Introduction to TMDs and CMDs

Question 1

Soft splint

Answer 1

usually for nocturnal bruxist (sleep grinder) an be an upper or lower, like a thin mouthguard

Question 2

Stabilisation splints

Answer 2

Aiming to make the resting cusp position the same as the intercuspal position.

hard splint (therefore harder to make), should cover upper teeth (must have a good impression),

Question 3

Guidance ramps

Answer 3

Allows the sliding of the jaws

Question 4

Answer 4

Michigan splint (type of stabilisation splint)

Question 5

Answer 5

Tanner appliance (similar to Michigan splint for mandibular arch)

Question 6

What causes the clicking of jaw?

Answer 6

Anterior disc displacement with reduction

Question 7

Anterior repositioning splint

Answer 7

Get patient to protrude jaw and record this position.
This splint then fits on the lower arch, keeps the patients condyle sitting forward so when the patient opens their mouth there is no click.

Over time the disc repositions and eventually the click will go away and the patient won’t have to wear the splint.

Question 8

Making a repositioning splint

Answer 8

Question 8

Making a repositioning splint

Answer 8

Question 9

Why would you avoid putting a repositioning splint on a young patient?

Answer 9

As they are growing, their condyle may grow up into the glenoid fossa and mean their protruded occlusion would be made permanent for life.

Question 10

Why would you not use a ‘partial’ coverage split?

Answer 10

The space will mean that the teeth will over-erupt

Question 11

Important things to remember about splints review

Answer 11

Review patients reguarly - weekly !! to ensure no poor occlusion problems are becoming permanent.