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
restorations.
a. Pumice.
b. Zirconium silicate.
c.
Jeweler's rouge.
d. Tin oxide.
e. Tripoli.
MD0502
2-13
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