Chapter 7 - Dental Cements

Front 1

What is a base?

Back 1

Is stronger and thicker than a liner, and provides thermal insulation.

Front 2

What are composite cements?

Back 2

are composite materials with a higher percentage of resin and smaller particle sizes to reduce viscosity.

Front 3

What is eugenol?

Back 3

Is an organic liquid that is also a weak acid. It is a major component of oil of cloves.

Front 4

What are glass ionomer cements?

Back 4

Are formed when a glass powder is mixed with an aqueous solution of poly-acrylic acid.

Front 5

What is a liner?

Back 5

Is used to protect the pulp from chemical irritation. It may stimulate secondary dentin formation or release fluoride.

Front 6

What are luting agents?

Back 6

The cements used to lute or glue dental restorations.

Front 7

What does obtundent mean?

Back 7

Means that it reduces the irritation to the pulp.

Front 8

What is a polycarboxylate cement?

Back 8

If formed when zinc oxide powder is mixed with an aqueous solution of poly-acrylic acid.

Front 9

What are resin cements?

Back 9

these are what composite cements are sometimes referred to.

Front 10

What are silicate cements?

Back 10

Is formed when a glass powder is mixed with phosphoric acid.

Front 11

What are temporary cements?

Back 11

are used to retain a temporary restoration while the permanent restoration is being fabricated.

Front 12

What is varnish?

Back 12

Is composed of resins dissolved in a solvent.

Front 13

What is zinc oxide-eugenol (ZOE) cement?

Back 13

Is the result when zinc oxide is mixed with eugenol.

Front 14

What is zinc phosphate cement?

Back 14

Is formed when zinc oxide powder is mixed with phosphoric acid.

Front 15

Name two things that provide pulp protection.

Back 15

*Bases - provides thermal insulation

*Liners - may stimulate secondary dentin formation (calcium hydroxate)

Front 16

What protects the pulp from an irritating base or cement?

Back 16

Varnish - frequently used under amalgams

Front 17

Name three liquids used in dental cements.

Back 17

*Eugenol - Component of oil of cloves

*Phosphoric acid - may be irritating to pulp

*Poly-acrylic acid.

Front 18

Name five kinds of dental cements.

Back 18

1. ZOE (zinc oxide eugenol)

2. Zinc Phosphate

3. Glass Ionomer (and resin modified)

4. Polycarboxylate

5. Composite

Front 19

Name two disadvantages of ZOE cements.

Back 19

1. inadequate strength

2. High solubility

Front 20

Name a disadvantage of zinc phosphate cement.

Back 20

Irritating to the pulp - low PH

Front 21

Why is a cooled glass slab used when mixing zinc phosphate cement?

Back 21

It has an exothermic reaction.

Front 22

What are two advantages glass ionomer cements?

Back 22

1. They bond to tooth structure

2. They release fluoride

Front 23

What is the cement of choice for luting metal or ceramometal crowns?

Back 23

Resin modified glass ionomer

Front 24

Name a major disadvantage of polycarboxylate cement.

Back 24

It is not strong enough

Front 25

Name three advantages of polycarboxylate cement.

Back 25

1. Biocompatable

2. Releases fluoride

3. It bonds to tooth structure.

Front 26

Name a liner that promotes the formation of secondary dentin.

Back 26

Calcium hydroxide (Dycal)

Front 27

What is the composition of Temp Bond, a temporary cement?

Back 27

Zinc Oxide and vegetable oil

Front 28

Which type of cement is available in a single-dose capsule, much like that of a silver amalgam filing material?

Back 28

Glass ionomer

Front 29

Two dental cements that are used for caries control are?

Back 29

1. Glass ionomer

2. ZOE

Front 30

True or False

ZOE has the ability to release fluoride.

Back 30

False

Front 31

Which cement is the most soluble?

Back 31

ZOE

Front 32

When glass ionomer is mixed too slowly, the resulting mix is:

Back 32

Thick

Front 33

Cements are __________ soluble than the overlying restoration.

Back 33

More soluble

Front 34

During mixing, which cement should use as much of the area on a glass slab as possible to reduce the exothermic reaction?

Back 34

Zinc Phosphate

Front 35

Which of the dental materials promotes the formation of secondary dentin?

Back 35

Calcium hydroxide

Front 36

What is a common additive to glass powder, reduces melting temperature, and improves the flow of molten glass?

Back 36

Fluoride

Front 37

The cement of choice for luting ceramic restorations to tooth structure is?

Back 37

Composite

Front 38

The disadvantage, or drawback, of using polycarboxylate cement is?

Back 38

Lack of strength

Front 39

ZOE may be used for what?

Back 39

Temporary restorations

Intermediate bases

Luting temporary crowns.