Practice Test Geeks(CDC) Certified Dental Ceramist Practice Test
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Laboratory Techniques & Technology Flashcards

7 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Laboratory Techniques & Technology flashcards as text

  1. Which digital workflow step converts a scanned STL file into a milling or printing path?

    Answer: CAM processing

    CAM (Computer-Aided Manufacturing) processing translates the CAD design into toolpaths or print instructions for the fabrication device.

  2. When using a dental milling unit to produce a zirconia crown, what is the purpose of the pre-sintering stage the blank is in?

    Answer: It is partially sintered, making it softer and easier to mill

    Pre-sintered (green or white) zirconia is in a partially sintered state that is softer, reducing tool wear during milling before final sintering.

  3. A ceramist notices micro-cracks forming along the margin of a pressed ceramic restoration after divesting. The MOST likely cause is:

    Answer: Too-rapid bench cooling of the investment

    Rapid cooling of the investment ring creates thermal shock and uneven contraction, producing marginal micro-cracks in the ceramic.

  4. Which bonding agent chemistry is most appropriate for cementing a high-translucency zirconia restoration?

    Answer: MDP-containing resin cement

    MDP (10-methacryloyloxydecyl dihydrogen phosphate) monomers chemically bond to zirconia's oxide surface, providing durable adhesion.

  5. In a dental laboratory, the primary purpose of an articulator's condylar guidance setting is to:

    Answer: Replicate posterior disclusion during excursive movements

    Condylar guidance reproduces the arc of condylar movement so the articulator mimics posterior tooth disclusion during lateral and protrusive excursions.

  6. Which furnace atmosphere is recommended when firing cobalt-chromium metal frameworks before porcelain application?

    Answer: Vacuum or inert gas atmosphere

    Vacuum or inert-gas firing prevents oxidation of the metal surface beyond the thin oxide layer needed for porcelain bonding.

  7. What is the function of a vibrator when pouring dental stone into an impression?

    Answer: Eliminate air bubbles and ensure complete adaptation

    Vibration encourages air bubbles to rise out of the mix and promotes flow into fine impression detail, reducing voids in the model.