Occlusion L2/L3 - TMJ and Masticatory muscles Flashcards Preview

Dentistry Module 4 > Occlusion L2/L3 - TMJ and Masticatory muscles > Flashcards

Flashcards in Occlusion L2/L3 - TMJ and Masticatory muscles Deck (19)
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1
Q

What joint is between the temporal bone and mandible?

A

Synovial joint

2
Q

In a synovial joint what is the name given to the cartilage that surrounds the bone?

A

Hyaline articular cartilage

3
Q

Where does the condyle sit in the TMJ?

A

Glenoid fossa

4
Q

How many layers does the joint capsule have?

A

2 layers: outer fibrous layer and inner synovial membrane

5
Q

The lateral ligament attaches to the lateral surface of the articular eminence to posterior surface of condyle, restricts what type of movement?

A

Restricts posterior, lateral and inferior movement.

6
Q

The articular disc has 5 compartments what are the names of each compartment?

A

Posterior extension

Posterior band

Intermediate zone

Anterior band

Anterior extension

7
Q

The posterior extension of the articular disc has 2 parts what are they?

A

Upper and lower layer

Upper layer – vascular and elastic

Lower layer – densely innervated and vascular

8
Q

Anterior disc displacement with reduction results in a what?

A

Clicking of the TMJ

9
Q

Muscles of mastication are associated in three group, through their respected locations. What are these locations?

A

Skull – mandible

Mandible to hyoid

Hyoid stabilisers

10
Q

Which muscles are associated with skull-mandible?

A

Masseter

Temporalis

Medial pterygoid

Lateral pterygoid

11
Q

Which nerve innervates the muscle of mastication?

A

Trigeminal V3 motor root

12
Q

The masseter is broken down superficial and deep masseter. What is the origin and insertion of the superficial masseter?

A

Origin: zygomatic arch/bone

Insertion: angle/ramus of mandible

13
Q

The masseter is broken down superficial and deep masseter. What is the origin and the insertion of the deep masseter?

A

Origin: Inner aspect of zygomatic arch

Insertion: angle/ramus of mandible

14
Q

What is the origin and the insertion of the temporalis?

A

Origin: inferior temporal line and fascia

Insertion: coronoid process

15
Q

What is the specific name given to nerve that innervates the temporalis?

A

Deep temporal nerve, V3 of the trigeminal nerve.

16
Q

What is the origin and insertion of the lateral pterygoid?

A

Origin: lateral aspect of lateral pterygoid plate

Insertion: pterygoid fovea below head of condyle

17
Q

What is the origin and insertion of the medial pterygoid?

A

Origin: medial aspect of the pterygoid plate and the maxillary tuberosity

Insertion: medial aspect of ramus/angle of mandible

18
Q

What is the name of the three muscles that are associated with the mandible to hyoid group?

A

Geniohyoid

Mylohyoid

Anterior and posterior belly of digastric

19
Q
A

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