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Tuesday, March 17, 2009

102 MCQs in Prosthodontics

Tuesday, March 17, 2009

Which of the following are true about gypsum bonded casting investments?

1. should be allowed to set a minimum of 45 minutes

2. should be heated no longer than 30 minutes at 900 degrees F

3. the mold temperature should not exceed 1200 degrees F

4. used for alloys with melting temperatures exceeding 1800 degrees F

5. ideal mold temperature for hygroscopic technique is 875 degrees F

  1. 1, 2, 3, 5
  2. 1, 3, 5
  3. 2, 3, 4
  4. all of the above
  5. none of the above are correct statements
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