Restorative & Materials · single question
How do you SHORTEN the working (setting) time of alginate impression material?
Show answer and explanation
Correct answer: A. Use warm water
✓ A) Warm water is correct.
Alginate setting is a chemical reaction — heat accelerates it. Warm water = faster set (shorter working time). Cold water = slower set (longer working time). This is clinically useful: use warm water when you want a quick set, cold water when you need more manipulation time (e.g., edentulous patients). Powder-to-water ratio also affects consistency, not primarily setting time. Temperature is the primary variable used to control alginate working time clinically.
Alginate setting is a chemical reaction — heat accelerates it. Warm water = faster set (shorter working time). Cold water = slower set (longer working time). This is clinically useful: use warm water when you want a quick set, cold water when you need more manipulation time (e.g., edentulous patients). Powder-to-water ratio also affects consistency, not primarily setting time. Temperature is the primary variable used to control alginate working time clinically.
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