Question 45 · LDEK · Dental laboratory technology
What type of gypsum is used for pouring working casts for complete dentures fabricated through injection molding technique?
- A. hard stone.
- B. model plaster.
- C. super hard stone, high strength, high expansion.
- D. impression plaster.
- E. super hard stone, high strength, low expansion.
Hint
The cast must resist injection pressure and reproduce the denture-bearing area exactly; think about both strength and setting expansion.
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