Midterm

Question 1

T/f: Epinephrine makes LA last longer

Answer 1

true

Question 2

t/f: When using amalgam make sure to fill 1 mm above the margins and fill box FIRST

Answer 2

true

Question 3

Need to have slanted prep for_______ ____ _____ or else will hit the pulp if it’s perpendicular

Answer 3

mandibular first premolar

Question 4

Root surface caries are more commonly found

Answer 4

Gingival to the contact

Question 5

All of the following are reasons we have failure at the gingival portion of the box except:

Answer 5

Incremental fills instead of bulk

Question 6

Get more post-op sensitivity with

Answer 6

Bulk fill

Question 7

T/F: it is okay to leave loose enamel rods n a class III

Answer 7

False???

I thought you could have undermined enamel on the facial wall

Question 8

All of the following are indications for composite except:

Answer 8

Heavy occlusion on the contact

Question 9

t/f: Adhesive separates in the presence in presence of water (water in tubules or ANYWHERE)

Answer 9

true

Question 10

t/f: Check shade before putting on a rubber dam

Answer 10

true

Question 11

t/f: When in dentin DO NOT BEVEL

Answer 11

true Keep at 90 degree butt margin

Question 12

Key difference composite and amalgam

Answer 12

Bevel gingival floor

Question 13

Why do we not use eugonal

Answer 13

Inhibits polymerization

causes termination

Question 14

t/f: Self-etching primer is not strong enough to etch enamel and only partially removes smear layer

Answer 14

true

Question 15

t/f: Cure-through gives better contour for class V restorations

Answer 15

true

Question 16

t/f: Palodent is placed 1 mm above margin

Answer 16

true

Question 17

t/f: Self-etch systems have acid in the primer

Answer 17

true

Question 18

Light Initiator is ______

Answer 18

camforquinone

Question 19

if prep is deeper/closer to the pulp you place retention grooves 1 mm farther axillay.

Answer 19

false

never put them deeper or else could have pulp exposure

Question 20

What is the sensitizing element of toothpaste?

Answer 20

Sensitivity toothpaste contains KNO3

Question 21

Micromechanical to enamel rods and micromechanical to dentin collagen

Answer 21

Etching?

Question 22

t/f: Hybrid layer is zone resin and intertubular dentin

Answer 22

true

Question 23

Strength for bonding comes from the_____ in intertubular dentin

Answer 23

collagen

Question 24

T/F: you must put down bonding in between every increment of composite

Answer 24

false, only when the prep has been exposed to saliva

Question 25

the dentin tubules are ______ near the dentin

Answer 25

wider

Question 26

More filler=______ strength

Answer 26

increases

Question 27

What is the order of the restoring a carious lesion?

Answer 27

Order: etch bond fill finish polish

Question 28

______ is caused by flexture/fatigue

Answer 28

Abfraction

Question 29

_______ is from lemon drops

Answer 29

Erosion

Question 30

t/f: Best thing to remove flash is gold knife

Answer 30

true

Question 31

When to re-etch?

Answer 31

Contaminated | Doesn’t look etched

Question 32

How thick is the bond applied?

Answer 32

thinly

Question 33

Which class has the highest C factor:

Answer 33

Class 1

Question 34

The hydrophobic portion of the bonding agent is what:

Answer 34

bonding resin

Question 35

When doing a class III make sure to preserve the______ contact

Answer 35

incisal

Question 36

Etching does all of the following:

Answer 36

does increase wettability, SA, surface free energy The old test was a bit confusing, so make sure to 2x check this

Question 37

______ happen from tugback

Answer 37

Voids

Question 38

best bond happens when bound to ______ (ends) portions of enamel rods

Answer 38

perpendicular

Question 39

When placing composite in bulk vs incremental is false?

Answer 39

Will have decreased incremental stress

Question 40

Heavy occlusion on L Ant teeth what is the prep type?

Answer 40

conventional

Question 41

Best description of collagen in a hybrid?

Answer 41

Zone collagen surrounded by resin in intertubular dentin

Question 42

Most probably explanation for a grainy finish of a composite after completion?

Answer 42

Premature curing by operatory light

Question 43

Which part of prep of class 2 and 3 have similar requirements?

Answer 43

Class 2 don’t break B contact Class 3 don’t break Incisal contact

Question 44

Which type of solvent in dental adhesion will undergo phase separation?

Answer 44

water

Question 45

What material in placement of resin composite improves surface wetting, increase surface area available for bonding, and increases surface energy?

Answer 45

Phosphoric acid

Question 46

Rank following composites in order of filler? | nanofiller, macrofiller, midifiller, microfiller

Answer 46

Macro, midi, micro, nano

Question 47

Which test is the best predictor for composite longevity

Answer 47

Fracture toughness

Question 48

Retention in a class 5 prep is placed at the ?

Answer 48

Occlusion axial line angle

Question 49

In regard to in euginol resin composites?

Answer 49

Inhibit polymerization in composite

Question 50

Which part of the tooth can you desiccate dry with the air syringe?

Answer 50

dentin

Question 51

Abfraction filled with what kind of composite?

Answer 51

microfill

Question 52

Retention groove in a class 3 is placed in?

Answer 52

gingival