To provide a method for creating three-dimensional data of a position of an outer periphery at the occlusal surface side of a keeper used for creating three-dimensional data of a keeper embedding part of an abutment for an implant, the method includes steps of placing a keeper analog 2 having a reference plane 2a, which has the same shape as that of a surface Ka at the occlusal surface side of a keeper K to be embedded and is parallel to the surface Ka, projectingly on an abutment model 1, placing the abutment model 1 having the keeper analog 2 on a three-dimensional measuring apparatus, and measuring three-dimensional data of an outside shape of the abutment model 1 having the keeper analog 2, wherein the method further includes a first step of acquiring a normal vector 2aa of the reference plane 2a of the keeper analog 2 and an outer periphery 2ab of the reference plane 2 based on the measured three-dimensional data, and a second step of moving the outer periphery 2ab of the reference plane 2a of the keeper analog 2 to a position 3 at the abutment mode 1 side by a height 2b of the keeper analog 2 from the reference plane 2a of the keeper analog 2 along the normal vector 2aa of the reference plane 2a of the keeper analog 2, setting the position 3 to be a position of an outer periphery Kb at the occlusal surface side of the keeper K, and acquiring three-dimensional data of the outer periphery Kb at the occlusal surface side of the keeper K.
