Prostho II > RPDs > Flashcards

RPDs Flashcards

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1
Q

What is a removable partial denture?

A

Replaces some teeth in a partially dentate arch

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2
Q

What is another name for a removable partial denture?

A

Partial removable dental prosthesis

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3
Q

What sometimes implies the need for treatment with RPD?

A
  • tooth loss

- subsequent alveolar bone loss

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4
Q

What is the final aim of and RPD?

A

functional and esthetic rehabilitation

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5
Q

The fewer teeth that are missing, the more suitable a ______ denture is

A

fixed partial

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6
Q

The more teeth that are missing, the more suitable a ____ is

A

RPD

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7
Q

Besides number of teeth missing, these must be considered for an RPD… (5)

A
  • Bone loss (residual ridge volume)
  • Location of remaining teeth
  • Condition of remaining teeth
  • length of edentulous areas
  • intermaxillary relationship
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8
Q

RPD classifications? (3)

A
  • Tooth supported
  • Tissue supported
  • Tooth and tissue supported
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9
Q

Tooth supported denture: support and retention is where?

A

lays over teeth

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10
Q

Tooth supported denture: edentulous areas?

A

bounded

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11
Q

Tooth supported denture: Kennedys class?

A

III & IV

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12
Q

Tooth supported denture: better alternative?

A

fixed partial denture

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13
Q

Tooth supported denture: indications? (2)

A
  • long edentulous areas
  • periodontially damaged teeth
  • if da patient POOR
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14
Q

Tissue supported dentures: support?

A

soft tissues

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15
Q

Tissue supported dentures: designed with? (3)

A
  • large major connectors
  • wrought wire clasps
  • extended bases
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16
Q

Tissue supported dentures: more frequently on mandible or maxilla?

A

mandible

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17
Q

Tissue supported dentures: indications? (2)

A
  • few remaining teeth

- periodontically damaged

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18
Q

Tissue supported dentures: Ideal abutment teeth? (2)

A
  • 4 symmetrical

- canines and 2nd molars

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19
Q

Tissue supported dentures: Other favorable abutment teeth arrangements? why? (2)

A
  • 2 symmetrical abutment teeth (ex. 2 canines or 2 premolars)
  • allows extended bases in front and behind abutment teeth
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20
Q

Tissue supported dentures: Which teeth do not make sense preserving?

A

-incisors or 3rd molars

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21
Q

Tooth and tissue supported denture: Kennedys class?

A

I-!V

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22
Q

What si the most frequent type of RPD?

A

tooth and tissue supported denture

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23
Q

What is the most complex type of RPD?

A

tooth and tissue supported denture

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24
Q

Tooth and tissue supported denture: No possibility of placing a FPD occurs in which kennedys class? (2)

A

I & II

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25
Tooth and tissue supported denture: Kennedys class III design and teeth? (2)
- Designed determined by quality of abutment teeth and length of edentulous area - at weak teeth : no occlusal rest
26
Tooth and tissue supported denture: Kennedys class IV with three incisors missing?
better to make FPD
27
Tooth and tissue supported denture: KEnnedys class IV with 4 incisors missing OR 3 incisors and a canine?
better to make FPD
28
Tooth and tissue supported denture: KEnnedys class IV 4 incisors and a canine missing
better to make a RPD
29
RPDs restore/ preserve... (4)
- esthetics - phonetics - proximal contact points (only preserve) - VD
30
RPDs improve...
masticatory efficiency
31
RPDs prevent... (3)
- migration - rotation - extrusion
32
RPDs bear...
adequate forces tot he supporting tissues to preserve them
33
What is a major connector for an RPD?
part of the RPD that joins components on opposite sides of the arch
34
Components major connectors: rigidity?
rigid and doesn't bend through mastication
35
If a components major connector is more than 6mm wide it is considered...
a plate
36
If a components major connector is less than 6mm wide it is considered...
a bar
37
Types of maxillary major connectors? (8)
- palatal plate - middle palatal plate (palatal strap) - middle posterior palatal plate - Complete palatal plate (complete palatal coverage) - U-shaped or anterior palatal plate - antero-posterior palatal palte - antero-posterior palatal bar - posterior palatal bar
38
Types of mandible major connectors? (2)
- lingual bar | - double lingual bar (or lingual bar with continuous bar indirect retainer)
39
Major connector materials ? (3)
- metal (usally Co-Cr alloy) - acrylic resin - both
40
What is a minor connector?
connects the major connector /base of RPD and other units (ex. clasp assembly, indirect retainers, occlusal rests, cingulum rests, proximal plates)
41
What is the function of a minor connector?
distribute functional load, mainly from major connector to abutment teeth
42
What is a proximal plate?
-match guiding planes prepared over abutment teeth
43
Function of proximal plates? (4)
- limit and guide the insertion and removal of the denture - improve stability - reciprocation - reduce embrasures
44
What is an occlusal rest?
- rigid extension of a RPD | - contacts occlusal surface of tooth/restoration, occlusal surface of which may have been prepared to recieve it
45
What is an incisal rest?
- rigid extension of RPD that contacts a tooth at the incisal edge
46
Incisal rest and vertical forces?
neutralize vertical forces that tend to embed the denture over supproting tissues
47
Incisal rest and horizontal forces?
They oppose horizontal forces
48
What is a direct retainer? (2)
- Used to retain and prevent dislodgement | - consists of a clasp assembly or precision attachment
49
Types of retainers? (2)
Direct | indirect
50
Types of direct retainers? (2)
- Clasp assemblies | - Friction retainers (attachments)
51
Types of direct retainer with clasp assemblies? (2)
- Cast retainer | - Wrought wire retainers
52
Types of direct retainer with clasp assemblies with cast retainers? (2)
- Circumferential retainers | - Bar or contact point retainers
53
Types of (Direct) circumferential retainers?(10)
- Akers or ney's n.1 - REverse akers clasp - ring - double akers (bonwill) - C clas/hair-pin - Buch & Carmona - Single-continuous arm clasp - Nally-martinet - Posterior action - Multiple clasp
54
Types of (Direct) bar or contact point retainers? (3)
- Roach ( I, T, Y) - RPI - RPA
55
Circumferential retainers consist of? (4)
- Occlusal rest - Body - Reciprocal arm - Retentive arm
56
The retentive arm is composed of? (2)
- Rigid part above the survey line | - flexible part below survey line
57
What is an indirect retainer?
Assists the direct retainer in preventing displacement of the distal extension of denture base
58
How does a indirect retainer function?
Through levelr action on the opposite side of the fulcrum line when the denture base moves away from the tissues in pure rotation about the fulcrum line
59
Indirect retainers used in what type of denture?
tooth and tissue supported
60
Indirect retainers prevent...?
The posterior part of the denture from dislodging
61
Indirect retainers stability?
Horizontal and vertical
62
Indirect retainer types? (3)
- Occlusal rest - Incisal rest - Continuous lingual arm
63
What is a base? (2)
- Supports the artificial teeth | - rests on the foundation tissues and replaces the alveolar structures and gingival tissues
64
Base extension depends on?
Kind of support of the denture
65
Base can be made of? (3)
- Metal - Acrylic resin - Acrylic resin with metallic mesh framework
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