Quartz in investment material is added for_______________?
Correct answer: B. Expansion components for casting shrinkage
- A. Strength
- B. Expansion components for casting shrinkage
- C. Decrease strength
- D. Contraction
Explanation
Quartz is a refractory component of dental investment and undergoes thermal expansion when heated. This expansion helps compensate for the solidification shrinkage of the casting alloy.
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