Operative Test 1

Question 1

GI is _ based

Composites are _ based

Answer 1

Water

Polymer

Question 2

How does GI attach

Answer 2

Chelates with HA surfaces

Question 3

Composite adhesives need what

Answer 3

Demineralized dentin surface with exposed collagen

Question 4

GI conditioners are what and what do they do

Answer 4

Mild organic acids

Solubilizes smear layer
Removes smear layer
Leaves smear plugs intact

Question 5

T/F conditioners demineralization dentin and enamel

Answer 5

False. Don’t demineralization either

Question 6

Conditioners vs. enchants

Answer 6

C: leaves smear plugs intact
Doesn’t demineralize
Cleans surface

E: removes smear layer
Demineralizes surface dentin
Leaves collagen surface with pores

Question 7

What s the powder in RMGI

What is the liquid GI vs. RMGI and pH

Answer 7

CaFAlSiO2 glass

GI:
Water
Polyacid copolymers
pH 1

RMGI:
35% water
35% methacrylate modified polyacid copolymers
30% HEMA
pH 2

Question 8

Disadvantages of GI

Answer 8

Slow setting
Early dissolution
Opaque
Bad stain resistance
Weak

Question 9

Class V axial depth

Answer 9

1.2

Question 10

4 functions of dentin/pulp complex

Answer 10

Formative (1/2 dentin)
Defensive (reparative dentin)
Nutritive
Sensory

Question 11

5 things tubule fluids detect

Answer 11

Osmolarity changes
Thermal changes
Desiccation
Pressure changes
High-speed cutting

Question 12

Reversible pulpitis needs to be treated how

Answer 12

With a base

Question 13

3 tests to test pulp status

Answer 13

Cold/hot
Electric pulp test
Percussion test

Question 14

Purpose of liners and bases

Answer 14

Protect pulp and minimize sensitivity

Question 15

Liner to use with amalgam

Answer 15

Copalite

Question 16

Liner to use with composite

Answer 16

Vitribond, seals dentin below composite

Question 17

Purposes of liners

Answer 17

Protect dentin from residual reactants
Electrical insulation
Thermal protection
Pulpal treatment

Question 18

Why are liners important for composites

Answer 18

Etching can cause a negative rxn if not sealed

Question 19

5 types of liners and an example of each

Answer 19

Solution liners(copalite, adhesive)

Suspension liners(CaOH2)

Cement liner (GI)

Eugenol liners (ZOE)

Dentin bonding systems (optibond)

Question 20

Setting rxn of solution liner

Answer 20

Evaporation

Question 21

Affected vs. infected dentin

Answer 21

Take out infected dentin

Leave affected dentin

Question 22

4 types of bases

Answer 22

Zinc phosphate
ZOE
Polycarboxylate
GI/RMGI

Question 23

What do you use with RMGI

Answer 23

Light cured CaOH

Question 24

Where do you mix ZnPO4, why

Answer 24

On a cool slab, absorbs heat of rxn and permits more powder to be incorporated

Question 25

GI vs ZnPO4

Answer 25

GI: adheres to tooth structure
Fluoride release
Better retention
Dimensionally stable
Biocompatible

Question 26

How do CaOH liners work

Answer 26

Release OH ions

Stimulate odontoblast formation

Question 27

ZOE is a _ _ material

Answer 27

Intermediate restorative material

Question 28

For deep excavation (RDT <0.5 mm), OSU recommends _ after _

Answer 28

GI/RMGI after CaOH

Question 29

When to replace a cusp

Answer 29

Facial or lingual extension exceeds 2/3 from primary groove to cusp tip

Question 30

Pin size we use

Answer 30

0.021”/ 0.525mm

Question 31

2/2/2/2 rule

Answer 31

2mm pin hole depth
2 drill diameters inside DEJ
2mm length of pin
2mm of amalgam over pin