TMD Flashcards
Is the articular disc innervated?
NO! (cannot feel pain from the disc)
what mm are responsible for depression of the mandible (opening)?
- suprahyoid mm
- lateral pterygoid
what mm are responsible for elevation (closing) of the mandible?
- masseter
- temporalis
- medial pterygoid
- buccinator
what mm are responsible for lateral excursion?
ipsilateral temporalis, contralateral lat pterygoid
what are norm values for depression (opening)?
40-45 mm
what are norm values for lateral excursion?
10-12mm bilat
what are norm values for protrusion
5-10 mm
what are norm values for overbite?
2-3 mm
what are norm values for overjet?
2-3mm
when opening your mouth, the first 15-25 mm is primarily ____ motion of the condyle in the ____ joint space
rotational
inferior
The second phase of opening is primarily ____ motion in the ____ joint space
translatory gliding
upper
how does FHP impact mandible position?
more retruded position
When observing facial symmetry, you notice that the pt’s eye and angle of mouth are elevated on same side. Is this likely a craniovertebral or a craniomandibular problem?
craniovertebral/craniocervical
(think peyton manning - has had many neck surgeries)
When observing facial symmetry, you notice that the pt’s eye and angle of mouth are elevated on opposite sides. Is this likely a craniovertebral or a craniomandibular problem?
Craniomandibular
What are the 3 classifications for TMD pn?
- Muscle disorders
- Disc displacements
- Joint displacements
What are the key findings for a pt who fits in the MUSCLE DISORDER group?
- multiple trigger pts of masticatory & upper CS mm (lateral pterygoid = most commonly involved mm in TMD cases)
- full AROM
- S-shaped
- pn w/ biting on ipsilateral side
- no jt sounds
What are the key findings for a pt who fits in the JOINT DISORDER group?
- pn w/ palpation of multiple jt structures (rocabado pain map)
- reduced AROM
- C or J shaped
- Pn w/ biting on contralateral side
- often joint sounds
What are the key findings for a pt who fits in the DISC DISORDER group?
presence of disc displacement is easy to ID, hard to dx specifically
- joint sounds/ palpable click in jt(s)
- pn w/ resisted mouth opening strongly points to non-reducing disc (doesnt click self back into place)