Pyroplastic flow of porcelain is due to___________________?
Correct answer: A. High temperature during glazing
- A. High temperature during glazing
- B. Low temperature during glazing
- C. Improper condensation
- D. High firing temperature
Explanation
Pyroplastic flow is the viscous deformation of porcelain at elevated firing or glazing temperatures, especially when the softened porcelain is unsupported. Thus, high temperature during glazing can cause the restoration to sag or distort.
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