(CDC) Certified Dental Ceramist Practice Test
CDC CDC Ceramic Firing & Kiln Operations
What is the primary purpose of the 'pre-drying' stage at the beginning of a porcelain firing cycle?
Select your answer
A
To harden the opaque layer before glazing
B
To slowly remove moisture from the wet porcelain to prevent cracking
C
To activate ceramic colorants before peak temperature
D
To bond the porcelain to the metal framework
Hint
