PROBLEM TO BE SOLVED: To provide a CAM program capable of efficiently manufacturing a dental prosthesis, including a fissure, with a high precision.SOLUTION: A CAM program operates procedures for processing a dental prosthesis on the basis of shape data of a dental prosthesis (1) including a fissure (1c). The CAM program includes: a procedure (S36) for determining a fissure area (C) to process the fissure on the basis of line shapes (B) along an obtained fissure, the area containing the line shapes and having a predetermined width extending along the line shapes; and a procedure (S37) for operating the processing procedure under conditions different from those for areas other than the fissure area for the sake of the fissure area.
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