Brainscape's Knowledge GenomeTM

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


See full index

Fixed > Final > Flashcards

Final Flashcards

1
Q

3 considerations when prepping a tooth

A

Biologic
Mechanical
Esthetic

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

When prepping, what 4 things could possibly affect future dental health

A

Axial reduction
Margins
Occlusal considerations
Preventing tooth fractures

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

What 3 things should be considered in providing resistance

A

Magnitude and direction of dislodging forces

Geometry of tooth prep

Physical properties of luting agent

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

What 5 things are considered when providing retention form

A
  • Magnitude of dislodging forces
  • Geometry of prep
  • Roughness of fitting surface of restoration
  • Materials being cemented
  • Film thickness of the luting agent
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The three mechanical considerations are:

A

Resistance
Retention
Deformation prevention

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

define:
CVC
MCC
ACC

A

Complete veneer crown
Metal ceramic crown
All ceramic crown

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

Indications for a crown (5)

A
  1. Extensive coronal destruction
  2. Short clinica crowns
  3. Endo
  4. Maximum resistance/retention needed
  5. Correction of axial contours
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

3 Contraindications for crowns

A

Intact buccal or lingual wall
Less than maximum res/ret needed
If objectives can be met more conservatively

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

4 types of finish lines and with what type of crown they’re used

A 
Shoulder
   -MCC, ACC, porcelain jacket crown
Bevelled shoulder
   -MCC (buccal only)
Heavy chamfer
   -High strength porcelain, buccal of MCC
Chamfer
   -full metal, palatal/lingual of MCC, resin bonded
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Chamfer edge is a _ angle

A

Obtuse

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

The 169 bur tip is _ wide and towards the shank it is _ wide

Tip and proximal widths of 747?
242?

A
  1. 5/0.8
  2. 5/1
  3. 8/1.2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

3 causes of inadequate retention and resistance

A

Excessive convergence angle
Too short axial walls
Not enough surface area to resist tipping

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

7 things on the biological contour checklist

A
  1. Facial/ lingual convexities
  2. Mesial/distal concavities
  3. Transitional line
  4. Contact area and embrasures
  5. Cervical curvatures
  6. Marginal ridges
  7. Tooth reduction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Facial/lingual contours can extend how far beyond CEJ?

And 2 exceptions

A

0.5mm

Mandibular second premolar/molars - 0.75 to 1mm

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

An overcontoured restoration at the cervical level can result in_

A

Inflammatory response

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

Proximal surfaces are always _ b/t the contact area and the CEJ in order to _

A

Flat or slightly concave

Allow room for the papillae

17
Q

Contact areas are in _ for all teeth except _ which have contacts in _

A

Occlusal third

Maxillary molars

Junct. Of occlusal and middle 3rd or mid 3rd

18
Q

_ contacts are more cervical than _ for all teeth except _

A

Distal
Mesial
Mandibular first premolars

19
Q

Marginal ridges converge from buccal to lingual for all teeth except _ and _

A

3 cusp mandibular 2nd premolar

Maxillary first premolar

20
Q

Lingual embrasures are larger than buccal for all except _ and _

Why?

A

2/3
14/15

Long contact

21
Q

Alginate is a _ which is a type of _

A

Irreversible hydrocolloid

Viscoelastic impression material

22
Q

3 types of synthetic elastomers

Synthetic elastomers are a type of _

A

Polysulfide
Silicone
Polyether

Viscoelastic impression material

23
Q

Two types of hydrocolloids

What is it made of

A

Alginate and Agar

Water bound within a colloid matrix

24
Q

Difference b/t thermoplastic and thermoset

A

Thermoplastic doesn’t have cross-linking

25
Q

Characteristics of polysulfide

A

Conform well to tooth

Oxidized by PbO2 or CuOH to form rubber with water condensate

Requires rigid custom tray

26
Q

Condensation silicone is made of

A

Low molecular weight oligomers containing reactive terminal hydroxyl groups

27
Q

Two other names for addition silicone

A

Poly (vinyl siloxane)

Vinyl polysiloxane

28
Q

Which material needs a delayed pour

A

Addition silicone

29
Q

Mercaptans are in _

A

Polysulfides

30
Q

4 requirements of the ideal impression material

A 
Low cost
Long shelf life
Biocompatibility
Pleasant to patient
Good properties before, during, after setting
31
Q

Why is zirconia good for crowns

A

Long lasting and indestructible

Body doesn’t reject it

32
Q

MCC is also the same thing as

A

Porcelain fused to metal

33
Q

The impression material we used

A

Polyvinyl siloxane (aquasil LV and Heavy)

34
Q

Why seal embrasures when taking impression

A

Prevent material from forming a bridge

35
Q

Why is gold a noble metal

A

Doesn’t form stable oxides at room temp

Low tendency to lose electrons and become + ions

36
Q

1 troy = _ pennyweights = 1 _ = _ gm

A

20 penny weights
1 dwt
1.555 gm

37
Q

Which type of casting alloys are kept in dental school

A

2 - single tooth restoration

3 - multiple unit fixed rest.

38
Q

Major elements in gold casting alloys

A 
Gold
Copper
Silver
Platinum
Palladium
Zinc

Fixed (3 decks)

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