A master cast is placed in the cast holder and aligned at the zero degree tilt. A 0.02 “ undercut is found on the mesiolingual of the mandibular right second molar. Tilting the cast to the anterior will
- increase the undercut
- decrease the undercut
- not effect the undercut
- none of the above. The cast should not be tilted since all RPD’s are designed at the zero degree tilt.

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