TMJ Anatomy

Myogenous TMD
(Muscle Generated Pain)

- Common with Teeth
Clenching


Normal TMJ


Anterior TMJ Disc Displacement

- Usually no noise
- Usually no locking


Posterior TMJ Disc Displacement

- May "clunk" on opening


Anterior TMJ Disc Dislocation

- Usually click/pops
- May lock closed
- Usually Pain


Posterior Disc Dislocation

- Usually no noise
- Can't close fully
- Teeth don't meet in posterior
- May "lock" half open
- Painful to open and close fully

 

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© 2004 Temporomandibular Disorders and Orofacial Pain. American Academy of Orofacial Pain. All rights reserved.
Edited by Stephen J. Harkins, D.D.S., P.C.
Illustrations by Michaela Todd