Question 1

Which component of dental amalgam exists as a liquid in the capsule before trituration?

Accepted Answer

A)  Silver 
B)  Copper 
C)  Tin 
D)  Mercury 
A)  Silver 
B)  Copper 
C)  Tin 
D)  Mercury

Question 2

Tarnish:

Accepted Answer

A)  is a surface phenomenon. 
B)  is the result of chemical reactions that penetrate into the body of the amalgam. 
C)  is equivalent to corrosion. 
D)  eventually leads to failure of the restoration. 
A)  is a surface phenomenon. 
B)  is the result of chemical reactions that penetrate into the body of the amalgam. 
C)  is equivalent to corrosion. 
D)  eventually leads to failure of the restoration.

Question 3

An admixed dental amalgam contains _____ shaped alloy powder particles.

Accepted Answer

A)  only irregularly 
B)  only spherically 
C)  a mixture of irregularly shaped and spherically 
D)  neither irregularly shaped nor spherically 
A)  only irregularly 
B)  only spherically 
C)  a mixture of irregularly shaped and spherically 
D)  neither irregularly shaped nor spherically

Question 4

High-volume evacuation should be used when _____ amalgam restorations.

Accepted Answer

A)  placing. 
B)  polishing. 
C)  removing. 
D)  doing all of the above. 
A)  placing. 
B)  polishing. 
C)  removing. 
D)  doing all of the above.

Question 5

Amalgam should be placed in the cavity preparation by _____ increments.

Accepted Answer

A)  large to small 
B)  consistent size 
C)  small to large 
A)  large to small 
B)  consistent size 
C)  small to large

Question 6

Advantages of dental amalgam when contrasted with direct resin composite include all of the following except:

Accepted Answer

A)  longevity. 
B)  superior esthetics. 
C)  ease of placement in diverse clinical situations. 
D)  marginal integrity in subgingival areas. 
A)  longevity. 
B)  superior esthetics. 
C)  ease of placement in diverse clinical situations. 
D)  marginal integrity in subgingival areas.

Question 7

A freshly mixed mass of amalgam has a puttylike consistency for _____ minutes.

Accepted Answer

A)  1 to 2 
B)  4 to 5 
C)  9 to 10 
D)  20 
A)  1 to 2 
B)  4 to 5 
C)  9 to 10 
D)  20

Question 8

________ mercury vapor is released from dental amalgam per day,as a result of chewing.

Accepted Answer

A)  1 to 2 µg 
B)  2 to 4 wt % 
C)  50% 
D)  No vapor is released 
A)  1 to 2 µg 
B)  2 to 4 wt % 
C)  50% 
D)  No vapor is released

Question 9

The correct order for the manipulation of amalgam is:

Accepted Answer

A)  carving, condensation, mixing, and finishing. 
B)  condensation, finishing, mixing, and carving. 
C)  mixing, condensation, carving, and finishing. 
D)  mixing, finishing, condensation, and carving. 
A)  carving, condensation, mixing, and finishing. 
B)  condensation, finishing, mixing, and carving. 
C)  mixing, condensation, carving, and finishing. 
D)  mixing, finishing, condensation, and carving.

Question 10

Which phase is absent in a high-copper amalgam?

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 11

Under-triturated amalgam is:

Accepted Answer

A)  soupy. 
B)  dull. 
C)  crumbly. 
D)  A and C. 
E)  B and C. 
A)  soupy. 
B)  dull. 
C)  crumbly. 
D)  A and C. 
E)  B and C.

Question 12

Which component of earlier low-copper amalgam caused a significant,unacceptable expansion of amalgam when it was contaminated with moisture during placement?

Accepted Answer

A)  Silver 
B)  Copper 
C)  Tin 
D)  Zinc 
E)  Mercury 
A)  Silver 
B)  Copper 
C)  Tin 
D)  Zinc 
E)  Mercury

Question 13

Amalgam scrap should be:

Accepted Answer

A)  disposed of in the trash with other daily refuse. 
B)  flushed down the drain with ample water. 
C)  stored in a sealed container in the refrigerator. 
D)  stored in a sealed container containing x-ray fixer or another reducing agent. 
E)  stored in a sealed container containing x-ray developer. 
A)  disposed of in the trash with other daily refuse. 
B)  flushed down the drain with ample water. 
C)  stored in a sealed container in the refrigerator. 
D)  stored in a sealed container containing x-ray fixer or another reducing agent. 
E)  stored in a sealed container containing x-ray developer.

Question 14

Which of the following statements is true of admixed amalgam in contrast with spherical amalgam? Admixed amalgams:

Accepted Answer

A)  contain only irregularly shaped particles, not spherically shaped particles. 
B)  require more condensation force than spherical amalgams. 
C)  require less mercury than spherical amalgams. 
D)  set somewhat faster than spherical amalgams. 
A)  contain only irregularly shaped particles, not spherically shaped particles. 
B)  require more condensation force than spherical amalgams. 
C)  require less mercury than spherical amalgams. 
D)  set somewhat faster than spherical amalgams.

Question 15

Ultrasonic condensers are discouraged for condensation of amalgam because they:

Accepted Answer

A)  increase the evaporation of mercury from the setting amalgam. 
B)  provide insufficient condensation force. 
C)  apply excessive condensation forces. 
D)  traumatize the dental pulp. 
A)  increase the evaporation of mercury from the setting amalgam. 
B)  provide insufficient condensation force. 
C)  apply excessive condensation forces. 
D)  traumatize the dental pulp.

Question 16

Which of the following is a component of good mercury hygiene?

Accepted Answer

A)  Handling it only with gloves on 
B)  Using a squeeze cloth to remove excess mercury 
C)  Using premixed, sealed capsules 
D)  Polishing using a dry technique 
A)  Handling it only with gloves on 
B)  Using a squeeze cloth to remove excess mercury 
C)  Using premixed, sealed capsules 
D)  Polishing using a dry technique

Question 17

High-copper amalgam has about _____ wt % copper.

Accepted Answer

A)  3 
B)  5 to 10 
C)  13 to 30 
D)  30 to 40 
E)  75 
A)  3 
B)  5 to 10 
C)  13 to 30 
D)  30 to 40 
E)  75

Question 18

Mercury is liquid at room temperature.It is one of two liquid metallic elements on the periodic table.

Accepted Answer

A)  Statement 1 is correct; statement 2 is incorrect. 
B)  Statement 1 is correct; statement 2 is correct. 
C)  Statement 1 is incorrect; statement 2 is incorrect. 
D)  Statement 1 is incorrect; statement 2 is correct. 
A)  Statement 1 is correct; statement 2 is incorrect. 
B)  Statement 1 is correct; statement 2 is correct. 
C)  Statement 1 is incorrect; statement 2 is incorrect. 
D)  Statement 1 is incorrect; statement 2 is correct.

Which component of dental amalgam exists as a liquid in the capsule before trituration?

Tarnish:

An admixed dental amalgam contains _____ shaped alloy powder particles.

High-volume evacuation should be used when _____ amalgam restorations.

Amalgam should be placed in the cavity preparation by _____ increments.

Advantages of dental amalgam when contrasted with direct resin composite include all of the following except:

A freshly mixed mass of amalgam has a puttylike consistency for _____ minutes.

________ mercury vapor is released from dental amalgam per day,as a result of chewing.

The correct order for the manipulation of amalgam is:

Which phase is absent in a high-copper amalgam?

Under-triturated amalgam is:

Which component of earlier low-copper amalgam caused a significant,unacceptable expansion of amalgam when it was contaminated with moisture during placement?

Amalgam scrap should be:

Which of the following statements is true of admixed amalgam in contrast with spherical amalgam? Admixed amalgams:

Ultrasonic condensers are discouraged for condensation of amalgam because they:

Which of the following is a component of good mercury hygiene?

High-copper amalgam has about _____ wt % copper.

Mercury is liquid at room temperature.It is one of two liquid metallic elements on the periodic table.

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Finishing, polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, wrought Alloys, and Solders

Casting and Soldering

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

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Exam 5: Dental Amalgam

Which component of dental amalgam exists as a liquid in the capsule before trituration?

Tarnish:

An admixed dental amalgam contains _____ shaped alloy powder particles.

High-volume evacuation should be used when _____ amalgam restorations.

Amalgam should be placed in the cavity preparation by _____ increments.

Advantages of dental amalgam when contrasted with direct resin composite include all of the following except:

A freshly mixed mass of amalgam has a puttylike consistency for _____ minutes.

________ mercury vapor is released from dental amalgam per day,as a result of chewing.

The correct order for the manipulation of amalgam is:

Which phase is absent in a high-copper amalgam?

Under-triturated amalgam is:

Which component of earlier low-copper amalgam caused a significant,unacceptable expansion of amalgam when it was contaminated with moisture during placement?

Amalgam scrap should be:

Which of the following statements is true of admixed amalgam in contrast with spherical amalgam? Admixed amalgams:

Ultrasonic condensers are discouraged for condensation of amalgam because they:

Which of the following is a component of good mercury hygiene?

High-copper amalgam has about _____ wt % copper.

Mercury is liquid at room temperature.It is one of two liquid metallic elements on the periodic table.

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Finishing, polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, wrought Alloys, and Solders

Casting and Soldering

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters