Question 1

Which cement should be removed with alcohol or orange solvent once it has set?

Accepted Answer

A)   Glass ionomer
B)   Zinc phosphate
C)   Zinc oxide eugenol
D)   Zinc polycarboxylateE) A) and B)
F) A) and C)

Question 2

What is the advantage of using glass ionomer cement?

Accepted Answer

A)   Fluoride ion
B)   Low strength
C)   Low solubility
D)   Sedative effectE) All of the above
F) A) and B)

Question 3

List the advantages and disadvantages of zinc oxide eugenol,zinc phosphate,zinc polycarboxylate,traditional glass ionomer,hybrid ionomer,and resin-based cements.

Accepted Answer

Zinc oxide eugenol cement
•Advantages-Wi...

Question 4

Which type of cement is recommended for cementing thicker ceramic restorations where light would not penetrate adequately?

Accepted Answer

A)   Sedative
B)   Dual-cure
C)   Provisional
D)   Chemical-cureE) A) and B)
F) A) and C)

Question 5

Which of the following cements should not be used under composites or as temporary cement before final cementation with hybrid glass ionomer or resin cements?

Accepted Answer

A)   Glass ionomer cement
B)   Zinc phosphate cement
C)   Zinc oxide eugenol cement
D)   Zinc polycarboxylate cementE) A) and C)
F) A) and D)

Question 6

Which of the following is true concerning the properties of zinc polycarboxylate cements?

Accepted Answer

A)   The polyacrylic acid in zinc polycarboxylate cements produces significant pulpal irritation and the pulp must be protected.
B)   The viscosity of zinc polycarboxylate cements is lower than that of most other cements.
C)   These cements have higher compressive strength and lower solubility when compared with other cements.
D)   The retention of polycarboxylate cements is both chemical and mechanical,making these cements desirable for retention of indirect restorations.E) A) and B)
F) B) and D)

Question 7

Expansion of ______ cement as it absorbs moisture after setting is a concern,making the cement less desirable for cementation of all-ceramic indirect restorations because of the risk of fracture.

Accepted Answer

A)   glass ionomer
B)   zinc phosphate
C)   zinc polycarboxylate
D)   resin-modified glass ionomerE) A) and B)
F) B) and C)

Question 8

Match the items with the correct description below.
-Varnish

Accepted Answer

A)  A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping
B)  A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage
C)  A thick layer of cement used to protect the tooth from chemical and thermal irritation
D)  Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base
E)  Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for lutingF) C) and D)
G) B) and E)

Question 9

When is zinc polycarboxylate cement no longer usable?

Accepted Answer

A)   Has a creamy appearance
B)   Loses its gloss and becomes stringy
C)   Is mixed for longer than 10 seconds
D)   Becomes oily on the surface because of the oxygen-inhibited layerE) B) and C)
F) A) and D)

Question 10

What is the primary purpose of calcium hydroxide?

Accepted Answer

A)   Promote reparative dentin
B)   Act as a protective barrier
C)   Insulate the pulp cavity
D)   Sedate the pulp tissueE) A) and B)
F) B) and D)

Question 11

For which of the following cements is the powder dispensed in four to six portions on one end of a glass slab,and then incorporated in small increments into the liquid,with each increment mixed for 10 to 15 seconds?

Accepted Answer

A)   Zinc polycarboxylate cement
B)   Zinc oxide eugenol cement
C)   Zinc phosphate cement
D)   Glass ionomer cementE) A) and B)
F) None of the above

Question 12

Which of the following cements forms a chemical bond to tooth structure?
1) Zinc oxide eugenol
2) Zinc phosphate
3) Zinc polycarboxylate
4) Glass ionomer

Accepted Answer

A)   1,2,3,4
B)   2,3,4
C)   2,3
D)   3,4E) A) and D)
F) All of the above

Question 13

Which of the following cements is highest in mechanical strength?

Accepted Answer

A)   Resin cement
B)   Hybrid ionomer
C)   Zinc polycarboxylate
D)   Glass ionomer cementE) A) and D)
F) B) and C) A

Question 14

Match the items with the correct description below.
-Primary consistency

Accepted Answer

A)  A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping
B)  A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage
C)  A thick layer of cement used to protect the tooth from chemical and thermal irritation
D)  Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base
E)  Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for lutingF) B) and E)
G) A) and B) E

Question 15

Match the items with the correct description below.
-Liner/Low-strength base

Accepted Answer

A)  A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping
B)  A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage
C)  A thick layer of cement used to protect the tooth from chemical and thermal irritation
D)  Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base
E)  Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for lutingF) B) and D)
G) C) and D) A

Question 16

Match the items with the correct description below.
-Secondary consistency

Accepted Answer

A)  A thin layer of material placed to protect the tooth from the components of dental materials and microleakage,stimulate reparative dentin,or act as a pulp capping
B)  A thin layer placed on the floor and walls of the preparation to seal tubules and minimize microleakage
C)  A thick layer of cement used to protect the tooth from chemical and thermal irritation
D)  Thick,putty-like,condensable material that can be rolled into a ball or rope,suitable for use as a base
E)  Less viscous,flows easily,can be drawn to a 1-inch string with a spatula,suitable for lutingF) B) and E)
G) None of the above

Question 17

______ incorporation of zinc phosphate powder into the liquid and mixing over a ______ area of a cooled glass slab are recommended because the chemical reaction is exothermic and produces heat.

Accepted Answer

A)   Bulk;large
B)   Bulk;small
C)   Incremental;large
D)   Incremental;smallE) A) and B)
F) A) and C)

Question 18

In most cases,cements have ______ strength and ______ solubility when compared with other restorative materials.

Accepted Answer

A)   superior;high
B)   superior;low
C)   inferior;high
D)   inferior;lowE) A) and B)
F) A) and C)

Question 19

Which cement is recommended for metal-free restoration?

Accepted Answer

A)   Glass ionomer cement
B)   Resin-based cement
C)   Hybrid ionomer cement
D)   Resin-modified glass ionomer cementE) A) and D)
F) B) and C)

Question 20

The composition of hybrid ionomer cement is similar to that of glass ionomer cement,but it is modified with the addition what?

Accepted Answer

A)   Zinc
B)   Resin
C)   Fluoride
D)   Orange oilE) B) and C)
F) A) and D)

Exam 14: Dental Cement

Which cement should be removed with alcohol or orange solvent once it has set?

Correct AnswerverifiedShow Answer

What is the advantage of using glass ionomer cement?

Correct AnswerverifiedShow Answer

List the advantages and disadvantages of zinc oxide eugenol,zinc phosphate,zinc polycarboxylate,traditional glass ionomer,hybrid ionomer,and resin-based cements.

Correct AnswerverifiedZinc oxide eugenol cement•Advantages-Wi...View AnswerShow Answer

Which type of cement is recommended for cementing thicker ceramic restorations where light would not penetrate adequately?

Correct AnswerverifiedShow Answer

Which of the following cements should not be used under composites or as temporary cement before final cementation with hybrid glass ionomer or resin cements?

Correct AnswerverifiedShow Answer

Which of the following is true concerning the properties of zinc polycarboxylate cements?

Correct AnswerverifiedShow Answer

Expansion of ______ cement as it absorbs moisture after setting is a concern,making the cement less desirable for cementation of all-ceramic indirect restorations because of the risk of fracture.

Correct AnswerverifiedShow Answer

Match the items with the correct description below. -Varnish

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When is zinc polycarboxylate cement no longer usable?

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What is the primary purpose of calcium hydroxide?

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For which of the following cements is the powder dispensed in four to six portions on one end of a glass slab,and then incorporated in small increments into the liquid,with each increment mixed for 10 to 15 seconds?

Correct AnswerverifiedShow Answer

Which of the following cements forms a chemical bond to tooth structure? 1) Zinc oxide eugenol 2) Zinc phosphate 3) Zinc polycarboxylate 4) Glass ionomer

Correct AnswerverifiedShow Answer

Which of the following cements is highest in mechanical strength?

Correct AnswerverifiedA

Match the items with the correct description below. -Primary consistency

Correct AnswerverifiedE

Match the items with the correct description below. -Liner/Low-strength base

Correct AnswerverifiedA

Match the items with the correct description below. -Secondary consistency

Correct AnswerverifiedShow Answer

______ incorporation of zinc phosphate powder into the liquid and mixing over a ______ area of a cooled glass slab are recommended because the chemical reaction is exothermic and produces heat.

Correct AnswerverifiedShow Answer

In most cases,cements have ______ strength and ______ solubility when compared with other restorative materials.

Correct AnswerverifiedShow Answer

Which cement is recommended for metal-free restoration?

Correct AnswerverifiedShow Answer

The composition of hybrid ionomer cement is similar to that of glass ionomer cement,but it is modified with the addition what?

Correct AnswerverifiedShow Answer

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Zinc oxide eugenol cement
•Advantages-Wi...
View Answer

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A

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E

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A

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incorporation of zinc phosphate powder into the liquid and mixing over a area of a cooled glass slab are recommended because the chemical reaction is exothermic and produces heat.

Correct Answer
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In most cases,cements have strength and solubility when compared with other restorative materials.

Correct Answer
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