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MODULE 2: CLINICAL SCIENCES “A” 54Q > Temporomandibular Disorders – 13% 7Q > Flashcards

Temporomandibular Disorders – 13% 7Q Flashcards

1
Q

A TMJ problem after debanding may indicate

A

CR / CO discrepancy

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2
Q

Name the 3 types of condylar movements

A

rotation/hinge

translation

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3
Q

In Posselt’s envelope, what is the last closing movement ?

A

Hinge

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4
Q

describe the disc position of the TMJ in a patient with closed lock

A

anterior disc displacement without reduction

limited opening (~23mm)

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5
Q

describe the disc position of the TMJ when the patient is in open lock

A

the condyle is entrapped in front of the lagging disc and cannot slide back under the fossa

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6
Q

the mandible can only be dislocated (posteriorly/anteriorly)

A

anteriorly

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7
Q

Normal maximum opening is ___ - ___ mm

A

50 - 60mm

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8
Q

You can induce _________ due to anterior disc displacement after 30 min of reduction (opening)

A

clicking

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9
Q

anterior disc displacement (is/is not) a common symptom of TMD

A

is not

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10
Q

during anterior disc displacement, the posterior border of the disc will thin and the inferior restrodiscal lamina is elongated resulting in the condyle articulating on the _____________ border of the disc instead of the _______________ zone.

A

posterior

intermediate

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11
Q

referred TMD pain travels toward the _________ and can cause what symptom?

A

head (cehpalad direction)

headache

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12
Q

Innervation of the TMJ include two branches on cranial nerve ___. Also name the 2 branches.

A

V3

Auriculo-temporal, masseteric

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13
Q

what type of joint is the TMJ? clue: it is bi-arthrodal

A

ginglymoarthroidial

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14
Q

TMJ is a __________ joint where the articular surface is lined by a thin ___________ membrane

A

synovial

synovial

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15
Q

The articulating surface of the condyle is covered with _______________, which may be associated with chondrocytes

A

dense fibrous CT

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16
Q

The superior joint compartment of the TMJ provides _______________ movement

A

translational

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17
Q

The inferior joint compartment of the TMJ provides ____________ movement

A

rotational

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18
Q

the glenoid fossa is lined with ?

A

hyaline cartilage / fibrocartilage

19
Q

does the glenoid fossa undergo remodeling?

A

yes, and this can affect the position of the chin

20
Q

what happens to the glenoid fossa with age?

A

it gets deeper

21
Q

what is the major area of adaptation and compensation of the Mn?

A

Ramus

22
Q

The degenerative joint disease osteoarthritis will present clinically as: (3)

A

sudden change in occlusion

open bite

pain

23
Q

what is the most important cardinal symptom of TMD?

A

limited opening

24
Q

What are the subjective cardinal symptoms of TMD?

A

Pain – does not cross midline (psychogenic)

Limited opening *most important

Noise

25
Q

What are the objective cardinal symptoms of TMD?

A

ADD

locking

condylar dislocation

26
Q

what is a symptom?

A

something a patient notices. Are subjective and open to individual interpretation

27
Q

what is a clinical sign?

A

an abnormality a health care professional notes during an examination. More subjective and usually confirm symptoms the patient describes

28
Q

what 3 things are myofacial pain dysfunction related to?

A

occlusion

trauma

physiologic factors

29
Q

what is the primary etiology of TMD?

A

parafunctional habits

30
Q

unlike other joint discs, the TMJ disc is made of

A

fibrous CT

others are hyaline

31
Q

the the condyle is 2x larger in the _________ dimension than in the _____________ dimension

A

transverse

AP

32
Q

moving dentition from CR → CO will ( inc / dec ) the VDO

A

increase

33
Q

who has more prevalence of TMD: general population or orthodontic population? whose study?

A

they are the same

Sadowsky and BeGole

34
Q

TMD affects which sex more?

A

females

35
Q

IF TMD is stress related, patients are also likely to present with

A

trismus and muscle spasms

36
Q

anatomically, TMD is due to

A

pathology or derangements

37
Q

Treatment for TMD consists of: (3)

A

Flat appliance for muscle relaxation (guards)

Stress management

Physical therapy

38
Q

the Pancherz Herbst study showed that TMD

A

increased for 3 months then returned to normal

39
Q

Joint sounds found in ___% of the population

A

25%

40
Q

Smith and Freer studied TMD in Ext vs Non-Ext patients and found:

A

no significance in rate of soft clicks

41
Q

T/F: Larsson and Ronnerman said that ortho can be preformed without fear of creating TMD

A

True

42
Q

Gianelli found no difference in condylar position in ext vs non-ext groups but Dibbets and VanDerWeele found increased clicking in:

A

4Bi ext group

43
Q

mandible will deviate to (affected / non-affected) side upon opening

A

affected

44
Q

what condition of a large salivary gland can mimic TMJ?

A

Parotitis

MODULE 2: CLINICAL SCIENCES “A” 54Q (6 decks)

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