CDC Certified Dental Ceramist (NBC CDT Ceramics Specialty)

What is the primary purpose of the 'pre-drying' stage at the beginning of a porcelain firing cycle?

To harden the opaque layer before glazing To slowly remove moisture from the wet porcelain to prevent cracking To activate ceramic colorants before peak temperature To bond the porcelain to the metal framework

Correct Answer:

To slowly remove moisture from the wet porcelain to prevent cracking

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