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ortho 3 > TMJ > Flashcards

TMJ Flashcards

1
Q

TMJ prevalence

A 
Females
25-44 yr
W or w/o trauma
Bruxing
Iatrogenic
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2
Q

TMJ closing muscles

A

Masseter
Temporalis
medial pterygoid

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3
Q

TMJ opening muscles

A

Initially gravity followed by digastric for forceful

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4
Q

TMJ retrusion muscles

A

Post temporalis

Assisted by deep masseter

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5
Q

TMJ protrusion muscles

A

Bilateral heads of lateral pterygoid

Assisted by medial pterygoid

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6
Q

TMJ laterotrusion muscles

A

Contralateral contraction of lateral and medial pterygoid

Ipsi contraction of temporalis and masseter

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7
Q

Masseter

A

Elevation of mandible to close mouth and chew

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8
Q

Temporalis

A

Chewing: elevating and returning

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9
Q

Medial pterygoid

A

Mastication

Mandibular elevator and protrudes w/ mastication and active in speech

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10
Q

Digastric

A

Depresses mandible and raises hyoid bone
Part of suprahyoid bone
Fixate or depress hyoid bone and thyroid cartilage for swallowing

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11
Q

Lateral pterygoid

A

Mastication
Active in mouth opening
Near final closure
Espy during transition from true hinge movement to combined rotation and translation

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12
Q

TMJ opening - rotation occurs

A

0-26 mm

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13
Q

TMJ opening - ant translation occurs

A

After 26 mm

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14
Q

Laterotrusion

A

Ipsilateral condyles rotates and contralateral condyle translates

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15
Q

Protrusion

A

Both condyles translate

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16
Q

Occlusion

A

Bringing of opposing surfaces of teeth into contact

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17
Q

Occlusion class 1

A

Normal
2mm overbite
2mm overjet
Medial buccaneers 1st molar

18
Q

Occlusion class 2

A

Overbite
>2mm overbite and overreact
Cusp contact lies in front of groove

19
Q

Occlusion class 3

A

Underbite
>2mm overjet
Cusp is behind of groove

20
Q

Anterior open bite

A

RA

Split induced

21
Q

Posterior open bite

A

Splint induced

22
Q

Cross bite

A

Asymmetrical mandibular growth

23
Q

Bite stick

A

Contra pain - joint

Ipsi or bilateral pain = muscles

24
Q

Myofascial pain criteria

A 
Taut band
Tender nodule
Recognition of pain
Local twitch response
Referred sensory sign 
Limited ROM
Painful contraction and weakness
25
Q

Indication for splint

A

Myofascial Pain when wakes up with pain and PT has not helped
Severe OA pain
Biofeedback to stop clenching

26
Q

Best tests for TMJ

A

Palpation
Pain during movement
Maximal mouth opening deficit/asymmetrical
Active widest opening

27
Q

TMJ exercises

A

Isometrics in neutral - proprio and strength
Hold/relax - ROM, tension
Painful/catch clicking avoided

28
Q

TMJ disc classification

A

“Anterior disc displacement w/“
Reduction - click
Incoordination - click/lock
Without reduction - lock

29
Q

TRISMUS

A

Lock jaw/ cant open wide

30
Q

TMJ inflammation

A 
Ice and later heat
Massage - MLD
Gentle exercise
NSAIDS
Injection
31
Q

TMJ DJD

A 
Exercises: hinge. Midline open
Joint protection: diet, sleep position
NSAIDS
Stabilization splint
Injection
32
Q

TMJ acute myalgia

A

Ice, massage to tx pain, inflammation
Rest
Gradual mobilization exercises

33
Q

TMJ trismus and splinting

A

Modalities
Vigorous mobes
Stretching exercises
The rabbits or easy flex

34
Q

TMJ dyskinesia

A 
Coordation excersie
AROM w/ and w/o cutes
Isometrics
Mild resistance
Mirror, palpation, etc
35
Q

TMJ hypermoblility

A

Avoidance
Limited ROM - hinge axis, Madeline open
Resistive/isometric w/in restricted range

36
Q

TMJ hypomobility

A

Modalities increase tissue ext.
vigorous mobes
A and PROM

37
Q

TMJ functional ranges

A

Open 36mm

Laterotrusion and protrusion 6mm

38
Q

TMJ opening range

A

> 40 mm or 3 fingers at DIP

39
Q

TMJ norm laterotrusion

A

6-8mm or about one tooth width

40
Q

TMJ norm protrusion

A

6-8 mm

41
Q

Deviation vs deflection

A

Deviation S curve

Deflection stays to side

ortho 3 (12 decks)

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