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Occlusion > Lecture 6_ Inserting the guard > Flashcards

Lecture 6_ Inserting the guard Flashcards

1
Q

Why do we use occlusal devices?

A

It may be used for occlusal stabilization, for treatment of temporomandibular disorders, or to prevent wear of the dentition

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2
Q

T/F
an occlusal device can be used to rule out certain etiologic factors
Helps identify CAUSE-and-EFFECT relationships

A

TRUE

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3
Q

can you treat irreversible TMD with an occlusal guard?

A

NO, just for reversible

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4
Q

can you use an occlusal device to establish and OVD?

A

yes

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5
Q

how effective are occlusal devices in reducing TMD symptoms?

A

70-90%

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6
Q

T/F
Recent studies indicate that a palatal splint, without occlusal coverage is as effective as a full occlusal coverage occlusal device

A

True

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7
Q

T/F

Occlusal splints unload the joint?

A

FALSE

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8
Q

what does increasing the OVD do?

A

rotates the condyles down while they are STILL LOADED

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9
Q

what are the indications for an anterior positioning device?

A

treat disc displacements and disc dislocations with reduction.

irrgular or chronic locking of the joint

retrodiscicitis

reciprocal click

single click

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10
Q

goal of anterior positioning device?

A

The goal of treatment is not to alter the mandibular position permanently but only to change the position temporarily so as to enhance adaptation of the retrodiscal tissues.

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11
Q

is it appropriate to use orthortic device?

A

no. ..

* *more for bracing a limb

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12
Q

what is the most appropriate name for an occlusal device?

A

orthosis** best**

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13
Q

This type of splint allows the muscles to move the condyles into centric relation without interference from any tooth inclines?

A

permissive splint

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14
Q

describe directive splint?

A

directs the mandible into a predetermined relationship, directing the condyles into pre determined position

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15
Q

when can we use splint to describe occlusal device?

A

if we are splinting mobile maxillary teeth together for instance

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16
Q

can you use “appliance”

A

DON’T…

call it a device or a prosthesis

17
Q

where do yo want the condyles to rest with the occlusal guard?

A

most superoanterior position against the posterior slopes of the articular eminence

18
Q

Do you want treatment to be reversible or irreversible?

A

REVERSIBLE!!!! no harm done….

you want to temporarily alter the occlusal condition, but when its removed it returns to the pre-existing condition

19
Q

can you use occlusal device to splint?

A

yes

20
Q

Can you make the guard to the length of the future OVD??

A

YES!!! test the fricatives after you do so!

21
Q

benefits of maxillary device vs. mandibular?

A

-More retentive
-Stronger
-More versatile (can use for class II and III patients)
0-Increased stability

22
Q

benefits of mandibular device?

A
  • easier to speak
  • more aesthetic
  • cannot use anterior stop to find CR

DON’T DO THIS THOUGH!!!! Cannot use anterior stop to find CR!

-May cause tongue repression..therefore you end up protruding

23
Q

effectiveness of reducing symptoms?

A

70-90 %

24
Q

is the reduction in muscle activity due to change in OVD?

A

no

Like when you hold you masters together and put finger in the middle that’s why

25
Q

is it possible to unload the joint with an occlusal device?

A

no

26
Q

T/F

increasing the OVD takes all the loading forces off the TMJS and puts the load on the teeth?

A

no

the joint rotates in all dimensions whether protruded or retruded…can’t take the load off the joints

27
Q

What does increasing OVD do to the condyles?

A

it simply ROTATES them while still LOADED

DOES not distract them down

28
Q

how thick should the guard be on the lingual?

A

make it only 1 mm thick

You should make it 3 mm from the gingival line. You can make it right to the gingival line or just to the occlusal

29
Q

what muscles does the retracted tongue aggrevate?

A

lateral pterygoids which will push the jaw forward

30
Q

if you make a mandibular guard, can there be resin on the lingual?

A

NO because can affect the tongue

They don’t splint the maxillary teeth

NOT better for you though because of the force vectors

31
Q

contraindications for mandibular occlusal

A

-severe retrognathia
-tipped lingually
mobile max teeth
anterior open bite
OSAS
-endlarged tongue

32
Q

what is the strength of the device dependent upon?

A

VERTICAL thickness not the palatal width

must be able to accurately record the vertical thickness for the record

33
Q

T/F

anterior teeth should occlude on a very small flat shelf and the disocclusion should be immediate and gradual?

A

true

34
Q

T/F

Anterior teeth should hold, posterior teeth should drag?

A

false…opposite

35
Q

drawbacks to using a soft material?

A

precision of the contacts is difficult

36
Q

what can you use soft guards for?

A

athletic guards
clenching or bruxism
chronic sinusitis

37
Q

should you use an anterior deprogramming device or pivotal?

A

no

teeth around will super erupt and you can cause malocclusion

Occlusion (10 decks)

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