Brainscape's Knowledge GenomeTM

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


See full index

5th yr- Finals- CSB revision > Talking the talk partial denture > Flashcards

Talking the talk partial denture Flashcards

1
Q

Define support in terms of dentures

A

Support is resistant to vertical forces directed towards the mucosa

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

Give examples of structures in the mouth that can support a denture

A
  1. Tooth
  2. Mucosa
  3. Tooth and mucosa
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What do we call a denture supported by teeth?

A

Tooth borne

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

What do we call a denture supported by mucosa?

A

Mucosa borne

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

What do we call a denture supported by tooth and mucosa?

A

Tooth and mucosa borne

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

How can tooth support for dentures be achieved?

A

1, Adding occlusal rests
2. Adding cingulum rests
3. Adding incised rests and onlays

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

Name some mucosal borne dentures

A
  1. Every denture
  2. Spoon denture
  3. Transitional/colleted denture (gum stripper)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a major disadvantage of transitional dentures?

A

They can trap plaque underneath the denture against the adjacent teeth

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

Define saddle

A

An edentulous region on the alveolar ridge

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

Give examples of some different type of sadder

A
  1. Bounded saddle
  2. Free end saddle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Define bounded saddle

A

A saddle which has a tooth at each end

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Define free end saddle

A

An edentulous area with teeth at one end

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

Define retention

A

It is the resistance to a vertical force directed away from the mucosa

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

How can retention be gained on a denture

A

By the use of clasps

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

How do claps work

A

They ‘engage undercut’ to gain retention

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

What can cause a denture to be loose?

A
  1. Lacks support
  2. Lacks retention
  3. Lacks resistance to lateral movement
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Name the different types of clasps1

A
  1. Retentive clasp
  2. Reciprocated clasp
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How does a retentive claps work?

A

As the denture moves up, the claps is forced to expand
The resistance to the claps to expansionists holds the denture in place

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

What is an under cut

A

The area below the surgery line on a Tooth

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

What is the survey line on a tooth?

A

The line of maximum bulbosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which direction can clasps approach the undercut from?

A

Can approach:
1. Gingivally
2. Occlusally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is bracing in terms of dentures

A

Bracing is resistance to a horizontal force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Define reciprocation

A

It is the resistance to the specific horizontal forces generated by retentive clasps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Give an example of reciprocation

A

A bracing element which is in contact with the side of the tooth opposite the retentive clasps

25
Q

What must retentive clasps always be to make a denture successful?

A

Must ALWAYS be reciprocated

26
Q

Where is the reciprocated clasps found on a tooth?

A

On the side opposite to the retentive clasp

27
Q

What is indirect retention

A

Resistance to rotational displacement in a tooth and mucosal borne denture

28
Q

What is rotational displacement and what can it lead to

A

When a denture rotates around the claps usually due to sticky food pulling the denture away from the mucosa
Can lead to the denture becoming loose

29
Q

How is indirect retention usually achieved?

A

By placing a rest on a tooth anterior to the clasp

30
Q

What is a sulcus

A

A space that has been produced between tongue/lips/cheeks and the residual alveolar ridge

31
Q

What does the functional depth of sulcus describe

A

What does the functional depth of sulcus The minimum depth of the sulcus when the muscles are contracting

32
Q

Define flanges

A

Parts of the denture which extend into the sulcus

33
Q

Where should flanges extend to?

A

Normally extend to the functional depth of the sulcus

34
Q

What is it called when flanges extend beyond the functional depth of the sulcus

A

they are over extended

35
Q

What are the problems associated with over extended flanges

A

They can cause the denture to be unstable in function

36
Q

What are the problems associated with under extended flanges

A

They may lead to loss of suction under the denture (so loss of retention)

37
Q

What is occlusion

A

Occlusion is the precise way in who teeth in the upper arch meet the teeth in the lower arch

38
Q

What is denture occlusal instabilty

A

When teeth meet incorrectly making the denture unstable

39
Q

What is denture occlusal instability usually due to

A

A premature contact point

40
Q

Name some components of a partial denture

A
  1. Occlusal rests
  2. Cingulum rest
  3. Clasps
  4. RPI clasping system
  5. Connectors
41
Q

Where are occlusal rests found

A

They extend unto 1/3rd across the occlusal surface of the tooth
they are usually directly down the long axis of the tooth

42
Q

What is the purpose of an occlusal rest

A
  1. Give support to denture
  2. Keeps clasps in the correct position
43
Q

What can happen if a cingulum rest isnt postponed correctly

A

It can start acting like an orthodontic applicant and move the tooth

44
Q

What is the problem with using cobalt chrome to make partial dentures

A

It is quite stiff and inflexible

45
Q

How much horizontal depth of undercut do we need to engage for a cobalt chrome denture?

A

0.25mm

46
Q

How big do clasps on dentures need to be

A

15mm long

47
Q

What can happen if a clasp is stretched beyond it

A

The clasp will break
or
still away form the tooth not providing retention

48
Q

What are guide planes

A

They are flat surfaces cut into enamel of teeth which are parallel to the path of insertion of a denture

49
Q

How can guide planes be created

A
  1. Cutting enamel
  2. By adding composite to the tooth surface
50
Q

What does the RPI system stand for

A

(mesial) Rest
(distal guide) Plane
I bar

51
Q

When is the RPI clasping system used AND Why

A

Designed for lower free end saddles as it gives good support retention and reciprocation

52
Q

What are connectors

A

Rigid components of a denture which hold all other component together

53
Q

Name the 2 types of connectors

A

Major and minor

54
Q

What are major connectors

A

They usually connect from left and right sides of a dentures

55
Q

What are minor connectors

A

A branch from the major connector to the various components eg clasps, occlusal rests, saddles

56
Q

What is a Kennedy class I denture

A

A bilateral free end saddle

57
Q

What is a Kennedy class II dentue

A

A unilateral free end saddle

58
Q

What is a Kennedy class III denture

A

A bounded saddle denture

5th yr- Finals- CSB revision (17 decks)

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