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RPD > Week 2 > Flashcards

Week 2 Flashcards

1
Q

List 5 types of maxillary major connectors.

A 
Anterior-posterior palatal strap
Single palatal strap
Modified full palatal
Complete palatal coverage
U-shaped/Horseshoe
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2
Q

List 3 types of mandibular major connectors

A

Lingual bar
Lingual plate
Labial bar (swinglock)

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3
Q

Name the Kennedy classification and the major connector that you might choose for the following situation:

Missing 3, 4, 12, 13
No torus palatinus
Perio fine

A

Class III, mod 1

Palatal Strap

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4
Q

Name the Kennedy classification and the major connector that you might choose for the following situation:

Remaining teeth 6-11.
No torus palatinus
Posterior ridges fairly resorbed

A

Class I

Full palatal coverage

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5
Q

Name the Kennedy classification and the major connector that you might choose for the following situation:

Remaining teeth 4-13
Midpalatal torus palatinus
Perio good
Ridge support good

A

Class I

Horseshoe or AP palatal strap

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6
Q

Name the Kennedy classification and the major connector that you might choose for the following situation:

Missing teeth 6-10
Torus palatinus present
Perio good

A

Class IV

Horseshoe or AP palatal strap

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7
Q

Name the Kennedy classification and the major connector that you might choose for the following situation:

Remaining teeth 20-28
Depth of floor of mouth = 8 mm
Perio good
No tori

A

Class I

Lingual bar

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8
Q

Name the Kennedy classification and the major connector that you might choose for the following situation:

Remaining teeth are 22-26
Depth of floor of mouth = 6mm
Teeth 24 and 25 exhibit approximately 30% bone loss radiographically

A

Class I

Lingual plate or swinglock

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9
Q

Which mandibular major connector is the most comfortable for patients?

A

Lingual bar

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10
Q

Which maxillary major connector is the most rigid for the amount of tissue covered?

A

AP palatal strap

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11
Q

Which maxillary major connector is the least desirable due to the amount of flexure inherent to the design?

A

Horseshoe

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12
Q

In general, ______________ are the clasp of choice for tooth born (supported by teeth on both sides of the edentulous space) removable partial denture.)

A

cast circumferential clasps

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13
Q

A lingual bar needs how much space from the FGM to the floor of the mouth?

A

7 mm

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14
Q

In general, ___________________ is preferred for replacement of posterior teeth unless there is limited interocclusal space.

A

open lattice denture base retention

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15
Q

Where are horizontal struts placed?

A

between teeth, ideally

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16
Q

Proximal plates have the same width as _____________..

A

occlusal rests

17
Q

What is the width of proximal plates/occlusal rests?

A

1/2 the width of the occlusal table or 1/3 of the total tooth width

18
Q

Where is the inferior border of the reciprocal arm positioned?

A

at the height of contour

19
Q

_____________ engages an abutment tooth to resist displacement of the RPD away from the tissues.

A

Direct retainer

20
Q

What is an advantage of the key and keyway retainer?

A

esthetics

21
Q

Disadvantages of intracoronal retainers? (5)

A 
requires castings
complicated clinical/lab
difficult to repair
additional expense
may require splinting of several teeth
22
Q

4 parts of the basic clasp type retainer

A

Rest
Retentive arm
Reciprocating arm (or alternative reciprocation)
Guiding plate

23
Q

Clasp of choice for Kennedy Class III?

A

Cast circumferential clasp (because of its excellent support, bracing, and retentive properties.

24
Q

Type of clasp indicated for Kennedy Class II or III RPDs with no modification spaces?

A

Embrasure clasp

25
Q

Six requirements for every direct retainer or clasps assembly

A 
Support
Stabilization
Retention
Adequate encirclement
Reciprocity
Passivity
26
Q

Adequate encirclement = greater than ________ degrees

A

180

27
Q

Describe open lattice denture base retention.

A

Two longitudinal struts extending along edentulous ridge one strut buccal and one strut lingual to crest of ridge.

28
Q

What type of denture base retention is used when space is an issue?

A

Mesh

29
Q

Which retains acrylic better - open lattice or mesh?

A

Open lattice

30
Q

_____________: cast so fit on risge; no acrylic is packed underneath; retention is gained by metal projections on the metal surface

A

Bead, wire or nailhead

31
Q

Butt acrylic teeth not indicated for Kennedy Class ______

A

I or II

32
Q

External finish lines should be _______, definite, and slightly ________ to adhere to resin; angle of finish line with major connector should be less than _____ degrees.

A

sharp
undercut
90

33
Q

Contour teeth using hand instruments on casts so that the height of contour is in the ___________ third.

A

middle

RPD (2 decks)

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