Temporomandibular Joint Dysfunction

Question 1

What is the Capsular Pattern of the TMJ?

Answer 1

• Limitation of mouth opening
• Deviation to the painful side

Question 2

Normal ROM for Mouth Opening?

Answer 2

35-55 mm

Question 3

Muscles associated with Opening? (depression of the mandible)

Answer 3

LALALALA

• Lateral Pterygoid

Question 4

Muscles associated with closing of the mouth?

Answer 4

“MMT”

• Medial Pterygoid
• Masseter
• Temporalis

Question 5

Muscles associated with Protrusion of the Mandible?

Answer 5

P for Protrusion and Pterygoids

• Medial and Lateral Pterygoids

Question 6

Muscles associated with Retraction of the Mandible?

Answer 6

Temporalis

Question 7

Muscles associated with Lateral Deviation of the Mandible?

Answer 7

Contralateral:

• Medial and Lateral Pterygoids

Ipsilateral:

• Temporalis
• Masseter

Question 8

Key things to note with Disc Displacement with Reduction?

Answer 8

“Pops” or “Clicks” with opening and closing

Question 9

What are the clicks/popping associated with opening or closing?

Answer 9

Opening:
- Reduction of the Disk

Closing:
- Disk displacing anteriorly

Question 10

Key things to note with Disc Displacement without Reduction?

Answer 10

• Intermittent locking without joint noises
• Limitation of mouth opening (20-25 mm)
• Deviation of mandible towards involved side

Question 11

How differentiate TMJ hypomobility and general hypomobility

Answer 11

General hypomobility:

• Complaints of decreased ROM
• NO complaints of pain

Question 12

Similarities and differences seen between capsulitis and synovitis?

Answer 12

Similarities:

• Reports of Pain

Differences:

• Synovitis: No mandible deviation
• Capsulitis: See Deviation of the Mandible towards painful side

Question 13

HYPO vs Hypermobility Deviation Differences?

Answer 13

Hyper:

• Deviation towards OPP side

Hypo:

• Deviation towards SAME side