Chapter 9: Vocabulary

Question 1

a mixture of two or more metals

Answer 1

Alloy

Question 2

reaction that occurs when silver-based alloy is mixed with mercury

Answer 2

Amalgamation

Question 3

restorative material composed of silver-based alloy mixed with mercury

Answer 3

Dental Amalgam

Question 4

irregularly shaped particles formed by shaving fine particles from an alloy ingot

Answer 4

Lathe-Cut Alloy

Question 5

alloy particles produced as small spheres

Answer 5

Spherical Alloy

Question 6

mixture of lathe-cut and spherical alloys

Answer 6

Admixed Alloy

Question 7

a chemical reaction between tin in the silver-based alloy and mercury that causes corrosion in the amalgam

Answer 7

Gamma-2 Phase

Question 8

oxidation affecting a thin layer of metal at its surface. Not as destructive as corrosion

Answer 8

Tarnish

Question 9

oxidation from interaction of two dissimilar metals in the presence of a solution containing electrolytes (such as saliva). It results in breakdown of the amalgam

Answer 9

Corrosion

Question 10

gradual change in the shape of a restoration caused by compression from occlusion or adjacent teeth

Answer 10

Creep

Question 11

mechanical device used to mix the silver-based alloy particles with mercury to produce amalgam

Answer 11

Triturator (Amalgamator)