Which of the following impression material is rigid ?
Correct answer: A. Zinc oxide-eugenol
- A. Zinc oxide-eugenol
- B. Reversible hydrocolloid
- C. Alginate
- D. Polysulphide rubber
Explanation
Zinc oxide-eugenol sets into a relatively rigid, brittle impression material. Reversible hydrocolloid, alginate, and polysulfide are flexible impression materials.
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