Angulation of the counter bevel placed in cast restoration is determined by:
Correct Answer: All of the above
Description: Angulation of the Counter Bevel
Measured by the embracing angle: Angle between the bevel and the long axis of the crown - 30 to 70 degrees.
Factors Determining the Angulation
1. Amount of indicated involvement for the facial / lingual surface:
The more the desirable involvement is, the less will be the embracing angle to preserve tooth structure.
2. Amount of needed retention:
The shorter the preparation walls, the less will be the embracing angle with the long axis.
May be parallel to the intracoronal wall proper.
3. Type of cast alloy:
The less the castability, the greater will be the embracing angle.
Allows more bulk marginally.
Category:
Dental
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