Question 1

The sum of ________________________ determines the overall dimensional change of an amalgam restoration.

Accepted Answer

A)  compressive strength plus condensation 
B)  contraction and expansion during setting 
C)  compressive strength plus tensile strength 
D)  the amount of tarnish and corrosion produced 
A)  compressive strength plus condensation 
B)  contraction and expansion during setting 
C)  compressive strength plus tensile strength 
D)  the amount of tarnish and corrosion produced

Question 2

What is the correct order for the manipulation of amalgam?

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 3

Which of the following statement(s) is(are) true of the property of creep for amalgam restorations?

Accepted Answer

A)  High-copper amalgams have values of creep far above old low-copper amalgams. 
B)  It is associated with the breakdown of marginal integrity. 
C)  The ANSI/ADA requires that creep be less than 3%. 
D)  A, B, and C are true. 
E)  B and C are true. 
A)  High-copper amalgams have values of creep far above old low-copper amalgams. 
B)  It is associated with the breakdown of marginal integrity. 
C)  The ANSI/ADA requires that creep be less than 3%. 
D)  A, B, and C are true. 
E)  B and C are true.

Question 4

On average, how much copper is in today's dental alloy?

Accepted Answer

A)  4% 
B)  10% 
C)  20% 
D)  50% 
A)  4% 
B)  10% 
C)  20% 
D)  50%

Question 5

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)  15 
A)  1 to 2 
B)  4 to 5 
C)  9 to 10 
D)  15

Question 6

The maximum permittable mercury vapor level established by OSHA is _____ mg/m per 40-hour week.

Accepted Answer

A)  0.05 
B)  0.5 
C)  5 
D)  50 
A)  0.05 
B)  0.5 
C)  5 
D)  50

Question 7

Which of the following delivery methods for silver amalgam exposes the staff to the least amount of mercury?

Accepted Answer

A)  Mercury added to alloy particles and mixed with a mortar and pestle 
B)  Silver alloy powder and mercury sealed into a disposable hard plastic capsule 
C)  Powder compressed into tablets and mixed with mercury in a reusable mixing capsule 
D)  None of the above 
A)  Mercury added to alloy particles and mixed with a mortar and pestle 
B)  Silver alloy powder and mercury sealed into a disposable hard plastic capsule 
C)  Powder compressed into tablets and mixed with mercury in a reusable mixing capsule 
D)  None of the above

Question 8

Which of the following are characteristics of under-triturated amalgam?

Accepted Answer

A)  Will appear dry and crumbly 
B)  Does not condense well 
C)  Is shiny in appearance 
D)  A and B are correct. 
A)  Will appear dry and crumbly 
B)  Does not condense well 
C)  Is shiny in appearance 
D)  A and B are correct.

Question 9

In the set mass of amalgam, original silver alloy particles comprise over ____% of the volume.

Accepted Answer

A)  10 
B)  25 
C)  50 
D)  75 
E)  90 
A)  10 
B)  25 
C)  50 
D)  75 
E)  90

Question 10

At 1 day after placement, amalgam's tensile strength most closely resembles which human structure?

Accepted Answer

A)  Bone 
B)  Dentin 
C)  Enamel 
D)  Cementum 
A)  Bone 
B)  Dentin 
C)  Enamel 
D)  Cementum

Question 11

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

Question 12

________ 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 
A)  1 to 2 µg 
B)  2 to 4 wt % 
C)  50% 
D)  No

Question 13

Compare and contrast corrosion and tarnish.

Accepted Answer

Tarnish is a surface phenomenon that can

Question 14

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

Accepted Answer

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

Question 15

What is the purpose of over-packing the preparation with amalgam?

Accepted Answer

A)  Adequate contour 
B)  Correct occlusion 
C)  Closed margins 
D)  All of the above 
A)  Adequate contour 
B)  Correct occlusion 
C)  Closed margins 
D)  All of the above

Question 16

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

Accepted Answer

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

Question 17

Of the following, which is an advantage of using spherical amalgam particles?

Accepted Answer

A)  Uses less mercury 
B)  Easier to condense 
C)  Sets slower for additional working time 
D)  Produces a better interproximal contact 
A)  Uses less mercury 
B)  Easier to condense 
C)  Sets slower for additional working time 
D)  Produces a better interproximal contact

Question 18

High-copper amalgam has about _____ wt % copper.

Accepted Answer

A)  3 
B)  5 to 10 
C)  13 to 30 
D)  30 to 40 
E)  40 to 50 
A)  3 
B)  5 to 10 
C)  13 to 30 
D)  30 to 40 
E)  40 to 50

Question 19

What would insufficient strength in a dental amalgam lead to?

Accepted Answer

A)  Tarnish 
B)  Fracture 
C)  Expansion 
D)  Condensation 
A)  Tarnish 
B)  Fracture 
C)  Expansion 
D)  Condensation

Question 20

How will under-triturated amalgam appear?

Accepted Answer

A)  Dull 
B)  Soupy 
C)  Crumbly 
D)  A and C 
E)  B and C 
A)  Dull 
B)  Soupy 
C)  Crumbly 
D)  A and C 
E)  B and C

The sum of ________________________ determines the overall dimensional change of an amalgam restoration.

What is the correct order for the manipulation of amalgam?

Which of the following statement(s) is(are) true of the property of creep for amalgam restorations?

On average, how much copper is in today's dental alloy?

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

The maximum permittable mercury vapor level established by OSHA is _____ mg/m per 40-hour week.

Which of the following delivery methods for silver amalgam exposes the staff to the least amount of mercury?

Which of the following are characteristics of under-triturated amalgam?

In the set mass of amalgam, original silver alloy particles comprise over ____% of the volume.

At 1 day after placement, amalgam's tensile strength most closely resembles which human structure?

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

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

Compare and contrast corrosion and tarnish.

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

What is the purpose of over-packing the preparation with amalgam?

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

Of the following, which is an advantage of using spherical amalgam particles?

High-copper amalgam has about _____ wt % copper.

What would insufficient strength in a dental amalgam lead to?

How will under-triturated amalgam appear?

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

The sum of ________________________ determines the overall dimensional change of an amalgam restoration.

What is the correct order for the manipulation of amalgam?

Which of the following statement(s) is(are) true of the property of creep for amalgam restorations?

On average, how much copper is in today's dental alloy?

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

The maximum permittable mercury vapor level established by OSHA is _____ mg/m per 40-hour week.

Which of the following delivery methods for silver amalgam exposes the staff to the least amount of mercury?

Which of the following are characteristics of under-triturated amalgam?

In the set mass of amalgam, original silver alloy particles comprise over ____% of the volume.

At 1 day after placement, amalgam's tensile strength most closely resembles which human structure?

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

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

Compare and contrast corrosion and tarnish.

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

What is the purpose of over-packing the preparation with amalgam?

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

Of the following, which is an advantage of using spherical amalgam particles?

High-copper amalgam has about _____ wt % copper.

What would insufficient strength in a dental amalgam lead to?

How will under-triturated amalgam appear?

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