Perforated impression tray are used for_______________?
Correct answer: D. Alginate
- A. Impression compound
- B. Zinc oxide-eugenol
- C. Agar-agar
- D. Alginate
Explanation
Perforations retain alginate mechanically as the material passes through the tray openings during removal. Zinc oxide-eugenol and agar are generally used with trays providing other forms of retention or support.
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Practise Impression Materials
102 free Impression Materials MCQs from Dental Materials, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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