Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

RPD > Stewarts > Flashcards

Stewarts Flashcards

1
Q

Six requirements of direct retainers (clasp assemblies)

A
  1. Support
  2. Retention
  3. Stability
  4. Reciprocation
  5. Encirclement
  6. Passivity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Three factors affecting the magnitude of retention of clasp arms

A
  1. Angle of convergence
  2. Placement of clasp into angle of convergence
  3. Flexibility of clasp arm
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Six factors of clasp flexibility

A
  1. Length
  2. Cross-sectional form
  3. Longitudinal taper
  4. Cross-sectional diameter
  5. Clasp curvature
  6. Alloy characteristics
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Four factors of indirect retainer effectiveness

A
  1. Distance from fulcrum line
  2. Status of abutment tooth
  3. Full seating
  4. Rigidity of minor connector
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Altered cast purpose (3)

A
  1. Improve adaptation of denture base to the ridge
  2. Equalize stress between ridge and abutments
  3. Capture periphery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Why is altered cast not necessary for maxillary arch?

A

The palate contacts with the major connector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Two potential issues with altered cast

A
  1. Not fully seating RPD

2. Newly poured stone onto teeth surfaces preventing articulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Applegate’s modifications 1-4

A
  1. Classification made after extractions
  2. If third molar is missing and not to be replaced, it is not included in classification
  3. If third molar is part of restoration, it is considered
  4. If second molar is missing and not to be replaced, it is not included in classification
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Applegate’s modifications 5-8

A
  1. Most posterior edentulous region determines classification
  2. Edentulous regions other than most posterior are deemed modifications
  3. Extent of modification is not considered, just number
  4. Class IV’s cannot have a ny modifications
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

For an RPD, how much in mm can teeth and soft tissue be displaced?

A

Teeth: 0.2 mm

Soft tissue: 1.0 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Major connector requirements (5)

A
  1. Rigidity
  2. Protect soft tissues
  3. Provide a means for indirect retainers
  4. Provide a means for denture bases
  5. Promote patient comfort
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why is amalgam not preferred for rest seats?

A
  1. Unfavorable flow and poor tensile characteristics

2. Replacement of defective restoration under RPD is difficult

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Define angle of cervical convergence

A

Angle created by the analyzing rod and tooth surface apical to the height of contour

The greater the angle, the greater the force to remove a clasp from the abutment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What two strategies to utilize if severe angle of convergence?

A
  1. Engage only 0.1 undercut instead of 0.2

2. Recontour tooth surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Purpose of rest seats (2)

A
  1. Resist displacement / movement of RPD

2. Direct forces down long axis of abutment tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Who introduced the cast circumferential clasp?
Wrought wire circumferential clasp?
I-bar?

A
  1. Nesbitt in 1916
  2. Applegate in 1965
  3. Krol
17
Q

What are the three fulcrums in RPD?

A
  1. Vertical - From rest to rest of abutment teeth (movement in sagittal)
  2. Sagittal - Rest seats through crest (movement in frontal plane - two in a KC 1 red)
  3. Horizontal - Fulcrum is near midline - Most dangerous (horizontal plane)
18
Q

RPI - having the rest of the mesial leads to what kind of lever system whenever there is occlusal load on a distal extension?

A

Class II level system

19
Q

Beyron’s point

A

13 mm anterior to the tragus on a line from the tragus to the cantus of the eye

20
Q

What third reference point does the Hanau springbow utilize?

A

Infraorbital notch

21
Q

How long to keep Iowa or Korecta wax intramurally for fluid wax technique?

A

5-7 minutes

22
Q

If tissue contact during fluid wax technique, will wax be shiny or dull?

A

If contact with tissue - shiny

If no contact, wax is dull

23
Q

Hanau’s formula?

What is it for?

A

L = H/8 + 12

Set lateral condyle setting from protrusive record

24
Q

Five factors of Hanau’s quint

A
  1. Condylar guidance
  2. Incisal guidance
  3. Occlusal plane
  4. Compensating curve
  5. Height of cusps
25
Q

Composition of tissue conditions? (powder and liquid)

A

Powder - Polyethylmethacrylate

Liquid - Ethyl alcohol and ester

26
Q

Clinical impact of arcon vs nonarcon

A

When you increase the OVD, non-arcon will not maintain the relationship between the occlusal plane and horizontal condylar guidance

RPD (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions