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RPD > Direct retainers part 2 quick study > Flashcards

Direct retainers part 2 quick study Flashcards

1
Q

What are the different types of tooth-supported RPD clasps?

A
  • circlet
  • I-bar
  • 1/2 T clasp
  • reverse circlet (hairpin)
  • embrasure
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2
Q

Where is the undercut for a circlet clasp?

A

Remote to edentulous area

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3
Q

Where is the undercut for an I-bar clasp?

A

MF
Mid-facial

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4
Q

Where is the undercut for a 1/2 T clasp on tooth-supported RPD?

A

Adjacent to edentulous

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5
Q

When should you use a circlet clasp?

A

Most Class III RPDs

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6
Q

When should you use an I-bar clasp?

A

Esthetic concern

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7
Q

When should you use a embrasure clasp?

A

Class III no modification space

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8
Q

When can you not use a circlet clasp?

A

Undercut adjacent to edentulous

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9
Q

When can you not use an I-bar clasp?

A
  1. Tissue undercut
  2. Shallow vestibule
  3. Abutment excess facial inclination
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10
Q

When can you not use a 1/2 T clasp on tooth-supported RPD?

A
  1. Tissue undercut
  2. Shallow vestibule
  3. Abutment excess facial inclination
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11
Q

What are the types of distal extension RPD stress-release clasp selections?

A
  • RPI
  • RPC
  • Combination clasp
  • 1/2 T clasp
  • Reverse
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12
Q

Where is the undercut on a RPI?

A

Mesiofacial
Midfacial

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13
Q

Where is the undercut on a RPC?

A

Mesiofacial

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14
Q

Where is the undercut on a combination clasp?

A

Mesiofacial

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15
Q

Where is the undercut on a 1/2 T clasp in tooth-tissue RPD?

A

Adjacent to edentulous

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16
Q

When should you use a RPI?

A

1st choice

17
Q

When should you use a RPC?

A

2nd choice

18
Q

When should you use a combination clasp?

A
  1. Mesial inclination of abutment distal surface
  2. Mesial rest cannot be used
19
Q

When should you use a 1/2 T clasp on a tooth-tissue RPD?

A

Undercut adjacent to edentulous

20
Q

When can you not use a RPI clasp?

A
  1. Tissue undercut
  2. Shallow vestibule
  3. Abutment excess facial inclination
  4. Mesial inclination of abutment distal surface
21
Q

When can you not use a RPC clasp?

A

Mesial inclination of abutment distal surface

22
Q

When can you not use a 1/2 T clasp for a tooth-tissue RPD?

A
  1. Tissue undercut
  2. Shallow vestibule
  3. Abutment excess facial inclination

RPD (16 decks)

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