Dental Addition of 4% potassium sulfate and 0.4% borax to impression plaster helps in A Regulating setting time and expansion B Imparting colour and taste C Regulating strength and consistency D Adhering to tray during impression 💡 Explanation Addition of 4% potassium sulfate and 0.4% borax to impression plaster helps in ✓ Correct Answer: A. Regulating setting time and expansion