DA Compendium page 11 (Occlusion)

Question 1

What are the muscles of mastication?

Answer 1

Temporalis
Masseter
Medial Pterygoid
Lateral Pterygoid

Question 2

Which of the muscles of mastication is least likely of the 4 muscles to be palpated by a clinician?

Answer 2

Lateral pterygoid muscles

Question 3

If left lateral pterygoid is severely damaged and patient is instructed to open their mouth, the mandible will deviate or move in which direction?

Answer 3

To the same side as the damaged lateral pterygoid muscle is located on. So in this case, the left.

Question 4

Which muscles are involved in normal closure of the mandible?

Answer 4

Temporalis anterior fibers
Medial pterygoid
Masseter

Question 5

Which muscle pulls the condyle completely out of the fossa to the anterior during maximum opening

Answer 5

Inferior belly of Lateral Pterygoid

Question 6

Which portion of the articular disc is in significant contraction at maximum opening?

Answer 6

Superior belly of articular disc

Question 7

The MF cusp of Maxillary 1st molar occludes in where in a Class I occlusion?

Answer 7

in the MF groove of Mandibular 1st molar

Question 8

The cusp tip of the maxillary canine articulates where in Angle’s Class I Occlusion?

Answer 8

With the facial embrasure between the mandibular canine and first premolar