Exam 1

Question 1

What axis does the Coronal (Frontal) Plane rotate around?

Answer 1

Sagittal Axis

Question 2

What axis does the Horizontal Plane rotate around?

Answer 2

Vertical Axis

Question 3

What axis does the Sagittal Plane rotate around?

Answer 3

Horizontal Axis

Question 4

What protrudes, opens, and laterally moves mandible?

Answer 4

Lateral Pterygoid

Question 5

What is the primary positioner, elevates, and retrudes the mandible?

Answer 5

Temporalis

Question 6

What provides most masticatory forces, and elevates the mandible?

Answer 6

Masseter

Question 7

What rotates and positions the head?

Answer 7

Posterior Neck Musculature

Question 8

What elevates, protrudes, and laterally positions the mandible?

Answer 8

Medial Pterygoid

Question 9

What restricts excessive mandibular movement?

Answer 9

Ligaments

Question 10

What depresses the mandible, and raises the hyoid bone?

Answer 10

Digastric

Question 11

What pulls the disk forward?

Answer 11

Lateral Pterygoid

Question 12

The Greater the Immediate Bennett Side Shift of the mandible, the … the cusps must be and/or the … the fosse must be.

Answer 12

shorter; wider

Question 13

The Lesser the Immediate Bennett Side Shift of the mandible, the … the cusps must be and/or the … the fosse must be.

Answer 13

longer; narrower

Question 14

The Greater the Progressive Bennett Side Shift of the mandible the … the cusps must be.

Answer 14

shorter

Question 15

The Lesser the Progressive Bennett Side Shift of the mandible the … the cusps must be.

Answer 15

longer

Question 16

What is Immediate side shift measured in?

Answer 16

tenths of mm

Question 17

What is Progressive side shift measured in?

Answer 17

degrees

Question 18

When the angle of the Eminentia is gently sloped, the amount of disarticulation of the posterior teeth is at a …; hence … cusps and … fosse are required so as not to interfere with the incisal function of the anterior teeth.

Answer 18

minimum; shorter, shallower

Question 19

When the angle of the Eminentia is steeper, the amount of disarticulation of the poster teeth is …; hence … cusps and … fosse may exist.

Answer 19

maximized; longer; deeper

Question 20

The more nearly parallel the plane of occlusion is to the angle of the eminentia, the … the cusps MUST be.

Answer 20

shorter

Question 21

The more the plane of occlusion diverges from the angle of the eminentia, the … the cusps MAY be.

Answer 21

longer

Question 22

The greater the horizontal overlap of the upper anterior teeth, the … the cusps of the posterior teeth must be.

Answer 22

shorter

Question 23

The lesser the horizontal overlap of the upper anterior teeth, the … the cusps of the posterior teeth must be.

Answer 23

longer

Question 24

The greater the vertical overlap of the upper anterior teeth, the … the cusps of the posterior teeth may be.

Answer 24

longer

Question 25

The lesser the vertical overlap of the upper anterior teeth, the ... the cusps of the posterior teeth may be.

Answer 25

shorter

Question 26

The steeper the Curve of Spee (shorter the radius) the ... the posterior cusps must be in order to allow posterior discussion by anterior teeth for incising function.

Answer 26

shorter

Question 27

The flatter the Curve of Spee (longer the radius) the ... the posterior cusps may be.

Answer 27

longer

Question 28

What restricts retrusive and rotational movement; forces the condyles to translate forward and down the articular eminence?

Answer 28

Temporomandibular ligament