TMJ assessment

Question 1

Teeth coming together normally is called

Answer 1

occlusion

Question 2

an overbite, underbite, or anterior open bite would be defined as a

Answer 2

malocclusion

Question 3

three cardinal features of temporomandibular disorders (TMDs)

Answer 3

orofacial pain
restricted jaw motion
joint noise

Question 4

gliding, translation, or sliding movement occurs in the _____ joint cavity

Answer 4

upper

Question 5

rotation or hinge movement occurs in the _____ joint cavity

Answer 5

lower

Question 6

primary ligament reinforcing the TMJ

Answer 6

lateral ligament

Question 7

Early clicking implies a developing dysfunction. T or F

Answer 7

True

Question 8

late clicking is more likely to mean the development of a chronic problem. t or f

Answer 8

true

Question 9

Stage of disc dysfunction:
Disc anterior and medial
Reciprocal click present (early on opening, late on closing)
Severe consistent pain

Answer 9

stage 2

Question 10

Stage of disc dysfunction:
Reciprocal consistent click present (later on opening, earlier on closing)
Most painful stage

Answer 10

stage 3

Question 11

Stage of disc dysfunction:
Click rare (disc no longer relocates) 
No pain

Answer 11

stage 4

Question 12

“soft” or “popping” clicks may be normal sounds from soft tissue movement. t or f

Answer 12

true

Question 13

what pulls the disc forward during opening?

Answer 13

superior head of lateral pterygoid

Question 14

what is bruxism?

Answer 14

clenching or grinding of teeth, especially during sleep

Question 15

early phase of mandibular depression 25-50% is dominated by

Answer 15

rotation in inferior joint cavity

Question 16

the late phase of mandibular depression 50-100% is dominated by

Answer 16

anterior translation in the superior joint cavity

Question 17

normal functional test for opening mouth

Answer 17

2 knuckles or three fingers

Question 18

lateral deviation early in opening indicates

Answer 18

muscle spasm

Question 19

lateral deviation late in opening indicates

Answer 19

capsulitis or hypomobile capsule

Question 20

C pattern of opening indicates

Answer 20

hypomobility in convex side

Question 21

S pattern of opening likely indicates

Answer 21

muscular imbalance or medial displacement of condyle that “walks” around the disc on the affected side

Question 22

to determine whether there is pathology involving the seventh cranial (facial) nerve
Tap the parotid gland overlying the masseter muscle. If the facial muscles twitch, the test is considered positive.

Answer 22

Chvostek test