Trisodium phosphate added to alginate contributes towards_______________?
Correct answer: D. increasing the working time of alginate impression material
- A. Provides gel strength
- B. Acts as an accelerator
- C. Initiating the setting reaction
- D. increasing the working time of alginate impression material
Explanation
Trisodium phosphate reacts preferentially with calcium ions and delays formation of the alginate gel, thereby increasing working time. It is a retarder, not an accelerator or gel-strengthening agent.
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