Which of the following cast gold alloys is used for fabricating partial denture frameworks______________?
Correct answer: D. Type IV - Extra Hard
- A. Type I - Soft
- B. Type II - Hard
- C. Type III - Hard
- D. Type IV - Extra Hard
Explanation
Partial denture frameworks require the greatest strength and hardness among cast gold alloy types, so Type IV, extra-hard alloy, is used. Types I and II are intended for less demanding restorations.
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