Introduction to Occlusion

Question 1

What muscles elevate the mandible?

Answer 1

1. Masseter
2. Medial Pterygoid
3. Temporalis

Question 2

Which muscles retrude the mandible?

Answer 2

1. Posterior temporalis
2. Posterior digastric

Question 3

Which muscles protrude the mandible?

Answer 3

Inferior lateral pterygoid

Question 4

Which muscle moves the mandible in laterotrusion?

Answer 4

Contralateral inferior lateral pterygoid

Question 5

Where and what does the masseter muscle do?

Answer 5

Cheek area
Elevate mandible

Question 5

Which muscle stabilize the articular disc when the mandible returns to centric?

Answer 5

Superior lateral pterygoid

Question 6

Where and what does the medial pterygoid muscle do?

Answer 6

Inner cheek area
Elevate mandible

Question 7

Where is the lateral pterygoid muscle and what does it do?

Answer 7

Horizontal from ear to cheek

Question 7

Where and what does the temporalis muscle do?

Answer 7

Side of head near ear
Elevate the mandible

Question 8

What is centric relation?

Answer 8

POSITION OF THE JAW in terms of the CONDYLE

Question 8

Locate the
suprahyoid muscles
Infrahyoid muscles
Geniohyoid muscles
Digastric muscles

Answer 8

Suprahyoid: group of muscles above hyoid bone
Infrahyoid: group of muscles below hyoid bone
Geniohyoid: center muscle in neck going down
Digastric: muscle that goes from chin, curves down, goes back up to the back of chin area (V SHAPED)