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Packet Info > Dent. Anatmy: TMJ > Flashcards

Dent. Anatmy: TMJ Flashcards

1
Q

TMJ is a

True / False: loading joint
True/ False: synovial joint

A

Both statements are True

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2
Q

Inferior compartment of TMJ

A

rotation, superior compartment of TMJ= translation

> 25 mm opening

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3
Q

What part of the condyle is involved in translation?

A

anterior superior

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4
Q

What ligament restricts protrusive movement?

A

Stylomandibular ligament

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5
Q

When ligament gets taut in full mouth what happens?

A

condyles move forward

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6
Q

When yawning, which ligament tightens up so that the condyle stays in fossa & prevents retrusion?

A

Temporomandibular Ligament

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7
Q

TM Ligament attaches to?

A

zygoma & prevent excessive retrusion

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8
Q

What ligament is connected the lingual of the mandible?

A

Sphenomandibular Ligament

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9
Q

Origin & Insertion of sphenomandibular ligament:

A

Spine of the sphenoid & lingula of the mandible

- prevents excessive opening

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10
Q

Origin & Insertion of pterygomandibular raphe?

A

Hamulus of the pterygoid plate & mylohyoid line

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11
Q

Origin & insertion of temporomandibular ligament?

A

Articular eminence/posterior zygomatic arch & neck of condyle

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12
Q

Collateral (Discal) ligaments used during lateral movements & keep articulator cartilage on the ?

A

condyle head

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13
Q

Disc of TMJ is what to the condyle?

A

attached laterally

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14
Q

what type of tissue covers the condylar surface of a 10yr old?

A

Dense fibrous connective tissue

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15
Q

What covers the articulating surface of the TMJ?

A

Fibrocartilage

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16
Q

Articulating surface of TMJ in older person is covered in ?

A

Fibrous connective tissue containing chondrocytes

17
Q

Where is the phagocyte located in the TMJ?

A

Synovial membrane

18
Q

What is the direct source of nutrients to the articulating surfaces?

A

Diffusion from synovial fluid

19
Q

What type of connective tissue is in the middle portion of the retrodiscal pad?

A

Loose CT with blood supply

20
Q

Patient is anesthetized & pain at the TMJ is gone, what nerve is was anesthetized?

A

Auriculotemporal N (CN V3)

21
Q

TMJ innervation is from?

A

Auriculotemporal N

22
Q

Which criteria determines the progressive shift of nonworking codyle?

A

Medial wall anatomy of the glenoid fossa

23
Q

Cusp tip of tooth #6 & 27 touch on laterotrusive movement, where is the condyle on the non-working side?

A

Medial wall of glenoid fossa

24
Q

Laterotrusive rotates while mediotrusive side translates ___________

A

translates forward and opens a bit

25
Q

When restoring a lingual cusp of man 2nd Molar, which movement is most likely to cause interference?

A

Mediotrusive

26
Q

On your articulator, altering horizontal condylar guidance will affect all of the following except?

A

Laterotrusive

27
Q

Patient with a class III crossbite does retrusion. What mandibular teeth will the maxillary lateral incisor contact?

A

Canine & lateral incisor

28
Q

In class II occlusion during protrusive movement, which teeth does the mandibular canine occlude with?

A

Max man canine & 1st PM

29
Q

13 lingual cusp broke, what movement caused it & with what tooth did it break against?

A

MF cusp of #19 in a right lateral non-working side movement

30
Q

Pt’s condyle had ankyloses so can only do the hinge motion, no translation. What is the max opening?

A

30 mm

31
Q

When swallowing, teeth should be in ?

A

ICP

32
Q

Centric relation

A

most repeatable postion

33
Q

Rest position

A

by musculature

34
Q

Space between teeth in the rest postion is ?

A

2-4 mm

35
Q

What is not seen in Posselt’s envelope?

A

Rest position

36
Q

Difference between most anterior point and most inferior ?

A

anterior point = protrusion

most inferior = maximum opening

Packet Info (34 decks)

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