Angulation of the counter bevel placed in cast restoration is determined by:

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.