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Operative Dentistry > Operative II-E3:Bonding and Materials > Flashcards

Operative II-E3:Bonding and Materials Flashcards

1
Q

Is a primer hydrophilic or phobic?

A

phillic

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2
Q

Is a primer acidic or basic?

A

acidic

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3
Q

Are primers monomers or polymers?

A

monomers

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4
Q

What are the two chemicals that primers are mixed with? What is their function?

A

alcohol and/or acetone…to evaporate and remove water

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5
Q

Function of PRIMER: to displace _______ and allow the _______ to penetrate the DENTINAL _______ matrix.

A

water….monomers….COLLAGEN

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6
Q

Dentin bonding primers: Promotes infiltration into _______

A

collagen

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7
Q

Dentin bonding primers: transforms hydro______ to hydro______

A

phillic to phobic

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8
Q

Dentin bonding primers: ________ is denatured
– Proteins are ________ from dentinal fluids
– Dentinal tubule ________ is decreased

A

collagen…. precipitated…permeability

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9
Q

In our 4th gen optioned FL what was the yellow container? black?

A

yellow-primer…black adhesive

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10
Q

What are the two types of solvent for the adhesives?

A

Ethanol and Acetone…like the primers!

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11
Q

WHICH GENERATION of Adhesives is the GOLD STANDARD???? How many steps are involved in this generation? What is an example product?

A

4th generation…3 steps-etch, primer,bonding resin…Example-OptiBond FL

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12
Q

How many steps AND What steps: 4th generation

A

3 steps-1.etch 2.prime 3.adhesive

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13
Q

How many steps AND What steps: 5th generation

A

2 steps-1.etch 2.prime+adhesive….OPTIBOND SOLO PLUS

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14
Q

How many steps AND What steps: 6th generation

A

2 steps: 1.Etch+prime 2.Adhesive

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15
Q

How many steps AND What steps: 7th generation

A

1 step: 1.etch+prime+adhesive

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16
Q

6th gen-2 step: pros- ____ can be lowered enough to etch uncut enamel

A

pH

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17
Q

6th gen-2 step: pros- Smaller _______/______ layer still has high initial bond strength

A

smear/hybrid

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18
Q

6th gen-2 step: pros- more or less technique sensitive?

A

LESS

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19
Q

6th gen-2 step: pros- does it help sensitivity?

A

YES! there is less sensativity

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20
Q

6th gen-2 step: Cons-pH is limited and ______ layer is retained

A

smear

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21
Q

6th gen-2 step: Cons- LIMITED ______ layer hybridization

A

smear

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22
Q

6th gen-2 step: Cons- you can get ______ entrapment in the hybrid layer!!!

A

WATER

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23
Q

6th gen-2 step: Cons- long term bond _______

A

HYDROLYSIS

24
Q

7th-gen-all in one: pros— Most _______ to use

Less _______ sensitive

A

Convenient…technique

25
Q

7th-gen-all in one: pros—Smaller _____/_____ layer still has high initial bond strength…and reduced ______

A

smear/hybrid…sensativity

26
Q

7th-gen-all in one: cons….UNLIKE the 6th gen- pH is very limited and inadequate to etch uncut _______- resin compatibility

A

enamel

27
Q

7th-gen-all in one: Cons—-______ layer retained

Limited smear layer ________…______ absorbed into resin

A

smear…hybridization…water

28
Q

7th-gen-all in one: Cons—-Storage problems…Long term bond _______….Compatibility with ____ curing resins

A

hydrolysis…self

29
Q

CAUSES OF HYDROLYSIS-the ______ component absorbs water!

A

RESIN

30
Q

CAUSES OF HYDROLYSIS-maintaining the ______ layer

A

smear

31
Q

CAUSES OF HYDROLYSIS-What are the two components of the smear layer and that substance increases activity with the smear layer?

A

smear layer: 70% dentin 30% bacteria…MMP activity

32
Q

Hybrid composite has both ______ and _______ fillers

A

large and small

33
Q

Microhybrid composite has mostly _____ fillers

A

small

34
Q

Whats the difference between nano-composite and micro-hybrid composite?

A

nano has clusters of really small particles vs micro particles can only go down to the size of the nano cluster

35
Q

NanoClusters-Larger nanoclusters do not pluck— individual particles do Leads to better long-term _____ retention

A

polish

36
Q

What is the structure of a Giomer?

A

Surface of the silica particle is modified with Glass Ionomer and additional elements…you can get F- release with your restoration!

37
Q

Each tooth should appear _____ times narrower than its mesial neighbor in a frontal view….but this amount _____ is more commonly accepted in the West.

A

1.618…1.4 in the West

38
Q

What are the 3 equal proportions on an aesthetic face?

A

1/3 forhead-glabella…1/3 glabella to subnasion…1/3 subnasion to menton

39
Q

What is the aesthetic proportions from the subnason to the mention?

A

1/3 subnason to upper lip, 2/3 upper lip to menton

40
Q

YOUNG TEETH- have lower or higher value?

A

higher value (brighter)

41
Q

YOUNG TEETH- have more or less chroma?

A

less chroma (color)

42
Q

YOUNG TEETH- more or less surface texture?

A

MORE surface texture

43
Q

YOUNG TEETH- more or less luster?

A

LESS luster (less reflective)

44
Q

YOUNG TEETH-more or less morphology?

A

more

45
Q

What are 2 examples of youthful features in teeth?

A

1.Perikymata 2.Mamelons

46
Q

The avg length of the upper lip on females is ___-___mm on females and ___-___mm on males…it gets ______ with age…

A

female-20-22mm….male22-24mm…longer

47
Q

IDEALLY there should be ___-___mm of GINGIVAL display in a full smile…this decreases with age and loss of muscle tone..

A

1-2mm

48
Q

What does the ‘F’ or ‘V’ sound evaluate?

A

INCISAL LENGTH

49
Q

What does the ‘E’ or ‘S’ or ‘66’ sound evaluate?

A

“speaking space” or interocclusal space/VERTICLE dimension

50
Q

The ZENITH of each tooth’s gingival arch is positioned slightly ______

A

distal

51
Q

What is the #1 most important factor in Tx Planning cosmetics?

A

OCCLUSION!!

52
Q

What is the optimal distance to judge a smile?

A

18”…speaking distance

53
Q

What is the weakest bonding system?

A

Glass Ionomer

54
Q

Which material has a very strong affinity for phosphate bonding?

A

zirconia

55
Q

What two materials do you not sandblast, what do you sandblast?

A

do not sandlast emax or vita…sandblast zirconia

56
Q

Do you HF for zirconia?

A

NO

Operative Dentistry (25 decks)

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