Question 1

If molten alloy was cast into a ring at room temperature, what will occur?

Accepted Answer

A)  Casting would be much larger than the die. 
B)  Margins of the casting would be complete. 
C)  Investment would partially decompose. 
D)  Investment would likely crack. 
A)  Casting would be much larger than the die. 
B)  Margins of the casting would be complete. 
C)  Investment would partially decompose. 
D)  Investment would likely crack.

Question 2

Because cast metal __________ as it freezes, investment must __________ as it sets.

Accepted Answer

A)  shrinks; shrinks 
B)  expands; shrinks 
C)  shrinks; expands 
D)  expand; expands 
A)  shrinks; shrinks 
B)  expands; shrinks 
C)  shrinks; expands 
D)  expand; expands

Question 3

For some gold-based alloys, bench cooling produces a ________, ________ state of the alloy referred to as a(n) ____________.

Accepted Answer

A)  harder; weaker; ordered solution 
B)  harder; stronger; ordered solution 
C)  softer; weaker; eutectic 
D)  softer; stronger; eutectic 
A)  harder; weaker; ordered solution 
B)  harder; stronger; ordered solution 
C)  softer; weaker; eutectic 
D)  softer; stronger; eutectic

If molten alloy was cast into a ring at room temperature, what will occur?

Because cast metal as it freezes, investment must as it sets.

For some gold-based alloys, bench cooling produces a , state of the alloy referred to as a(n) ____.

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Dental Amalgam

Finishing, Polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, Wrought Alloys, and Solders

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters

Exam 12: Casting, Soldering, and Welding

If molten alloy was cast into a ring at room temperature, what will occur?

Because cast metal __________ as it freezes, investment must __________ as it sets.

For some gold-based alloys, bench cooling produces a ________, ________ state of the alloy referred to as a(n) ____________.

Introduction to Restorative Dental Materials

Properties of Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Dental Amalgam

Finishing, Polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, Wrought Alloys, and Solders

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters

Because cast metal as it freezes, investment must as it sets.

For some gold-based alloys, bench cooling produces a , state of the alloy referred to as a(n) ____.