Dental Materials Ch. 7

Question 1

Which of the following cements are available in a single-dose capsule, much like that of silver amalgam filling material?

(a) Polycarboxylate
(b) Silicate
(c) ZOE
(d) Glass ionomer
(e) Zinc phosphate

Answer 1

(d) Glass ionomer

Question 2

Two dental cements that are used for caries control are:

(a) ZOE and zinc phosphate
(b) ZOE and polycarboxylate
(c) Zinc phosphate and glass ionomer
(d) Glass ionomer and polycarboxylate
(e) Glass ionomer and ZOE

Answer 2

(e) Glass ionomer and ZOE

Question 3

All of the following are true for ZOE EXCEPT:

(a) It releases fluoride.
(b) It lacks strength.
(c) It is an obtundent material.
(d) It protects the pulp.

Answer 3

(a) It releases fluoride.

Question 4

Which of the following cements is most soluble?

(a) Glass ionomer
(b) Zinc phosphate
(c) ZOE
(d) Polycarboxylate

Answer 4

(c) ZOE

Question 5

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

(a) Thin
(b) Thick
(c) Lumpy
(d) Granular

Answer 5

(b) Thick

Question 6

Cements are _____________ soluble than the overlying restoration.

(a) More
(b) Less
(c) Equally
(d) None of the above

Answer 6

(a) More

Question 7

During mixing, which of the following cements should use as much of the area on the slab as possible to reduce the exothermic reaction?

(a) Polycarboxylate
(b) Glass ionomer
(c) ZOE
(d) Zinc phosphate

Answer 7

(d) Zinc phosphate

Question 8

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

(a) Composite cements
(b) Silicate cement
(c) Calcium hydroxide
(d) Temporary cements

Answer 8

(c) Calcium hydroxide

Question 9

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

(a) Quartz
(b) Fluoride
(c) Silicate
(d) Oxides

Answer 9

(b) Fluoride

Question 10

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

(a) ZOE
(b) Zinc phosphate
(c) Polycarboxylate
(d) Composite

Answer 10

(d) Composite

Question 11

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

(a) Lack of strength
(b) Ability to bond to tooth structure
(c) Biocompatibility
(d) Lack of sufficient clinical data for long term use

Answer 11

(a) Lack of strength

Question 12

ZOE may be used for the following:

(a) Temporary restorations
(b) Intermediate bases
(c) Permanent restorations
(d) Luting temporary crowns
(e) Luting permanent crowns
(f) a, b, and c
(g) a, b, and d
(h) a and d only

Answer 12

(g) a, b, and d