Ceramics

Question 0

In a bridge design the minimum retainer frown thickness at the porcelain application area for base alloys is:

Answer 0

0.3mm

Question 1

High fusing porcelains are fired at:

Answer 1

2350-2500*F

Question 2

Low fusing porcelains mature between what temperatures?

Answer 2

870-1065*c

Question 3

What is the minimum allowable thickness for combined metal porcelain on a facial surface?

Answer 3

1.2-1.5mm

Question 4

The material most biocompatible with oral tissues is:

Answer 4

Highly polished gold

Question 5

What serves as the framework around which the other ingredients can flow and acts to strengthen the porcelain?

Answer 5

Quartz

Question 6

What is the ingredient primarily responsible for forming the glass matrix?

Answer 6

Feldspar

Question 7

Who is credited with the idea of fusing porcelain to a thin platinum foil; developed low-fusing porcelain, and introduced the porcelain jacket crown to dentistry?

Answer 7

Charles H. Land

Question 8

Medium-fusing porcelains are fired at:

Answer 8

2,000° to 2,300°F.