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Operative II > Final Exam > Flashcards

Final Exam Flashcards

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1
Q

When to place indirect restorations (inlays/onlays/veneers/crowns/etc.):

A
  1. when margin exceeds 2/3 the distance between the central groove and cusp tips
  2. when the margin ends 1/2 distance between the central groove and cusp tips
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2
Q

When to use an only instead of an inlay:

A
  1. when buccal-lingual width of cavity prep is:
    - 1/2 between the central groove and cusp tips: consider onlaying
    - 2/3 way between central groove and cusp tips: should only the cusp
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3
Q

Inlay dimensions:

A
  1. isthmus must be 2.0 mm wide and diverge
  2. facial, lingual and gingival margins must have clearance of at least 0.5 mm
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4
Q

Principles of gold onlays:

A) _____ bevel of ______mm on cusps of ______ occlusion
B) ____ mm on cusp of _______
C) Gold onlay- ____ reduction on functional cusp & _____ reduction on non-functional cusp

A

A) Reverse; 1-2mm; supporting
B) 0.5mm; non-supporting
C) 1.5mm; 1.0mm

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5
Q

Wears the opposing teeth the most and has the highest resistance to wear:

A

porcelain

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6
Q

List the following materials in order of most to least wear on opposing dentition:

-direct resin composites
-porcelain
-lab processed composite

A
  1. porcelain
  2. lab processed composites
  3. direct resin composites
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7
Q

Describe the reduction needed for a porcelain onlay:

A

Functional cups: 2.0mm
Non-functional cusp: 1.5mm

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8
Q

Describe the reduction needed for a gold onlay:

A

Functional cusp: 1.5mm
Non-functional cusp: 1.0mm

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9
Q

T/F: there should be MO bevel on porcelain margins

A

True

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10
Q

When considering a provisional, use a _____ cement

A

eugenol-free

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11
Q

______ will interfere with bonding with a provisional

A

eugenol

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12
Q

When doing a provisional, if you must use eugenol, then you should:

A

follow with using pumice to remove eugenol

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13
Q

Describe the prep needed for porcelain veneers:

A

minimal prep needed

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14
Q

When prepping for porcelain veneers, you should try to keep prep within ______ for _____

A

enamel; optimal bond strength

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15
Q

What is the minimum depth that pins go into dentin?

A

2mm

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16
Q

Why don’t you want a pin on the mesial of #5?

A

Concavity of root

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17
Q

Why do you place composite in increments?

A

To minimize polymerization stress

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18
Q

Dentist restores a lesion with resin infiltration by:

A

Etch only

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19
Q

If you have two adjacent preps…

A

prep largest first, but restore smallest first

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20
Q

What bacteria is found in advanced dental caries?

A

lactobacilli

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21
Q

If there is only 0.5mm of dentin between the pulp and restoration, what should be used?

A

CaOH liner than RMGI

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22
Q

What does the oxygen inhibited layer do?

A

increases wetability and allows for adding more composite

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23
Q

1mm above the crystal bone, you want to use:

A

amalgam

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24
Q

Pins increase which of the following:

-convinience
-resistance
-retention

A

retention

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25
What is the minimum depth that pins go into the dentin?
0.5?????
26
Why wouldn't you use a pin on the mesial of #5?
concavity of the tooth
27
Why do you place composite in increments?
to minimize polymerization stress
28
A dentist would restore a lesion with resin infiltration by:
etch only
29
If you have two adjacent preps/restorations you should:
prepare largest first, but restore smallest first
30
What type of bacteria is found in advanced dental caries?
lactobacilli
31
If you only have 0.5mm of dentin between the pulp and restoration, you should use?
CaOH liner (dycal or life) and then RMGI (vitrebond)
32
Increases wet ability and allows the adding of more composite:
oxygen inhibited layer
33
if you are 1mm above the crestal bone, you would want to use:
amalgam
34
The least desirable finish for porcelain veneer is:
may be lingual something
35
Pins increase which of the following?
Retention
36
What is an Emax crown made of?
Lithium discilicate
37
T/F: MO #3 gold onlay always break the mesial proximal contact
???
38
What does adding more filler do?
increases strength
39
Who is the author of our textbook:
Dr. Sturdevant
40
Demineralization occurs at a pH of:
4.5
41
Patient comes in with sensitivity and you had done a class V the day before and all the margins are sealed, what is the likely cause?
Dentin tubules exposed during polishing
42
Patient comes in with small DO, what do you recommend and why?
Composite, to conserve tooth structure
43
What increases surface area available for bonding
???
44
Which of the following determines the success for a class II restoration?
moisture control
45
Which liner do you use of your class II went too deep?
Vitrebond (RMGI)
46
Which of the following is most damaging to the periodontal?
overcontouring of class V
47
What might you use to increase dentin bonding?
use a 35% phosphoric acid
48
Where does adhesive bond best?
intertubular dentin
49
What tooth # would have pulp exposure if prepared perpendicular to long axis of tooth?
28
50
Highest bonds achieved in enamel etching
Type I honeycomb
51
From an occlusal view, axial wall in class I preps appear:
convex
52
Unfilled restoration is caused by:
over-etching
53
Dr. Murphey likes house what for a class III with gingival inflammation?
Toffilmeyer
54
Put the following in order: -pumice -rubber dam -etch -shade select
1. shade select 2. pumice 3. rubber dam 4. etch
55
What should be done if the prep exceeds 2/3 distance between central groove and cusp?
onlay
56
What material should be used to build on top of a pin that is 1mm above the alveolar crest?
amalgam
57
You would find the unbeveled sides in class II prep at the enamel rods at the _____. The highest bond strength is at the enamel _____
sides; endsSi
58
Check occlusion before you prep. Check occlusion after restoration is completed:
both true
59
The LEAST common finish line for porcelain veneers:
supragingival
60
Why do you do dovetails for inlays?
prevent proximal displacement
61
What is true about dentin and what we want to bond to it?
dentin with sound collagen fibrils
62
What is in your saliva that helps remineralization:
phosphate
63

Operative II (6 decks)

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