Castable Metal Alloys in Dentistry

~ Exam ~

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This test has 10 questions.

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1. The lost wax technique is best characterized as a:

  a. Way to retrieve lost wax from a patient’s mouth.

  b. Way to create a wax replica of an item.

  c. Was first invented in France.

  d. None of the above.


2. The term “crown” describes any:

  a. Inlay restoration.

  b. Onlay restoration.

  c. Full-coverage restoration.

  d. All of the above.


3. Shear force causes:

  a. Deformation

  b. Edge dislocations

  c. Plane slippage

  d. All of the above.


4. Examples of noble metals are:

  a. Gold

  b. Palladium

  c. Copper

  d. A and B


5. Noble metals are resistant to:

  a. Bending

  b. Corrosion

  c. Oxidation

  d. None of the above.

  e. B and C


6. Three oxide-forming elements are:

  a. Iron, indium, tin

  b. Gold, palladium, platinum

  c. Copper, zinc, gold

  d. None of the above.


7. Porcelain will not chemically bond with gold.

  a. True

  b. False


8. All porcelains used to veneer metallic substructures contain Lucite crystals.

  a. True

  b. False


9. There are three general types of high-noble alloys. They are:

  a. Gold-platinum alloys.

  b. Gold-palladium alloys.

  c. Gold, copper, silver, and palladium alloys.

  d. All of the above.


10. Ruthenium (Ru), Iridium (Ir), and Rhenium (Re) are used as grain refiners.

  a. True

  b. False