Operative II-E3:Bonding and Materials Flashcards Preview

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

Flashcards in Operative II-E3:Bonding and Materials Deck (56):
1

Is a primer hydrophilic or phobic?

phillic

2

Is a primer acidic or basic?

acidic

3

Are primers monomers or polymers?

monomers

4

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

alcohol and/or acetone...to evaporate and remove water

5

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

water....monomers....COLLAGEN

6

Dentin bonding primers: Promotes infiltration into _______

collagen

7

Dentin bonding primers: transforms hydro______ to hydro______

phillic to phobic

8

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

collagen.... precipitated...permeability

9

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

yellow-primer...black adhesive

10

What are the two types of solvent for the adhesives?

Ethanol and Acetone...like the primers!

11

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

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

12

How many steps AND What steps: 4th generation

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

13

How many steps AND What steps: 5th generation

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

14

How many steps AND What steps: 6th generation

2 steps: 1.Etch+prime 2.Adhesive

15

How many steps AND What steps: 7th generation

1 step: 1.etch+prime+adhesive

16

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

pH

17

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

smear/hybrid

18

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

LESS

19

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

YES! there is less sensativity

20

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

smear

21

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

smear

22

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

WATER

23

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

HYDROLYSIS

24

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

Convenient...technique

25

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

smear/hybrid...sensativity

26

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

enamel

27

7th-gen-all in one: Cons----______ layer retained
Limited smear layer ________...______ absorbed into resin

smear...hybridization...water

28

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

hydrolysis...self

29

CAUSES OF HYDROLYSIS-the ______ component absorbs water!

RESIN

30

CAUSES OF HYDROLYSIS-maintaining the ______ layer

smear

31

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

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

32

Hybrid composite has both ______ and _______ fillers

large and small

33

Microhybrid composite has mostly _____ fillers

small

34

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

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

35

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

polish

36

What is the structure of a Giomer?

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

37

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

1.618...1.4 in the West

38

What are the 3 equal proportions on an aesthetic face?

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

39

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

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

40

YOUNG TEETH- have lower or higher value?

higher value (brighter)

41

YOUNG TEETH- have more or less chroma?

less chroma (color)

42

YOUNG TEETH- more or less surface texture?

MORE surface texture

43

YOUNG TEETH- more or less luster?

LESS luster (less reflective)

44

YOUNG TEETH-more or less morphology?

more

45

What are 2 examples of youthful features in teeth?

1.Perikymata 2.Mamelons

46

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

female-20-22mm....male22-24mm...longer

47

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

1-2mm

48

What does the 'F' or 'V' sound evaluate?

INCISAL LENGTH

49

What does the 'E' or 'S' or '66' sound evaluate?

"speaking space" or interocclusal space/VERTICLE dimension

50

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

distal

51

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

OCCLUSION!!

52

What is the optimal distance to judge a smile?

18"...speaking distance

53

What is the weakest bonding system?

Glass Ionomer

54

Which material has a very strong affinity for phosphate bonding?

zirconia

55

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

do not sandlast emax or vita...sandblast zirconia

56

Do you HF for zirconia?

NO