Tmj

Question 1

Most important muscle in the TMJ

Answer 1

Lateral pterygoid muscle

Question 2

On a closed mouth where is the posterior band and the interior band

Answer 2

1200 and 900

Question 3

Completely closed mouth focuses on what?

Open mouth focuses on?

Answer 3

Disc position mostly anterior

Disc morphology

Question 4

What’s the arc of rotation if slightly opened? Wide open?

Answer 4

Hinge action

Hinge and gliding action combined

Question 5

What two exams do you use cine loop?

Answer 5

Cardiac and TMJ

Question 6

How do you position and center for TMJ exam

Answer 6

Start off with mouth closed
align perpendicular to the long axis of the mandibular condyle angle towards the nose

Have patient insert device in the mouth and follow clicking instructions

Question 7

What are the two grades for internal derangement of TMJ

Answer 7

Grade 1 is normal morphology with anterior disc displacement

Grade 2 is abnormal morphology with anterior displaced desk

Question 8

What does the medial pterygoid muscle do?

Lateral pterygoid muscle?

Answer 8

The medial closest the jaw whereas the lateral opens the job as well as protrudes and move the mandible from side to side