Dental Materials Ch. 7 Flashcards Preview

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Flashcards in Dental Materials Ch. 7 Deck (12)
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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

(d) Glass ionomer

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

(e) Glass ionomer and ZOE

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.

(a) It releases fluoride.

4

Which of the following cements is most soluble?
(a) Glass ionomer
(b) Zinc phosphate
(c) ZOE
(d) Polycarboxylate

(c) ZOE

5

When glass ionomer is mixed too slowly, the resulting mix is:
(a) Thin
(b) Thick
(c) Lumpy
(d) Granular

(b) Thick

6

Cements are _____________ soluble than the overlying restoration.
(a) More
(b) Less
(c) Equally
(d) None of the above

(a) More

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

(d) Zinc phosphate

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

(c) Calcium hydroxide

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

(b) Fluoride

10

The cement of choice for luting ceramic restorations to tooth structure is
(a) ZOE
(b) Zinc phosphate
(c) Polycarboxylate
(d) Composite

(d) Composite

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

(a) Lack of strength

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

(g) a, b, and d