Quiz 1B

Question 1

Layer of debris (organic and inorganic material) that forms onto the enamel and dentin when prepared with rotary instruments?

Answer 1

smear layer

Question 2

Layer a few microns thick and weakly adheres to the substrate; also lowers the surface energy?

Answer 2

smear layer

Question 3

What must be removed or penetrated by the adhesive (usually by acid etching)?

Answer 3

smear layer

Question 4

What is a strong acid solution, such as phosphoric acid solutions and gels 35-37%, that is also called conditioners?

Answer 4

etchants

Question 5

Hydrophilic monomers to produce good wetting that is usually carried in a solvent (acetone, ethanol, water)?

Answer 5

primers

Question 6

What component of the material of the bonding system is HEMA found in?

Answer 6

primer

Question 7

What does the HEMA molecule look like?

Answer 7

has hydrophilic & hydrophobic end

Question 8

Hydrophobic, dimethacrylate oligomers compatible with the primer and composite monomers (primary sources of color)?

Answer 8

adhesives

Question 9

What are light cured, an activator like camphoroquinone and organic amine, or dual-cured catalyst for self curing?

Answer 9

initiators and accelerators

Question 10

What gives bonding agents a higher bonding strength?

Answer 10

fillers

Question 11

What are some other ingredients in the composition of bonding materials?

Answer 11

fluoride, antimicrobials (gluteraldehyde)

Question 12

What occurs after etching primarily by micro-mechanical retention removing the smear layer HA crystals by dissolution?

Answer 12

enamel bonding

Question 13

What indicates macro-spaces formed after enamel bonding?

Answer 13

frosty appearance

Question 14

What forms by etching with phosphoric acid gel to aid enamel bonding?

Answer 14

macro and micro tags

Question 15

What is more numerous and contributes most to micro-mechanical retention?

Answer 15

micro tags

Question 16

What flows in the micro/macro tags (micropores) irregularities?

Answer 16

primer and adhesive

Question 17

What forms the resin tags when cured?

Answer 17

primer and adhesive

Question 18

What are the three procedures of dentin bonding?

Answer 18

1) Etching
2) Priming
3) Bonding

Question 19

What does etching do?

Answer 19

removes smear layer
removes HA from outer dentin layer
exposes collagen sponge layer
exposes dentin tubules

Question 20

Why must care be taken after etching to prevent drying?

Answer 20

to keep dentin surface and collagen layer from collapsing on itself, thus preventing penetration by the primer, thus bonding will fail

Question 21

The primer forms what layer?

Answer 21

hybrid layer

Question 22

The process of impregnation of the etched dentin by the resin in the primer?

Answer 22

the hybrid layer formation

Question 23

If the hybrid layer fails to fully impregnate with primer, what happens?

Answer 23

space creates mechanically weak zone

Question 24

Primers have solvents that do what?

Answer 24

enhance wetting

carry the monomers into the tags

Question 25

To ensure to carry the monomers deep as the solvent evaporates, what can we do?

Answer 25

apply several layers of the primer