Dentistry: Electric Vitality Testing and Metal Interference Quiz
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Questions and Answers

What is the main reason that electric vitality testing of an abutment tooth is no longer feasible after cementation?

  • The patient objects to the display of metal associated with the complete cast crown.
  • Thermal tests occasionally yield the necessary information.
  • The conductivity of the metal interferes with the test. (correct)
  • The restoration may be restricted to maxillary molars and mandibular molars and premolars.

    • When is the complete cast crown the restoration of choice?

  • Whenever maximum retention and resistance are needed.
  • When high displacement forces are anticipated, such as for the retainer of a long-span FPD.
  • Both (a) and (b) (correct)
  • When correction of axial contours is not feasible with a more conservative technique.

    • What is a disadvantage of the complete cast crown if future complications occur?

  • It is no longer feasible to perform electric vitality testing of the abutment tooth. (correct)
  • Patients may object to the display of metal associated with the restoration.
  • It is restricted to maxillary molars and mandibular molars and premolars.
  • Thermal tests occasionally will yield the necessary information.

    • What is the purpose of including grooves as additional retentive features on short clinical crowns or when high displacement forces are anticipated?

    <p>To provide maximum retention and resistance for the restoration.</p> Signup and view all the answers

    Why might the complete cast crown be used to support a removable partial denture?

    <p>Obtaining the necessary contours with a partial-coverage restoration is more difficult.</p> Signup and view all the answers

    What is the main disadvantage of preparing proximal guide planes and survey contours for a removable partial denture using a complete cast crown?

    <p>Arriving at properly inclined reciprocal guide planes and survey contours is often impractical.</p> Signup and view all the answers

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