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Prostho > 10. Trial placement > Flashcards

10. Trial placement Flashcards

1
Q

Trial placement: What do we set articulator specifics at? (3)

A
  • PCPI at 45*
  • Bennet Angle at 15*
  • Incisal pin at 0 mm
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2
Q

Trial placement: record bases w/denture teeth? (2)

A
  • Maximal intercuspation at centric relation.

- Record base thickness of no more than 2 mm.

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3
Q

Trial placement: waxed external surface?

A

Sometimes waxing can be postponed

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4
Q

Trial placement: What do we check for? (4)

A
  • retention of record base
  • comfort (no pain/pressure/discomfort)
  • esthetics
  • occlusion
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5
Q

Trial placement: What do we check in the articulator? (5)

A
  • Overjet.
  • Overbite.
  • Centric relation.
  • Maximal intercuspation.
  • Balanced articulation.
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6
Q

Trial placement: stages? (4)

A
  1. Record base assessment
  2. Esthetic assessment
  3. Phonetic assessment
  4. Functonal assessment
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7
Q

Trial placement record base assessment? (4)

A
  • Retention, support and stability.
  • Adequacy of baseplate limits.
  • Border seal.
  • Postdam line
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8
Q

Trial placement record base : Postdam line assessment? (3)

A
  • Groove at the back part of the upper cast of 1-1.5
    mm depth.
  • Thicker border at the back of the denture.
  • Not recommended.
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9
Q

Trial placement: what do we assess esthetically?

A
  • tooth esthetics
  • nasolabial furrow
  • cheek support
  • lip support
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10
Q

Trial placement esthetics: what do we asses for lip support? (3)

A
  • Visible lip vermilion.
  • Not so straight or inwards.
  • Not so protruded.
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11
Q

Trial placement esthetics: what do we asses for the nasolabial furrow?

A
  • Disappears or decreases
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12
Q

Trial placement esthetics: what do we asses for the cheek support?

A

Cheeks don’t collapse inward

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13
Q

Trial placement esthetics: what do we asses for the tooth esthetic? (6)

A
  • 1-2 mm visible when mouth slightly open
  • Symmetrical midline
  • Line of incisal edges is parallel to interpupilary line or upper lip.
  • Shape and size match face.
  • Canines are at ala of the nose.
  • While smiling no “gum” is visible.
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14
Q

Trial placement esthetics: what do we do if it is incorrect? (2)

A
  • rearrange front teeth ourselves

- remove upper front teeth and replace with occlusion rim

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15
Q

Trial placement incorrect esthetics: why/how do we rearrange the front teeth? (3)

A

◦ If size and shape is correct.

◦ Heat wax with a wax knife. ◦ Check directly in patient’s mouth.

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16
Q

Trial placement incorrect esthetics: procedure removing U front teeth and replace with an occlusal rim? (3)

A

◦ Mark midline, smile line and canine lines again

17
Q

Trial placement esthetics: record bases and waxing restore…(2)

A

bone and gingival structure

18
Q

Trial placement esthetics: denture teeth restore….

A

patient’s esthetics according to age, sex, face, etc

19
Q

Trial placement phonetics: what do we need for proper phonetics? adequate.. (4)

A
  • baseplate thickness
  • upper baseplate extension
  • incisor location
  • interocclusal rest space
20
Q

Trial placement phonetics: Baseplate extension is important for which sounds? (3)

A
  • K
  • G
  • A
21
Q

Trial placement phonetics: incisor location is important for which types of sounds?

A
  • bilabial
  • dentolingual
  • dentolabial
22
Q

What is a bilabial sound? (4)

A
  • B
  • M
  • P
  • depends on incisor location
23
Q

What is a dentolingual sound? (6)

A
  • depends on incisor location
  • C
  • D
  • N
  • T
  • Z
24
Q

What is a dentolabial sound? (3)

A
  • depends on incisor location
  • F
  • V
25
Q

Trial placement phonetics: interocclusal rest space is important for which types of sounds? (2)

A
  • S

- M

26
Q

Trial placement functionality: what is assessed? (2)

A
  • VD

- occlusion

27
Q

Trial placement funcionality: how do we assess VD? (4)

A
  • Tire patient’s masticatory muscles for 2 min.
  • Measure interocclusal rest space.
  • Insert trial dentures.
  • Check that interocclusal rest space remains the same.
28
Q

Trial placement funcionality: how do we assess occlusion? (2)

A
  • Check maximal intercuspation with gentle biting force.

- Check balanced articulation in the same way.

29
Q

Trial placement funcionality: What do we do if VD or occlusion are wrong? (3)

A
  • Remove lower posterior teeth.
  • Build an occlusion rim for them.
  • Remake VD adjustment and intermaxillary record

Prostho (17 decks)

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