware of noises in the jaw joints?
    D. Do you have frequent headaches?

Answer 23

B

Question 24

75. What structure(s) maintain equilibrium (neutral position) for the anterior teeth?
A.             Lips
B.             Cheek
C.             Tongue
D.             Both A and C

Answer 24

D

Question 25

80. The need to provide permanent occlusal therapy for a TMD should be determined first by
    A. Surgery.
    B. Use of stabilization occlusal appliance.
    C. Restoration of all maxillary and mandibular teeth.
    D. Wiring the mouth closed.

Answer 25

B