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TMD > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

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

A

Sagittal Axis

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2
Q

What axis does the Horizontal Plane rotate around?

A

Vertical Axis

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3
Q

What axis does the Sagittal Plane rotate around?

A

Horizontal Axis

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4
Q

What protrudes, opens, and laterally moves mandible?

A

Lateral Pterygoid

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5
Q

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

A

Temporalis

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6
Q

What provides most masticatory forces, and elevates the mandible?

A

Masseter

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7
Q

What rotates and positions the head?

A

Posterior Neck Musculature

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8
Q

What elevates, protrudes, and laterally positions the mandible?

A

Medial Pterygoid

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9
Q

What restricts excessive mandibular movement?

A

Ligaments

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10
Q

What depresses the mandible, and raises the hyoid bone?

A

Digastric

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11
Q

What pulls the disk forward?

A

Lateral Pterygoid

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12
Q

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

A

shorter; wider

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13
Q

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

A

longer; narrower

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14
Q

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

A

shorter

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15
Q

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

A

longer

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16
Q

What is Immediate side shift measured in?

A

tenths of mm

17
Q

What is Progressive side shift measured in?

A

degrees

18
Q

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.

A

minimum; shorter, shallower

19
Q

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

A

maximized; longer; deeper

20
Q

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

A

shorter

21
Q

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

A

longer

22
Q

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

A

shorter

23
Q

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

A

longer

24
Q

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

A

longer

25
Q

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

A

shorter

26
Q

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.

A

shorter

27
Q

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

A

longer

28
Q

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

A

Temporomandibular ligament

TMD (2 decks)

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