PROBLEM TO BE SOLVED: To further improve efficiency of work related to design and manufacture of a prosthesis.SOLUTION: The dental prosthesis design program causes a computer to execute processing of: acquiring shape data including a site of a subject in which a prosthesis is to be installed; referring to a storage unit storing the shape data of a plurality of teeth including natural teeth; extracting tooth shape data corresponding to the site of the subject in which the prosthesis is to be installed, on the basis of a degree of matching peripheral shapes of the site of the subject that are contained in the shape represented by the shape data and in which the prosthesis is to be installed; and outputting information related to the extracted tooth shape data.SELECTED DRAWING: Figure 1
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