TMJ

Question 1

The TMJ is a ___ joint (classification)

Answer 1

Hinge

Question 2

Opening of the jaw requires ___ of the masseters and temporalis

Answer 2

Relaxation

Question 3

Once the jaw is open 1cm, the ____ pulls on the disc and condyle to continue opening

Answer 3

Lateral (external) pterygoid

Question 4

At the end point of jaw opening, the ____ mm pull the mandible inferior and retro

Answer 4

Digastric

Question 5

Name the two muscles most responsible for the closing of the jaw.

Answer 5

1. Masseters

2. Temporalis

Question 6

The ___ test looks for an elimination in clicking when the patient bites down on a tongue depressor. This indicates a mechanical cause of anterior disc displacement in the TMJ

Answer 6

Tongue blade

Question 7

The ___ test looks for an increase in pain with inferior and anterior movement of the mandible. If positive, capsular irritation is expected.

Answer 7

Stretch

Question 8

In the ___ test, synovitis is suspected when the mandible is stressed superior and posterior

Answer 8

Compression

Question 9

In this TMJ condition the patient reports popping with opening and closing of the jaw. This is due to posterior ligament deterioration when the condyle must roll over it to open/close

Answer 9

Anterior disc displacement with reduction…

Question 10

This TMJ condition is due to an overstretched capsule. The stretch test and passive lateral deviation increase pain.

Answer 10

Capsulitis

Question 11

In this TMJ condition, people can say their “bite is off”. The temporalis muscles are hypertonic. There is pain with full closure. The tongue blade test reduces discomfort.

Answer 11

Synovitis