15.
Complete information related to dental porcelain.
a. Upon cooling, the mass is ___________ and ___________.
b. The heating process is called ________________________.
c.
Baked porcelain has a ___________ similar to that of ________
________.
16.
Match the term in Column II to the range of temperature in Column I. Write your
answers in the spaces provided.
COLUMN I
COLUMN II
2000o to 2400o F.
(1)
____
a.
High-fusing porcelain
1600o to 2000o F.
b.
Medium-fusing porcelain
(2)
____
2400o F or over.
c.
Low-fusing porcelain
(3)
____
17.
Which of the following dental porcelains is used for the fabrication of full porcelain
crowns (jacket crowns)?
a. High-fusing porcelain.
b. Medium-fusing porcelain.
c.
Low-fusing porcelain.
18.
Which of the following polishing materials is used in polishing teeth and metal
a. Pumice.
b. Zirconium silicate.
c.
Jeweler's rouge.
d. Tin oxide.
e. Tripoli.
MD0502
2-13