Question 1

Which of the following is incorrect regarding spherical alloy?

Accepted Answer

A)  It is easy to condense. 
B)  It sets faster than admixed amalgam. 
C)  It requires more mercury than admixed amalgam. 
D)  It makes better proximal contacts than admixed amalgam. 
A)  It is easy to condense. 
B)  It sets faster than admixed amalgam. 
C)  It requires more mercury than admixed amalgam. 
D)  It makes better proximal contacts than admixed amalgam. A

Question 2

Why are ultrasonic condensers discouraged for condensation of amalgam?

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 A

Question 3

Which of the following is not an advantage of dental amalgam when contrasted with direct resin composite?

Accepted Answer

A)  Longevity 
B)  Superior esthetics 
C)  Marginal integrity in subgingival areas 
D)  Ease of placement in diverse clinical situations 
A)  Longevity 
B)  Superior esthetics 
C)  Marginal integrity in subgingival areas 
D)  Ease of placement in diverse clinical situations B

Question 4

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

Question 5

When should high-volume evacuation be used with dental amalgam?

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 6

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 7

Why is it important to use water when polishing an amalgam restoration?

Accepted Answer

A)  Assures integrity of the enamel 
B)  Produces a high glossy finish 
C)  So the tooth won't overheat 
D)  Insures smooth margins 
A)  Assures integrity of the enamel 
B)  Produces a high glossy finish 
C)  So the tooth won't overheat 
D)  Insures smooth margins

Question 8

Which phase is absent in a high-copper amalgam?

Accepted Answer

A)  ( $ \gamma $ ) 
B)  $ \gamma $ S1U1B11S1U1B0 
C)  ( $ \eta $ ) 
D) $ \gamma $ S1U1B12S1U1B0 
A)  ( $ \gamma $ ) 
B)  $ \gamma $ S1U1B11S1U1B0 
C)  ( $ \eta $ ) 
D) $ \gamma $ S1U1B12S1U1B0

Question 9

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 10

Identify the three types of mercury and explain how each is acquired.

Accepted Answer

Mercury occurs in three forms: elemental

Question 11

An admixed dental amalgam contains _______________ shaped alloy powder particles.

Accepted Answer

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

Question 12

How should amalgam scrap be handled?

Accepted Answer

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

Question 13

Which of the following is the most likely route of entry for mercury into the patient and dental personnel during the manipulation of amalgam?

Accepted Answer

A)  Absorption in the gut 
B)  Contact through skin 
C)  The lungs as a vapor 
D)  Intraoral absorption 
A)  Absorption in the gut 
B)  Contact through skin 
C)  The lungs as a vapor 
D)  Intraoral absorption

Question 14

Compare and contrast expansion and contraction of a newly mixed amalgam.

Accepted Answer

Ideally, a freshly mixed amalgam would n

Question 15

In its reacted state, little mercury is released from an amalgam. Little free mercury is available to be released from a set amalgam.

Accepted Answer

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

Question 16

How will the mixture appear if amalgam is over-triturated?

Accepted Answer

A)  Puttylike consistency 
B)  Dry, crumbly mix 
C)  Wet, soupy mix 
D)  Hard ball 
A)  Puttylike consistency 
B)  Dry, crumbly mix 
C)  Wet, soupy mix 
D)  Hard ball

Question 17

High-copper amalgams have __________________ than low-copper amalgams.

Accepted Answer

A)  more corrosion 
B)  higher strength 
C)  better longevity 
D)  A and C are correct. 
E)  B and C are correct. 
A)  more corrosion 
B)  higher strength 
C)  better longevity 
D)  A and C are correct. 
E)  B and C are correct.

Question 18

Which of the following is incorrect regarding admixed alloy?

Accepted Answer

A)  It makes better proximal contacts. 
B)  It is a mixture of particles. 
C)  It is easy to condense. 
D)  It is easier to carve. 
A)  It makes better proximal contacts. 
B)  It is a mixture of particles. 
C)  It is easy to condense. 
D)  It is easier to carve.

Question 19

Elimination of which compound in the gamma-2 phase of amalgam setting increases clinical longevity in today's high-copper amalgam restorations?

Accepted Answer

A)  Silver-tin 
B)  Copper-tin 
C)  Mercury-tin 
D)  Silver-copper 
A)  Silver-tin 
B)  Copper-tin 
C)  Mercury-tin 
D)  Silver-copper

Question 20

What is tarnish?

Accepted Answer

A)  A surface phenomenon 
B)  Equivalent to corrosion 
C)  A destructive process that eventually leads to failure of the restoration 
D)  The result of chemical reactions that penetrate into the body of the amalgam 
A)  A surface phenomenon 
B)  Equivalent to corrosion 
C)  A destructive process that eventually leads to failure of the restoration 
D)  The result of chemical reactions that penetrate into the body of the amalgam

Which of the following is incorrect regarding spherical alloy?

Why are ultrasonic condensers discouraged for condensation of amalgam?

Which of the following is not an advantage of dental amalgam when contrasted with direct resin composite?

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

When should high-volume evacuation be used with dental amalgam?

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

Why is it important to use water when polishing an amalgam restoration?

Which phase is absent in a high-copper amalgam?

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

Identify the three types of mercury and explain how each is acquired.

An admixed dental amalgam contains _______________ shaped alloy powder particles.

How should amalgam scrap be handled?

Which of the following is the most likely route of entry for mercury into the patient and dental personnel during the manipulation of amalgam?

Compare and contrast expansion and contraction of a newly mixed amalgam.

In its reacted state, little mercury is released from an amalgam. Little free mercury is available to be released from a set amalgam.

How will the mixture appear if amalgam is over-triturated?

High-copper amalgams have __________________ than low-copper amalgams.

Which of the following is incorrect regarding admixed alloy?

Elimination of which compound in the gamma-2 phase of amalgam setting increases clinical longevity in today's high-copper amalgam restorations?

What is tarnish?

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, Soldering, and Welding

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters

Exam 5: Dental Amalgam

Which of the following is incorrect regarding spherical alloy?

Why are ultrasonic condensers discouraged for condensation of amalgam?

Which of the following is not an advantage of dental amalgam when contrasted with direct resin composite?

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

When should high-volume evacuation be used with dental amalgam?

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

Why is it important to use water when polishing an amalgam restoration?

Which phase is absent in a high-copper amalgam?

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

Identify the three types of mercury and explain how each is acquired.

An admixed dental amalgam contains _______________ shaped alloy powder particles.

How should amalgam scrap be handled?

Which of the following is the most likely route of entry for mercury into the patient and dental personnel during the manipulation of amalgam?

Compare and contrast expansion and contraction of a newly mixed amalgam.

In its reacted state, little mercury is released from an amalgam. Little free mercury is available to be released from a set amalgam.

How will the mixture appear if amalgam is over-triturated?

High-copper amalgams have __________________ than low-copper amalgams.

Which of the following is incorrect regarding admixed alloy?

Elimination of which compound in the gamma-2 phase of amalgam setting increases clinical longevity in today's high-copper amalgam restorations?

What is tarnish?

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, Soldering, and Welding

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters