Medical MCQs Medical Mcqs
Q When making a polysulphide impression for a caste crown, custom trays are usually preferred over stock trays for all of the following reasons except_______________?
  • A A. Custom trays facilitate uniform contraction of impression material
  • B B. Custom trays require less impression material
  • C C. Stock trays may be short in the flange area
  • D D. Impressions made n the custom trays are easier to remove from the mouth
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