Chapter 9: Glass Ionomers, Compomers, and Bioactive Materials

1.) How do compomers differ from traditional glass ionomer?

a) not as strong as GI

b) does not bond well to tooth structure

c) fluoride release is comparable

d) varnish or coating finish necessary

a) not as strong as GI

b) does not bond well to tooth structure

c) fluoride release is comparable

d) varnish or coating finish necessary

2.) How do hybrid ionomers differ from glass ionomers?

a) resin makes them stronger

b) they are more opaque

c) better polishability

d) all of the above are correct

e) A and C are correct

a) resin makes them stronger

b) they are more opaque

c) better polishability

d) all of the above are correct

e) A and C are correct

3.) Glass ionomer cements used for pit and fissure sealants have been formulated to have a very high fluoride content. Glass ionomer cement used for pit and fissure sealants penetrate the fissures as well as resin sealants.

a) Both statements are correct.

b) Neither statement is correct.

c) Statement 1 is correct; statement 2 is incorrect.

d) Statement 1 is incorrect; statement 2 is correct.

a) Both statements are correct.

b) Neither statement is correct.

c) Statement 1 is correct; statement 2 is incorrect.

d) Statement 1 is incorrect; statement 2 is correct.

4.) How are glass ionomer cements supplied for use?

1. Hand-mixed powder and liquid

2. Encapsulated powder and liquid

3. Two-paste system

4. Premixed carpule

a) 1, 2, 3, 4

b) 1, 2, 3

c) 1, 2

d) 1

a) 1, 2, 3, 4

b) 1, 2, 3

c) 1, 2

d) 1

5.) Which procedures can glass ionomers be used for?

a) sealants

b) cements

c) restorations

d) all of the options are correct

a) sealants

b) cements

c) restorations

d) all of the options are correct

6.) How does preparing a tooth for a glass ionomer differ from preparing a tooth for a composite resin?

a) rinse and dry thoroughly

b) it is not necessary to remove the smear layer

c) shorten the phosphoric etch time to 10 seconds

d) etch with 10% polyacrylic acid for 10 seconds

a) rinse and dry thoroughly

b) it is not necessary to remove the smear layer

c) shorten the phosphoric etch time to 10 seconds

d) etch with 10% polyacrylic acid for 10 seconds

7.) Which type of restorative material is used for the atraumatic restorative treatment (ART) of caries?

a) compomer

b) conventional composite resin

c) hybrid (resin-modified) ionomer

d) high-viscosity glass ionomer composite

a) compomer

b) conventional composite resin

c) hybrid (resin-modified) ionomer

d) high-viscosity glass ionomer composite

8.) Which type of glass ionomer cement is used for liners and bases?

a) Type I

b) Type II

c) Type III

d) Type IV

a) Type I

b) Type II

c) Type III

d) Type IV

9.) Which is correct regarding the use of glass ionomer cements when treating root caries?

a) they bond well and seal to the root better than composite resin

b) they are less soluble and stronger than composite resin

c) they do not wear as fast as composite resins do

d) they are contraindicated for root caries

a) they bond well and seal to the root better than composite resin

b) they are less soluble and stronger than composite resin

c) they do not wear as fast as composite resins do

d) they are contraindicated for root caries

10.) Which term describes the technique in which glass ionomer is used in combination with another restorative material to gain the best properties of each material?

a) overlay

b) veneer

c) layering

d) lamination

a) overlay

b) veneer

c) layering

d) lamination

11.) Which of the following best describes nano-ionomer materials?

1. Nano-ionomers are silane treated particles

2. They are chemical cured

3. They are a two-paste system

4. superior color match

a) 1, 2, 3, 4

b) 1, 2, 3

c) 1, 3, 4

d) 3, 4

a) 1, 2, 3, 4

b) 1, 2, 3

c) 1, 3, 4

d) 3, 4

12.) Which of the following is true regarding finishing and polishing glass ionomer cements?

1. they can be contoured approximately 10 minutes after the initial set

2. Finishing is accomplished using a carbide finishing bur

3. a protective varnish is usually used as the final step

4. water spray is used to keep the tooth cool

a) 1, 2, 3, 4

b) 1, 2, 3

c) 2, 3, 4

d) 1, 3

a) 1, 2, 3, 4

b) 1, 2, 3

c) 2, 3, 4

d) 1, 3

13.) What is the purpose of bioactive dental materials?

a) They form an apatite-like surface when exposed to saliva.

b) They do not require bonding like traditional glass ionomer.

c) Bioactive materials interact with cadaver tissue used for bone grafts.

d) Their physical strength and other properties are superior to glass ionomer.

a) They form an apatite-like surface when exposed to saliva.

b) They do not require bonding like traditional glass ionomer.

c) Bioactive materials interact with cadaver tissue used for bone grafts.

d) Their physical strength and other properties are superior to glass ionomer.

14.) Which of the following is correct about giomers?

a) they release less fluoride than a glass ionomer

b) they are recharged with fluoride from toothpaste or mouth rinse

c) giomers are filled with a resin component

d) all of the above are correct

e) only B and C are correct

a) they release less fluoride than a glass ionomer

b) they are recharged with fluoride from toothpaste or mouth rinse

c) giomers are filled with a resin component

d) all of the above are correct

e) only B and C are correct