Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

BDS2 CDS Prosthodontics Removable > RPD - Design and Construction > Flashcards

RPD - Design and Construction Flashcards

(49 cards)

Start Studying
1
Q

articulator

A

a hinged instrument to which the maxillary and mandibular casts are attached and which reproduces recorded relationships of the mandible to the maxilla
- assist the study of occlusion and the formation of the occlusal surfaces of prostheses and restorations

different types

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

surveyor

A

instrument used to survey casts
- may also be used to prepare parallel surfaces on restorations

drive the design for partial denttures
OSCE station

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

6 reasons why patients can have missing teeth

A
  • caries (tooth decay
  • periodontal disease (gum disease)
  • endodontic infection
  • trauma
  • cancer
  • congenitally absent (hypodontia)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

4 consequences of missing teeth

A
  • anatomical
  • aesthetic
  • functional
  • psychological
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the extra oral anatomical consequences of missing teeth?

A

change in facial appearance

  • maxilla shrinks backwards
  • mandible goes forwards
  • exaggerate class 3

TMJ problems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the intra oral anatomical consequences of missing teeth?

A
  • alveolar resorption
  • tooth movement
  • tooth wear
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is a term used for unwanted tooth movement due to missing teeth?

A

drifting

tiliting

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

how can aesthetics be effected by missing teeth?

A

loss of hard and soft tissue which support the face

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how can function be effected by missing teeth?

A

mastication

speech

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the most difficult thing for dentists to manage in regards to patients missing teeth?

A

the psychological effect

  • mental health
  • effect quality of life
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

7 ways we can replace missing teeth

A
  • Resin bonded bridgework
  • Conventional bridgework
  • Implant crowns
  • Implant bridgework
  • Removable partial dentures
  • Complete dentures
  • Implant retained dentures
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

describe resin bonded bridgework

A

mesial cantilever is the most successful (abutment teeth on both sides of pontic)

fixed-fixed

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

descrive conventional bridgework

A

cantilever

fixed-fixed

need to do a lot of preparation
- more destructive
retainers usually metal ceramic crowns

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

what is the preferred method of placing an implant crown?

A

with a screw rather than cement

- can remove easier if something goes wrong

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

what is implant bridgework?

A

similar to conventional bridgework apart from use implant screws on abutments rather than retainer clasps

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

removable complete denture

A

conventional denture

  • no attachments for stability
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

implant retained complete denture

A

abutments are attached to implants to be attached

- ‘snaps in place’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

implant supported complete denture

A

screw retained and removable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what does ‘saddle’ mean?

A

area with no teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

bi-lateral free-end saddle

Study These Flashcards
A

anterior teeth only, no posterior teeth on either side

21
Q

uni lateral free-end saddle

Study These Flashcards
A

anterior teeth and one side of posterior teeth present

22
Q

bounded saddle

Study These Flashcards
A

gap in running row of teeth

e.g. between canine and molar (missing premolars); between canines

23
Q

do we replaces all missing teeth?

Study These Flashcards
A

no

depends on ones missing (need 20 teeth according to WHO)

24
Q

shortened dental arch

Study These Flashcards
A

A dentition where most posterior teeth are missing
- Satisfactory oral function without use of RPD

Priority given to maintaining an anterior and premolar dentition in one or both jaws
- In the right circumstances, non-replacement of posterior missing teeth can provide a stable and acceptable dentition

25
3 ways to extend the shortened dental arch
bridgework implants RPD
26
what are the 3 classes of support a removable partial denture can have?
- tooth borne - mucosa borne - tooth and mucosa borne
27
what is tooth borne support?
everything rests on teeth (no free end saddle) desirable
28
what is mucosa borne support?
everything rests on mucosa
29
what is tooth and mucosa borne support?
mixture of retainers on teeth and RPD resting on mucosa
30
what type of material (base) can you get for an RPD?
- acrylic | - cobalt chrome
31
what are the 5 stages in patient assessment?
- history - examination - special investigations - diagnosis - treatment plan
32
what do you need to get when taking patient's history for RPD?
Full denture history - Why were teeth lost? How long have they worn dentures for? How many dentures have they had? Have they got a favourite denture? Previous denture causing problems? Have they got a preferred design? Which do they prefer -metal or acrylic resin denture?Periodontal disease? (Means ridges going to change) Medical history - particularly identify problems which could affect treatment; Arthritis, Neuromuscular, Mucosal disease, Xerostomia (denture may not stay inn well, uncomfy), Osteoporosis/bisphosphonates Social history - esp hobbies - wind instruments
33
extra oral points to look for in the RPD patient examination
- Lower facial height - Too short dentures would mean lower facial height reduced - Nasio-labial angle - Limited Opening - Any abnormalities - Smile line - Aesthetics of existing dentures
34
intra oral points to look for in the RPD patient examination
General Examination - Periodontal status - Endodontic status - Caries - Tooth wear - Indirect restorations Edentulous spaces - Number - Position - Length - Ridge form - Displaceable tissue Occlusion - Occlusal vertical Dimension - Occlusal contacts - Freeway Space
35
kennedy class I
bilateral free end saddle | e.g. only 4 to 4 present
36
kennedy class II
unilateral free end saddle | missing one side of posteriors
37
kennedy class III
uni lateral bounded saddle | missing some posterior teeth on one side but have the 7 or 8
38
kennedy class IV
anterior bounded saddle | missing incisors
39
craddock class I
Saddles supported on both sides by substantial abutments All tooth borne
40
craddock class II
Vertical biting forces resisted entirely by soft tissues All mucosa borne
41
craddock class III
Tooth supported at only one end of the saddle Tooth and mucosa borne
42
9 points to look at in denture examination
- Support -The resistance to vertical movement of the denture towards the tissue (too supported teeth resist movement) - Retention - The resistance to displacement of the denture away from the tissue - Stability -The resistance to horizontal (lateral) movement of the denture (Is occlusion meeting directly) - Aesthetics - Primary for patients - Extension - How far denture base extends - Occlusion -bite - Material - Design - Condition of teeth and base- How long in at a time and age of denture – assess teeth wear, fractures of denture
43
what is denture support?
The resistance to vertical movement of the denture towards the tissue Too supported teeth resist movement
44
what is denture retention?
The resistance to displacement of the denture away from the tissue
45
denture stomatitis
mixed bacteria and yeast infection can occur if wear denture overnight asymptotic infection if mild - can cause chest infection
46
abutments teeth requirements
- structurally sound, with satisfactory appearance (Really strong teeth either side to make bridge, Need to pick best condition teeth as additional forces on them) - in good alignment and position - any previous restorations and endodontic treatments are satisfactory - tooth roots and supporting alveolar bone are adequate (You don’t want to use teeth with bone loss. No RCT, need good bone support) - soft tissue of the edentulous ridge is satisfactory in quantity and quality
47
what special investigations need to be undertaken for abutment teeth? (4)
- Periapical radiographs - Sensibility testing – blood and nerve supply (EPT, Ethyl chloride) - Surveyed study models - Clinical photographs
48
what is denture over extensions
too much material
49
what is under extension of denture
palate or flanges are too shallow which causes air to undermine the denture, therefore, it drops or has excessive movement. Under extension can also cause a gagging sensation.

BDS2 CDS Prosthodontics Removable (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions