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D2 Fall - RPD > 9/17: Direct Retainers pt.2 > Flashcards

9/17: Direct Retainers pt.2 Flashcards

1
Q
  1. What are the type of infrabulge clasps?
A

a. T clasps
b. 1⁄2 T-clasps
c. I-bar

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2
Q
  1. What is the most common type of bar clasp?
A

a. Ibar
b. 1⁄2Tbar

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3
Q
  1. What can present the selection of an infrabulge?
A

a. Tissue undercut

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4
Q
  1. You would use what in a class III rpd, short-span class IV
A

a. Tooth-supported

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5
Q
  1. You would use what in a class 1 and 2, long span IV
A

a. Tooth-tissue supported

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6
Q
  1. What are examples of tooth-supported clasps?
A

a. Circumferential
b. Ibar
c. 1⁄2 Tbar
d. Reverse circlet
e. embrasure

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7
Q
  1. What is the most common tooth-supported RPD clasp?
A

a. circumferential

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8
Q
  1. What undercut can you use an I-bar with?
A

MF

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9
Q
  1. What undercut lets you use a 1⁄2 T-bar?
A

DF

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10
Q
  1. You use this clasp when you have a tissue undercut
A

a. Reverse circlet

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11
Q
  1. You use this clasp in a class IV, III, or class II
A

a. Embrasure clasp

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12
Q
  1. This is an imaginary line connecting occlusal rests
A

a. fulcrum

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13
Q
  1. When a tissue undercut is present, you cannot do what? What should you do?
A

a. I or 1⁄2-T, used a reverse circlet (hairpin)

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14
Q
  1. Should the distal abutment retentive clasp be anterior to the terminal rest fulcrum?
A

No

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15
Q
  1. RPI is what type of class lever?
A

Class II

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16
Q
  1. When should you use a RPI?
A

a. MF undercut

17
Q
  1. In a RPI, the approach arm should be what?
A

a. 3mm from the gingiva
b. Crosses gingival margin at 90 degrees

18
Q
  1. What is the most common stress-release clasp used in Class II?
A

RPI

19
Q
  1. What kind of rest do you have on a RPI or RPC?
A

a. Mesial rest

20
Q
  1. What kind of rest do you have on a circumferential clasp?
A

a. Distal rest

21
Q
  1. In a RPI clasp assembly, how much separation do you need between the vertical minor connector?
A

5mm

22
Q
  1. If you don’t have 5mm in RPI, you should do a
A

a. Lingual bar

23
Q
  1. In a RPC or RPA, what should you cast for Kennedy class 1?
A

a. Round

24
Q
  1. This is the approach arm that contacts the 0.01 undercut
A

a. The pod

25
Q
  1. How does the I-bar move?
A

a. Mesiogingivally (downwards and mesially)

26
Q
  1. The best clasp choice for tooth-tissue supported RPDs is what?
A

a. RPI

27
Q
  1. What is the 2nd best choice for a tooth-tissue supported RPD?
A

a. RPC

28
Q
  1. What kind of rest seat should you use on tooth-tissue supported clasps?
A

a. Mesial rests

D2 Fall - RPD (10 decks)

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