Chapter 6

Question 1

Which of the following elements is used in the highest amount in an amalgam restoration

Answer 1

Mercury

Question 2

Amalgam is the strongest in ———- strength after it has set.

Answer 2

Compressive

Question 3

The elements composing the gamma- two (y2) phase ( the weakest and most corrosion prone phase) of the amalgam reaction are

Answer 3

Tin and mercury

Question 4

The function of silver in the amalgam reaction is to

Answer 4

Increase strength and corrosion resistant

Question 5

Control of the mercury content during mixing and condensing of amalgam must be carefully considered because

Answer 5

The lower the mercury content, the higher the strength in the lower the marginal breakdown

Question 6

The single most important feature that accounts for the clinical success of amalgam restoration’s is

Answer 6

Marginal seal

Question 7

The manufacturers of dental amalgam control all of the following it’s up

Answer 7

Proper trituration technique

Question 8

An amalgam restoration that has been finished and polished

Answer 8

Reduces the ability of plaque to adhere
Resist tarnish and erosion
Is more likely to have continuous margins with tooth structure

Question 9

In the low copper or traditional amalgam reaction tin reacts with mercury. In the high copper amalgam reaction, tin reacts with

Answer 9

Copper

Question 10

The life expectancy of an amalgam restoration is indirectly related to the size of the restoration. As the restoration increases in size internal stresses decrease, as does the life expectancy.

Answer 10

The first statement is true, the second statement is false.

Question 11

Ashley was condensing an amalgam during lab, and she noticed that the triturated amalgam had a softer mushy feel. What type of alloy did she most likely used in the mixed amalgam?

Answer 11

Spherical

Question 12

Just after Jennifer triturated her amalgam, the appearance of it was crumbly and dry. It already looked set. The amalgam was most likely

Answer 12

Overtriturated

Question 13

Amalgam may be used for a variety of restorative procedures. All of the following pertain to the use of amalgam except

Answer 13

Restoring class I, II, IV, V caries

Question 14

It has been reported in the scientific literature that ————- % of dental patients have a true mercury allergy.

Answer 14

0.1

Question 15

The use of gold foil is limited to a small restorations because of its

Answer 15

Low strength compared to the restorative materials