Question 1

To ensure an accurate ratio of alloy and mercury,you should:

Accepted Answer

A)  use premeasured capsules.
B)  measure accurately.
C)  reuse capsules.
D)  do all of the above.E) C) and D)
F) A) and D)

Question 2

Which is not true of microleakage?

Accepted Answer

A)  It is caused by different rates of expansion and contraction of tooth structure and restorative materials.
B)  It is the minute space between the restoration and tooth structure.
C)  It occurs rarely.
D)  It allows fluid and debris to enter between the restoration and tooth.E) B) and C)
F) A) and B)

Question 3

The purpose of _________ is to pack the amalgam in the cavity preparation.

Accepted Answer

A)  amalgamation
B)  condensing
C)  carving
D)  triturationE) C) and D)
F) B) and C)

Question 4

If a tooth has _____,an intermediate restorative material should be selected.

Accepted Answer

A)  lost a restoration
B)  a missing cusp
C)  been prepared for a cast restoration
D)  been prepared for a porcelain veneerE) B) and D)
F) None of the above

Question 5

The ADA and the National Institute of Health-Nations Administration _____ the use of amalgam as a posterior restorative material.

Accepted Answer

A)  discourages
B)  supports
C)  forbids
D)  has no opinion onE) A) and D)
F) B) and C)

Question 6

For adhesion to take place,a _______ film thickness is desired.

Accepted Answer

A)  thick
B)  thin
C)  medium
D)  it doesn't matterE) B) and D)
F) All of the above

Question 7

Which of the following are advantages to using glass ionomer as a restorative material?

Accepted Answer

A)  Glass ionomer has the ability to bind to teeth mechanically, rather than chemically.
B)  Glass ionomer releases fluoride after their final setting.
C)  Loss of gloss indicates a proper mix of glass ionomer material.
D)  There is no need to avoid contact with water during the mixing procedure for glass ionomer.E) None of the above
F) B) and C) B

Question 8

A liquid with high viscosity _____ flow easily and _____ effective in wetting a surface.

Accepted Answer

A)  does; is
B)  does; is not
C)  does not; is
D)  does not; is notE) A) and B)
F) A) and C)

Question 9

One of the fastest and most cost-effective ways of restoring the esthetic appearance of teeth is:

Accepted Answer

A)  bleaching.
B)  porcelain veneers.
C)  composite veneers.
D)  ceramic crowns.E) A) and D)
F) B) and C) A

Question 10

Criteria for new restorative materials include that the material is:

Accepted Answer

A)  able to protect the tooth and tissues of the oral cavity.
B)  easily formed and placed restoring comfort, function, and contour.
C)  not capable of irritating tissues or being poisonous.
D)  all of the above are criteria for new restorative materials.E) A) and D)
F) All of the above D

Question 11

_____ is a noble metal used for cast restorations in dentistry.

Accepted Answer

A)  Palladium
B)  Iron
C)  Tin
D)  ZincE) C) and D)
F) All of the above

Question 12

_____ is added to dental amalgam alloy powder to suppress oxidation.

Accepted Answer

A)  Silver
B)  Tin
C)  Copper
D)  ZincE) B) and D)
F) All of the above

Question 13

Retention holds a material in place and seals the structures together.

Accepted Answer

A) True 
 B)False

Question 14

The silver filling material used for over 150 years to restore primary and permanent teeth is called:

Accepted Answer

A)  amalgam.
B)  composite.
C)  glass ionomer.
D)  acrylic resin.E) A) and C)
F) All of the above

Question 15

The conventional or traditional composites,which contain the largest filler particles and provide the greatest strength,are known as _____ composites.

Accepted Answer

A)  microfilled
B)  midfilled
C)  hybrid
D)  macrofilledE) B) and D)
F) B) and C)

Question 16

Which is not true of in-office tooth whitening?

Accepted Answer

A)  It can usually be done in one treatment.
B)  It requires a light-accelerated bleach.
C)  It requires multiple treatments.
D)  It involves isolation of soft tissue.E) All of the above
F) A) and D)

Question 17

The curing process in which it is the most critical that the materials are mixed and placed within the working and setting times is with ________ materials.

Accepted Answer

A)  auto-cured
B)  light-cured
C)  dual-cured
D)  none is more critical than another.E) B) and C)
F) A) and B)

Question 18

The resin matrix component of composite is dimethacrylate,a fluid-like material also referred to as:

Accepted Answer

A)  quartz.
B)  silica.
C)  IRM.
D)  BIS-GMA.E) A) and B)
F) All of the above

Question 19

Dental restorative materials that are applied,while pliable,to a tooth or teeth and can be adapted,carved,and finished are classified as:

Accepted Answer

A)  indirect restorations.
B)  direct restorations.
C)  crowns and bridges.
D)  implants.E) A) and B)
F) A) and C)

Question 20

In most states,an expanded-functions dental assistant may perform which of the following functions?

Accepted Answer

A)  Placing IRM
B)  Using a high-speed handpiece for cavity preparation
C)  Applying a provisional restoration
D)  Both a and cE) B) and D)
F) None of the above

Exam 43: Restorative and Esthetic Dental Materials

To ensure an accurate ratio of alloy and mercury,you should:

Correct AnswerverifiedShow Answer

Which is not true of microleakage?

Correct AnswerverifiedShow Answer

The purpose of _________ is to pack the amalgam in the cavity preparation.

Correct AnswerverifiedShow Answer

If a tooth has _____,an intermediate restorative material should be selected.

Correct AnswerverifiedShow Answer

The ADA and the National Institute of Health-Nations Administration _____ the use of amalgam as a posterior restorative material.

Correct AnswerverifiedShow Answer

For adhesion to take place,a _______ film thickness is desired.

Correct AnswerverifiedShow Answer

Which of the following are advantages to using glass ionomer as a restorative material?

Correct AnswerverifiedB

A liquid with high viscosity _____ flow easily and _____ effective in wetting a surface.

Correct AnswerverifiedShow Answer

One of the fastest and most cost-effective ways of restoring the esthetic appearance of teeth is:

Correct AnswerverifiedA

Criteria for new restorative materials include that the material is:

Correct AnswerverifiedD

_____ is a noble metal used for cast restorations in dentistry.

Correct AnswerverifiedShow Answer

_____ is added to dental amalgam alloy powder to suppress oxidation.

Correct AnswerverifiedShow Answer

Retention holds a material in place and seals the structures together.

Correct AnswerverifiedShow Answer

The silver filling material used for over 150 years to restore primary and permanent teeth is called:

Correct AnswerverifiedShow Answer

The conventional or traditional composites,which contain the largest filler particles and provide the greatest strength,are known as _____ composites.

Correct AnswerverifiedShow Answer

Which is not true of in-office tooth whitening?

Correct AnswerverifiedShow Answer

The curing process in which it is the most critical that the materials are mixed and placed within the working and setting times is with ________ materials.

Correct AnswerverifiedShow Answer

The resin matrix component of composite is dimethacrylate,a fluid-like material also referred to as:

Correct AnswerverifiedShow Answer

Dental restorative materials that are applied,while pliable,to a tooth or teeth and can be adapted,carved,and finished are classified as:

Correct AnswerverifiedShow Answer

In most states,an expanded-functions dental assistant may perform which of the following functions?

Correct AnswerverifiedShow Answer

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B

A liquid with high viscosity _ flow easily and _ effective in wetting a surface.

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A

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D

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