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BDS3 Prosthodontics - RPD > Occlusion for partially denetate patients > Flashcards

Occlusion for partially denetate patients Flashcards

1
Q

What does this area indicate?

A

premature contact

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2
Q

When do you hand articulate models? (unarticulated casts)

A

quite a good amount of teeth

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3
Q

When do you need to make bite blocks to record occlusion?

A

Kennedy 1 for example… missing lost of teeth

insufficient teeth contact

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4
Q

What does a facebow do?

A

mounting of the maxillary cast on a semi-adjustable articulator

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5
Q

When do you use facebow registarion?

A

If you want to change the whole occlusion of the pt

e.g. pt with tooth ware
e.g. multiple bridges

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6
Q

What can a facebow tell you with regards to RPD?

A

Path of insertion

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7
Q

What does this image show?

A

facebow

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8
Q

Facebow vs articulator?

A

facebow: the angle/relationship the maxilla (teeth) sit in relation to the TMJ/condyle. In the terminal hinge axis position

articulator: info from the facebow can be translated to the articulator. it imitates jaw movements - can create dentures form this

If you want to change/improve occlusion, both of these methods are key

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9
Q

What is the recommended occlusion for RPD?

A

MAINTAIN NATURAL OCCLUSION

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10
Q

satisfactory of unsatisfactory occlusion?

A

unsatisfactory

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11
Q

What are exceptions for RPD to not keep the natural occlusion?

A
  1. partial denture oppose a complete denture
  2. only anterior natural teeth remain in a kennedy class 1 type dentition
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12
Q

How would you carry out jaw registration and teeth setup for…

  1. partial denture oppose a complete denture
  2. only anterior natural teeth remain in a kennedy class 1 type dentition
A

proceed in the same manner as in the case of a complete denture

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13
Q

What are steps in establishing satisfactory occlusion for RPD?

A
  • Analysis of existing occlusion
  • correction of existing occlusal disharmony
  • recording of ICP or RCP as appropriate
  • Try in of the teeth set up and harmonising occlusion
  • correction of occlusion discrepancies on the finished RPD
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14
Q

Would you record ICP or RCP for an RPD against a full denture?

A

RCP

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15
Q

For a RPD, when do you measure RCP instead of ICP?

A

Image on right, Kennedy 1 with no posterior contacts

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16
Q

What happens to unopposed teeth?

A

over eruption

17
Q

How do you correct over erupted teeth due to them being unopposed?

A

provide patient with a crown to reduce the height of the tooth

May even have to remove teeth

18
Q

What are the effects of over erupted teeth?

A

occlusal plane discrepancy

mandible move upwards and backwards and over close

insufficient restorative space

loss of occlusal vertical dimension (OVD)

19
Q

Can you give a provisional acrylic RPD to a patient to re-establish OVD?

A

YES, see if they are coping well with it

20
Q

What is the recommend occlusion for RPD?

A

occlusion for the tooth supported RPD should be arranged such that natural tooth contacts are maintained when the denture is inserted in the mouth

21
Q

When do you need to record dynamic positions?

A

bilateral balanced occlusion in dynamic positions should be provided when a RPD oppose a complete denture

contribute to stability of complete denture

22
Q

What Kennedy classifications do you record working side contacts?

A

mandibular kennedy 1 and 2

maxillary kennedy 2

23
Q

Why must maxillary kennedy class 1 be balanced?

A

such an occlusal scheme will compensate for the buccal placement of the teeth on the denture, in relation to the ridge crest and offer stability

24
Q

What is desirable in Kennedy class 4?

A

opposing anterior teeth contact in ICP is desirable to prevent over eruption of the opposing anterior natural teeth

25
Q
A

B

26
Q

What would you never sit a posterior prosthetic tooth over?

A

the ridge slope (retromolar pad)

27
Q

If you place a 7 over the retromolar pad, what could this cause?

A

may cause movement of the denture anteriorly

28
Q

Do you restore toothware before the construction of RPD?

A

Yes - needed for space for denture

BDS3 Prosthodontics - RPD (23 decks)

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