Module 2

Question 1

Micro-leakage causes?

Answer 1

hypersensitivity of the tooth

Question 2

What material is replacing base materials because it eliminates micro-leakage?

Answer 2

bonding material

Question 3

Base materials are used on _____ preps?

Answer 3

deep

Question 4

Base materials can help absorb ______ forces?

Answer 4

bitting

Question 5

What dental cements can be used as bases?

Answer 5

ANY

Question 6

What base material is similar to ZOE but is stronger and has less effect on the pulp?

Answer 6

EBA (ethoxybenzoic)

Question 7

What is the OLDEST type of cement that had to be mixed on a cool glass slab?

Answer 7

Zinc Phosphate

Question 8

What are the two components of Zinc Phosphate cements?

Answer 8

Zinc oxide powder

Phosphoric acid liquid

Question 9

What base is acidic but the Ph rises with time?

Answer 9

Polycarboxylate

Question 10

Polycarboxylate can be used under _______ restorations?

Answer 10

all

but mostly under amalgams

Question 11

What cement/base material REVOLUTIONIZED dentistry?

Answer 11

Glass Ionomer

Question 12

Glass Ionomer can bond to ________ and releases ______.

Answer 12

enamel/other polymer materials

fluoride

Question 13

Glass Ionomer has what type of curing method?

Answer 13

dual (light/chemical)

Question 14

Due to the bonding abilities of glass ionomer _____ ____ is eliminated?

Answer 14

micro-leakage/sensitivity

Question 15

______ cement/base is used when a restoration is temporary and helps to sedate the pulp?

Answer 15

ZOE

Question 16

What material is used MOST often as a Intermediary Base material in DEEP preparations due to its ability to stimulate reparative dentin?

Answer 16

Calcium Hydroxide

Question 17

What material is used to seal cut dentinal tubules?

Answer 17

varnishes

Question 18

________ of amalgam fillings caused self-sealing of micro-leakage?

Answer 18

corrosion

Question 19

Calcium Hydroxide has a _____ pH?

Answer 19

basic

Question 20

One downfall with Calcium Hydroxide?

Answer 20

dissolves easily in oral fluids (weakens tooth)

Question 21

As calcium hydroxide dissolves it ____ the pH and _____ bacterial growth?

Answer 21

increases

decreases

Question 22

Calcium Hydroxide has what type of curing method?

Answer 22

dual

Question 23

What is the purpose of a dental liner?

Answer 23

reduce acidity
stimulate pulp
acts as a bonding material

Question 24

What is the purpose of a base?

Answer 24

absorb biting forces

insulate pulp from temp changes

Question 25

What is an Esthetic Direct Restorative Material?

Answer 25

Composte fillings

Question 26

A blend of glass ionomer and composite materials is termed a?

Answer 26

compomer

Question 27

a blend that has more glass ionomer than composite is termed a?

Answer 27

polyacid modified glass ionomer

Question 28

PMMA stands for?

Answer 28

polymethyl/polymethacrylate

Question 29

Direct restorations are made?

Answer 29

in house (placed chairside)

Question 30

What type of cross-linked polymer resin is most popular in dentistry?

Answer 30

Dimethacrylate

Question 31

Dimethacrylate resin is a reaction between_______ and _______

Answer 31

bisphenol-A | glycidyl methacrylate

Question 32

Dimethacrylates are preferred due to increased ____ and _______ strength and a lower _____ _____

Answer 32

stiffness compressive water absorption

Question 33

Bis-GMA has ____ molecules thus having less _______

Answer 33

large | shrinkage

Question 34

What type of Dimethacrylate is used most often?

Answer 34

TEGDMA

Question 35

Composite filler particles can be a combination of what materials?

Answer 35

Silicates (Quartz) Barium/Strontium/Zinc Silane

Question 36

What is the function of Barium/Strontium/Zinc in the composite filler material?

Answer 36

Radiopaque material to facilitate diagnosis

Question 37

What is the function of Silane in the composite filler material?

Answer 37

Bonds matrix to filler

Question 38

Filler Size: Macro = Midfill = Micro =

Answer 38

10-20 microns .1- 10 microns .01- .1 microns

Question 39

What type of composite filler size is best?

Answer 39

hybrid of sizes

Question 40

What is the smear layer?

Answer 40

enamel and dentin debris from the drill

Question 41

How do you remove the smear layer?

Answer 41

etch