Chapter 6 Amalgam

Question 1

Alloy means?

Answer 1

Metals that are a combination of several elements

Question 2

Amalgam is?

Answer 2

Mixture of ANY metal or alloy with MERCURY

Question 3

What is dental amalgam?

Answer 3

mixture of a SILVER ALLOY with mercury

Question 4

What is dental amalgam made up of?

Answer 4

fine powder: silver, tin and copper

Question 5

What are the three types of alloy particles?

Answer 5

1. Spherical
2. Lathe-cut (irregular)
3. Admixed ( combination)

Question 6

What is affects alloy particles and what is the purpose mercury?

Answer 6

Alloy particles shape greatly affects the amount of liquid mercury needed to wet the surface of the particle

Mercury- is to wet the particles of alloy, causing the mass to undergo change and harden

Question 7

What is dental amalgam mixed by?

Answer 7

amalgamationor trituration

Question 8

What is need to achieve a homogeneous and well adapted restoration?

Answer 8

Sufficient Wetness

Question 9

What is mechnical retention?

Answer 9

How the dentist prep the tooth slanted not straight
- layerd increments the carved

Question 10

What is high-copper amalagam?

Answer 10

• less silver, more copper in the alloy
• increased strength
• **especially early **
• reduced corrosion and marginal marginal
• no increase in expansion

Question 11

What are moisture contamination?

Answer 11

• amalgam witg zinc more affected
• hydrogen gas is produced
• Lifts and expands material

Question 12

What are direct gold/gold foil?

Answer 12

• long-lasting restorations
• Cold-welds to itself at room temp
• limited use due to strength compared to other metallic restorations