Question 1

The most likely route of entry for mercury into the patient and dental personnel during the manipulation of amalgam is via:

Accepted Answer

A)  contact through skin. 
B)  absorption in the gut. 
C)  the lungs as a vapor. 
D)  intraoral absorption. 
A)  contact through skin. 
B)  absorption in the gut. 
C)  the lungs as a vapor. 
D)  intraoral absorption. C

Question 2

Insufficient strength in a dental amalgam may lead to:

Accepted Answer

A)  tarnish. 
B)  fracture. 
C)  condensation. 
D)  expansion. 
A)  tarnish. 
B)  fracture. 
C)  condensation. 
D)  expansion. B

Question 3

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)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true; the second statement is false. 
D)  The first statement is false; the second statement is true. 
A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true; the second statement is false. 
D)  The first statement is false; the second statement is true. A

Question 4

The gamma-2 phase of amalgam is composed of:

Accepted Answer

A)  silver-tin. 
B)  tin-mercury. 
C)  copper-tin. 
D)  silver-copper. 
A)  silver-tin. 
B)  tin-mercury. 
C)  copper-tin. 
D)  silver-copper.

Question 5

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 6

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

Accepted Answer

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

Question 7

Over-triturating an amalgam will result in a:

Accepted Answer

A)  dry, crumbly mix. 
B)  puttylike consistency. 
C)  wet, soupy mix. 
D)  hard ball. 
A)  dry, crumbly mix. 
B)  puttylike consistency. 
C)  wet, soupy mix. 
D)  hard ball.

Question 8

Using water when polishing an amalgam restoration will ensure:

Accepted Answer

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

Question 9

Today's dental amalgam:

Accepted Answer

A)  is high in zinc. 
B)  is low in copper. 
C)  has high longevity. 
D)  has placement issues. 
A)  is high in zinc. 
B)  is low in copper. 
C)  has high longevity. 
D)  has placement issues.

Question 10

Of the following statements about esthetic restorative materials,which is not correct?

Accepted Answer

A)  Esthetic restorative materials have a longer longevity. 
B)  Esthetic restorative materials are more expensive. 
C)  There are placement challenges associated with esthetic restorative materials. 
D)  Esthetic restorative materials have a higher strength. 
A)  Esthetic restorative materials have a longer longevity. 
B)  Esthetic restorative materials are more expensive. 
C)  There are placement challenges associated with esthetic restorative materials. 
D)  Esthetic restorative materials have a higher strength.

Question 11

The purpose of over-packing the preparation with amalgam is to ensure:

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 12

Under-triturated amalgam:

Accepted Answer

A)  will appear dry and crumbly. 
B)  is dull in appearance. 
C)  does not condense well. 
D)  all of the above. 
A)  will appear dry and crumbly. 
B)  is dull in appearance. 
C)  does not condense well. 
D)  all of the above.

Question 13

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

Question 14

Which of the following is not correct regarding admixed alloy?

Accepted Answer

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

Question 15

High-copper alloy amalgams have _____ than low-copper amalgams.

Accepted Answer

A)  higher strength 
B)  less corrosion 
C)  better longevity 
D)  A, B, and C 
E)  A and C 
A)  higher strength 
B)  less corrosion 
C)  better longevity 
D)  A, B, and C 
E)  A and C

Question 16

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 17

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 18

Which of the following is not correct regarding spherical alloy?

Accepted Answer

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

Question 19

Which of the following elements is a liquid at room temperature?

Accepted Answer

A)  Beryllium 
B)  Sodium 
C)  Lead 
D)  Mercury 
E)  Gallium 
A)  Beryllium 
B)  Sodium 
C)  Lead 
D)  Mercury 
E)  Gallium

Question 20

Which of the following is a correct assessment regarding mercury vapor in amalgam?

Accepted Answer

A)  Higher release may occur during the setting reaction. 
B)  Higher release may occur during removal of old amalgams. 
C)  Higher release may occur if the amalgam is heated above 80° C. 
D)  All of the above are correct statements. 
A)  Higher release may occur during the setting reaction. 
B)  Higher release may occur during removal of old amalgams. 
C)  Higher release may occur if the amalgam is heated above 80° C. 
D)  All of the above are correct statements.

The most likely route of entry for mercury into the patient and dental personnel during the manipulation of amalgam is via:

Insufficient strength in a dental amalgam may lead to:

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

The gamma-2 phase of amalgam is composed of:

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

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

Over-triturating an amalgam will result in a:

Using water when polishing an amalgam restoration will ensure:

Today's dental amalgam:

Of the following statements about esthetic restorative materials,which is not correct?

The purpose of over-packing the preparation with amalgam is to ensure:

Under-triturated amalgam:

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

Which of the following is not correct regarding admixed alloy?

High-copper alloy amalgams have _____ than low-copper amalgams.

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

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

Which of the following is not correct regarding spherical alloy?

Which of the following elements is a liquid at room temperature?

Which of the following is a correct assessment regarding mercury vapor in amalgam?

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

Exam 5: Dental Amalgam

The most likely route of entry for mercury into the patient and dental personnel during the manipulation of amalgam is via:

Insufficient strength in a dental amalgam may lead to:

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

The gamma-2 phase of amalgam is composed of:

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

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

Over-triturating an amalgam will result in a:

Using water when polishing an amalgam restoration will ensure:

Today's dental amalgam:

Of the following statements about esthetic restorative materials,which is not correct?

The purpose of over-packing the preparation with amalgam is to ensure:

Under-triturated amalgam:

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

Which of the following is not correct regarding admixed alloy?

High-copper alloy amalgams have _____ than low-copper amalgams.

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

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

Which of the following is not correct regarding spherical alloy?

Which of the following elements is a liquid at room temperature?

Which of the following is a correct assessment regarding mercury vapor in amalgam?

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