Question 45 (part 2) · LDEK · Impressions and impression materials

Individual trays used in fabrication of removable dentures are not made from:

  1. A. acrylic.
  2. B. light cured materials.
  3. C. metal.
  4. D. shellac.
  5. E. thermoplastic materials shaped by hand or in special devices such as Erkopress or Erkoform.
Hint

Think which material would be costly to fabricate and almost impossible to adjust chairside during border moulding.

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