Exam 2: TMJ Flashcards

(58 cards)

1
Q

what is the function of the lateral temporal mandibular ligament

A

prevent excessive A and P, and lateral movement of the jaw

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2
Q

what is the supsension quality of the lateral mandibular ligament

A

this is the main supension ligament during opening of the jaw

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3
Q

what kind of joint is the jaw

A

hinge joint

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4
Q

what are the medial ligaments

A

sphenomandibular ligament and stylomandibular ligament

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5
Q

function of the sphenomandibular ligament

A

suspends the mouth during wide opening

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6
Q

function of the stylomandibular

A

acts a stop to extreme opening

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7
Q

what is the mouth disc made out of

A

fibrocartilage

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8
Q

Does the disc have nerve or art

A

no it is avascular and aneural

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9
Q

what is the retrodiscal tissue attached ant and post

A

the post capsule and the ant tympatic plate
- this prevents the disc from going to far anterior

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9
Q

what is the disc attached to medially and laterally

A

the condyle view the medial and lateral ligament

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10
Q

what are disc issue normally due to

A

stretching of retrodiscal tissue

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11
Q

what happens when we open the mouth

A

the disc moves forward with the condyle and creates stress on the retrodiscal tissue

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12
Q

what happens when we close the mouth

A

the retrodiscal tissue pulls the disc back to move with the condyle

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13
Q

where is the upper compartment

A

disk and mandibualr fossa

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14
Q

where is the lower compartment

A

disc and the condyle of the mandicular bone

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15
Q

what plane does the mouth move in for opening and closing

A

cornal
- plane passes through the condyles

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16
Q

phase 1 of opening

A

rot of the condyle in the lower compartment

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17
Q

pahse 2 of opening

A

translation of the disc and the condyle together in the upper compartment

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18
Q

closing and opening phases

A

close is the same as opening but opp

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19
Q

who much movement do we see with opening

A

40-50 mm

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20
Q

what kind of movement are mandibular protrusion and retrusion

A

translation movement

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21
Q

what comp does protrusion and retrusion occur in

A

upper comp

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22
Q

how much movement do we see with protrusion

A

6-9 mm

manible juts forward

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23
Q

how much movement do we see with retrusion

A

3 mm
mandible pulls back

24
mandibular lateral deviation axises
vertical and horizontal axis AP axis
25
vertical axis for mandibular lateral deviation
spin around the isp condyle translation of contra condyle
26
how much movement do we see with mandibular lateral deviation
8 mm
27
A-P axis mandibular lateral deviation
spin in the frontal plane of isp condyle depression of contra condyle
28
what motions are see in chewing and griinding
all of the motions
29
what do we use to open our mouth
grvaity, inf lateral pyertiod, ant epigastric
30
mouth closers
temporalis, masseter, medial pyterygoid, sup lat pyertiod - keeps disc sligtly forward during closing
31
right laterl deviator muslces
left medial and lat ptyeriod right post temporilis muscle
32
left lat deviators
right medial and lat ptyeriod left post temporilis muscle
33
protruders
bilat infer ptyeroids assisted by medial ptyeroids
34
retruders
post temporalis muscle post diagastric deep masseter
35
DDWOR
history of jaw locking or catching
36
DDWR
opening or closing clicks - disc displacement with reduction
37
lateral pyter what is the cheif complaint if you see this issue
lateral face pain - pain reproduced with resisted protrusion
38
power stroke
forced closing of the mouth
39
macrotrama TMD
fracture dislocation
40
diseas and TMD
OA RA infections
41
reffered pain TMD
referred pain around the eyes, ears, zygomatic arch, temple areas
42
ear problem with TMD
tinnitus - ringing of the ears
43
where do we palpate
lateral pole behind lateral poles along the lateral ligamament
44
unilateral loading with gauze
gauze - distraction non gauze - closing down
45
what does no pain mean with compression
release means reliefs of compression
46
what does pain with comrpession mean
the capsule is irritated from tensile loads
47
anterior disc location that reduces - openeing
loud clicking during opening - this means the disc has relocated
48
anterior disc location that reduces - closing
the disc has been displaced ant, condyles behind the disc
49
anterior disc location that does not reduce general
no clicking - there are restriction during opening may have a past history of clicking but this is gone now
50
anterior disc location that does not reduce - what is the issue
restriction due to disc blocking translation
51
TMJ capsular restrictions
deviation to the right with less opening deviation to the right with protrusion decrease L lat movements there is not history of clicking there is not snapping on the distraction of the joint
52
TMJ subluxation
excessive opening palpate lateral pole to see with they move to far forward may hear a nosie at the start of close or end of large open may be due to muscle imbalances
53
what do we see with unilateral sublux
might see quick deviation to the contralateral side at the end of openeing
54
translation occurs to soon with opening
jutting of the jaw forward with opening may be due to muscle imbalances
55
what to do with translation occuring to soon
focus on neuromuscluar reducation
56
what does head posture have to do with TMD
forawrd head can effect the position of the manibles may result in a bad bite pattern
57
treatment for capsular restriction
aim to stretch the capsule manually distract - joint play techniques self distract techniques - gauze on molars