NBDHE Review Questions: Quiz 239

May 18, 2016 by Hassan Shah

Quiz: Which of the following statements about an amalgam tooth/cavity preparation is true?
- A. The enamel cavosurface margin angle must be 90 degrees.
- B. The cavosurface margin should provide for a 90degree amalgam margin.
- C. All prepared walls should converge externally.
- D. Retention form for Class Vs can be placed at the DEJ.

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