Quiz III IV

Question 1

GI needs ___ dentin

Answer 1

Intact dentin with exposed mineral

Question 2

Adhesives need

Answer 2

demineralized dentin with exposed collagen

Question 3

Conditioner

Steps

Answer 3

Polyacrylic acic
Solublizes smear layer
Removes smear layer
Leaves smear plugs

Question 4

How long are etchants and conditioners used for

Answer 4

15-20 seconds

Question 5

Etchant
Composition
What does it do

Answer 5

35% phosphoric acid
Removes smear layer and smear plugs
Demineralizes dentin
Leaves collagen rich surface w/ pores

Question 6

GI powder
Composition
Ions released in order

Answer 6

CaFAlSiO2
Ca
Al
F

Question 7

GI liquid composition

Answer 7

50% water 50% polyacid copolymers

Question 8

RMGI liquid

Answer 8

35% water
35% methacrylate
30% HEMA

Question 9

RMGI during reaction

Answer 9

Polymerization shrinkage
Swelling from water absorption
No net change

Question 10

RMGI Curing

Answer 10

Triple cure
Light cure
Self cure
Acid base reaction

Question 11

When to bevel

Answer 11

Composite only
Walls in enamel
NOT IN high stress area

Question 12

Purpose of bevel

Answer 12

Improved bonding from etched ends of enamel rods

Question 13

Selection of most appropriate material

Answer 13

Esthetics
Location (forces)
Caries vs non caries

Question 14

hybrid layer

Answer 14

collagen and resin adhesive

Question 15

Disadvantages of GI

Answer 15

Stain resistance
Strength
Opaque
Slow setting
Early dissolution

Question 16

RMGI vs GI

Answer 16

Better solubility resistance
Better strength, less stiff
Better optical properties