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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?
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?
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?
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?
What is the purpose of including grooves as additional retentive features on short clinical crowns or when high displacement forces are anticipated?
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Why might the complete cast crown be used to support a removable partial denture?
Why might the complete cast crown be used to support a removable partial denture?
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What is the main disadvantage of preparing proximal guide planes and survey contours for a removable partial denture using a complete cast crown?
What is the main disadvantage of preparing proximal guide planes and survey contours for a removable partial denture using a complete cast crown?
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