Brainscape's Knowledge GenomeTM

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


See full index

Fixed Prosthodontics > Open Questions > Flashcards

Open Questions Flashcards

1
Q

What are the advantages of Alginate? (3)

A 
cheap
setting time can be controlled
hydrophilic
easy
non-toxic
good surface detail
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the disadvantages of Alginate? (3)

A

unstable
setting time depends on operator
poor R tear

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

What are the advantages of Polyethers?

A

hydrophilic
accurate
thixotropic behavior
easy

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

What are the disadvantages of Polyethers?

A

allergies
fast setting
poor R tear

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

What are the advantages of Polysulphides?

A

accurate
cheap
long expiration

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

What are the disadvantages of Polysulphides?

A

hydrophobic
smell unpleasant
non esthetic

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

What are the advantages of Silicon C?

A

cheap
easy
good tear strength

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

What are the disadvantages of Silicon C?

A

hydrophobic
low dimensional stability
less accurate

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

What are the advantages of Silicon A?

A 
acceptable taste
fast
easy to use
accurate
thixotropic behavior
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the disadvantages of Silicon A?

A 
difficult to mix
hydrophobic
hydrogen release
expensive
difficult to take out of the mouth
latex gloves use only
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How are additional silicones commonly reffered as?

A

polyvinyl siloxane

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

How are irreversible hydrocolloids commonly reffered as?

A

alginates

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

4 types of elastic materials you know?

A

hydrocolloids (irreversible, reversible)
silicones
polysulphides
polyethers

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

Which crowns can you use if the tooth is vital?

A

ceramic, zirconia, pfm

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

Which crowns can you use if the tooth is non-vital?

A

similar but will need opaque layer addition to cover any possible discolouration or post if ceramic not used

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

Types of removable prosthodontics for replacing a missing tooth:

A

acrylic

cocr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Types of fixed prosthodontics for replacing a missing tooth:

A

implants
conventional bridge (cantilever or fixed)
resin bonded bridge (maryland)

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

What are the advantages of implants?

A

adjacent teeth not involved at all
aesthetics
good term prognosis

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

What are the disadvantages of implants?

A

contraindicated wthen OH is poor and to heavy smokers
surgery involved
expensive

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

What are the disadvantages of conventional bridge?

A

most destructive option

can lead to devitalisation

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

What are the advantages of conventional bridge?

A

long term prognosis

aesthetics

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

What are the advantages of resin bonded bridge?

A

quick
predictable
least invasive
aesthetic

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

What are the disadvantages of resin bonded bridge?

A

can debond easier

metal may be visible - aesthetics

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

What kind of info do you need when a patient comes to your office?

A
  • complain, dental history, medical history, social history, history of presenting complain
  • clinical examination
  • extraoral examination
  • intra-oral examination: soft and hard tissues
  • special tests
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Indications for least invasive method:

A

good OH
neighboring teeth are non-restored
single posterior tooth replacement

26
Q

Contraindications for least invasive method:

A

teeth periodontally involved
bruxism
abutment teeth are heavily restored

27
Q

Which elastic material do you use for a crown/bridge?

A

additional silicones

28
Q

Which elastic material do you use for a removable prosthesis?

A

alginates

29
Q

What are the techniques for mandible manipulation in centric relation?

A

chin point guidance
chin point guidance with anterior jig
bimanual manipulation
using a spint

30
Q

Maximum Intercuspal Position definition:

A

=max contact of all teeth together for that individual’s occlusion

31
Q

Centric Relation definition:

A

=bilateral, unstrained mandible position in which the condylar disc is in the most sup ANT position in the glenoid fossa and the initial 20mm of incisal opening is pure hinge axis

32
Q

Which position do we use when we want to make large changes to the occlusion?

A

RCP

33
Q

What kind of approach is RCP?

A

re-organised approach

34
Q

Which position do we use when we want to conform the patient’s occlusion?

A

ICP

35
Q

What kind of approach is ICP?

A

conformative approach

36
Q

What type of defective margins do you know?

A

over contour
over extended
under extened
open margin

37
Q

What type of cements do you know?

A

Hard Cements - ex: GIC, Resin Cements

Soft Cements - ex: Zinc Oxide w/ or w/o Eugenol

38
Q

Indications of Soft cements:

A
  • temporaty crowns

- definitive restorations if: symptomatic tooth or trial assessment is required

39
Q

Indications of Hard cements:

A
  • definitive cementation
  • acid base rxn
  • polymerisation rxn
  • combination of above rxns
40
Q

Indications of Glass Ionomer Cement:

A

single metal or pfm crowns
fixed-partial and metal-ceramic dentures
patients w/ high risk caries

41
Q

Advantages of Glass Ionomer Cement:

A

high compression strength
reasonable working time
Fluoride release

42
Q

Disadvantages of Glass Ionomer Cement:

A

low tensile strength
not resistant to acid dissolution
sensitivity to early moisture contamination

43
Q

Indications of Resin Cement:

A

porcelain veneers
ceramic, Zr2O3 and composite onlays
resin bonded bridges
ceramic, Zr2O3 or fixed-partial dentures

44
Q

Advantages of Resin Cement:

A

high compressive and tensile strength
R to water dissolution
R to acid dissolution

45
Q

Disadvantages of Resin Cement:

A

high technique sensitive
marginal leakage due to polymerization shrinkage
variable film thickness

46
Q

What type of ceramics do you know?

A
  1. Glass matrix ceramics - ex: feldspatic, synthetic: lithium disilicate, glass infiltrated
  2. Polycrystallined ceramics - ex: alumina, stabilized zirconia
  3. Resin Matrix ceramics
47
Q

Definition of a crown:

A

=artificial replacement to restore missing tooth structure using materials such as ceramics, metal, combination of them

48
Q

Types of crowns:

A

zirconia, all metal, all ceramic, pfm, partial coverage crown(onlay, inlay)

49
Q

most conservative crown to most destructive crown:

A

zirconia, all metal, all ceramic, pfm, porcelain fused to zirconia

50
Q

Indications for a dental crown:

A

protection of remaining tooth structure
aesthetics
abutments for rpd
to alter the occulsal plane

51
Q

Measuring and monitoring tooth surface loss:

A

study casts, wear indices, photographs, direct measurements

52
Q

Basic Erosive Wear Examination (BEWE):

A

0 no tooth surface loss
1 initial loss of tooth surface
2 distinct defect, hard tissue loss <50% than tooth surface area
3 hard tissue loss >50% of the surface area

53
Q

How can you check the fit of the crown?

A

visual: margins, direct or w/ mirror, magnification
instruments: explorer, correct size tip and angle approach

54
Q

3 reasons for intervention in tooth wear cases:

A

altered appearance
sensitivity / pain
loss of function

55
Q

Different types of tooth surface loss?

A

attrition, abfraction, abrasion, caries, trauma, iatrogenic damage, acid dissolution

56
Q

Attrition description and sings:

A

=horizontal wear and flattening of incisal edges or cuspal tips of teeth from tooth to tooth contact

57
Q

Acid Dissolution description and sings:

A

=loss of tooth surface due to chemical processes in facial and cervical areas
Extrinsic factors: dietary and environmental
-upper ant: B
-post: O + P
Intrinsic factors: pathological - caries, vomiting
-upper ant: P
-post: O
cupping of incisal edges and cusps tips
perimolysis (small enamel rim around lesions)
smooth, shiny and rounded lesions

58
Q

All Ceramic advantages:

A

aesthetics, no allergies, biocompatible

59
Q

All Ceramic disadvantages:

A

destructive method, low repair potential, wear on opposing dentition, translucent, abbrasive to opposing teeth

60
Q

Monolithic Zirconia disadvantages:

A

expensive, wear on opposing teeth, translucent

61
Q

Monolithic Zirconia advantages:

A

aesthetics, no allergies, biocompatible, durable

62
Q

Monolithic Zirconia VS All Ceramic crowns

A

monolithic zirconia: more expensive and its durable

all ceramic: repair potential lower and destructive method

Fixed Prosthodontics (2 decks)

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