The basic constituent of reversible hydrocolloid impression material is________________?

Correct answer: A. Agar

  • A. Agar
  • B. Alginic acid
  • C. Gelatin
  • D. alginate

Explanation

Agar is the principal gel-forming constituent of reversible hydrocolloid impression material. Alginate and alginic acid belong to irreversible hydrocolloids, while gelatin is not the basic constituent of dental agar material.

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