Final Flashcards

(52 cards)

1
Q

What will inhibit free radical oxidation

A

Oxygen

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2
Q

4 major components of composite

A
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3
Q
A

Oligomer component is BISGNA

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4
Q

Fillers are very important

A
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5
Q

More filler =

A

Stronger and more abrasion resistant

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6
Q

Filler size. Larger particles=

A

Rougher surface

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7
Q

What degrades the bond of composite

A

When water is absorbed intraorally

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8
Q

Oxygen is

A

An air inhabited layer

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9
Q

What’s the primary cause if you add composite and it falls off

A

You more than likely polished it

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10
Q

Galvanic shock

A
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11
Q

Why does galvanism cause a shock

A

Two diff metals

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12
Q

Adding composite as often as you can in 2mm increments why?

A

Minimize amount of shrinkage

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13
Q

For bond to flow into Micro mechanical retention what is needed

A

Low contact angle

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14
Q

Depth of cure and ways you can influence it

A
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15
Q

Why is barium added to composite

A

It’s radio opaque not radiolucent

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16
Q

When you put the light on the composite where should it be

A

As close to the composite as you can get without touching it at flat angle

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17
Q

Biocompatablity

A
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18
Q

Chemical/dual cure has

A

Shrinkage

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19
Q

Composite is held in place by

A

The micro mechanical retention from the tubules

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20
Q

Polymerization reaction is what kind of reaction

A

Free radical ?

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21
Q

When you are choosing a. Composite resin what factor will have the greatest impact on its characteristics

22
Q

How much overlap for cerac scanner

23
Q

What’s the difference between PVS impressions and cerec

A

Cerec is positive PVS and agitate it negative impression

24
Q

Bluecam and Omnicam

A

Both need isolation

25
Why do you use a powder with digital
Reduce shine of metals
26
Is it difficult to store digital scans
No
27
Characteristics of waxes
28
Are waxes good thermal conductors
No but the have a large coefficient of expansion
29
All waxes have a ______________
Specific melting RANGE
30
When you’re using a wax that has a tendency to return to its original shape it is ___________
Elastic memory
31
What do you use for a final impression
Elastomeric material PVS
32
What elastomeric impression material may form hydrogen gas
33
Monomer and polymer which is which
Monomer is liquid polymer is powder
34
What in benzoyl peroxide
35
Which chemical is added to the light activated resin as photoinitiator
Campoq
36
When bonding cement to calcium of hydroxy appetite and dentin what kind of bond is it
Chemical
37
Waht causes surface tension in liquids
38
Amorphous and crystalline
39
Is it a good idea to subject materials to plastic strength
No
40
Cathodic
41
Anodic
42
Stress strain diagram
43
Force deformation diagram
44
Waht causes precipitation hardening
Type III metal from clenching or RAPID COOLING
45
To excise tissue under a healing cap how would you do it
A laser to prevent bleeding for impression
46
When you mix an amalgam what is happening
Amalgamation
47
What part of mercury is the most dangerous
When it is being grounded out of a restoration and vapor element is created
48
Dual cure
49
Composite procedure
50
Chart on composites restoring facial on #9, what composite would be best for it
Micro fill—nano particle ?
51
Provisional composite use for
Temp crown
52
How can you control the depth of cure of your light
Distance the light is from restoration. Amount of time cured. Intensity of light.