| 摘要 |
A measured object mounting tool 2 for producing a three-dimensional shape data comprises a placing part 2 b at the lower face of a cylindrical part 2 a, an inclined part 2 c at a boundary between the side face and the upper face of the cylindrical part 2 a, and a pillar part 2 d at the upper face of the cylindrical part 2 a, where the pillar part 2 d has a mounting part 2 e at the upper face thereof, a three-dimensional coordinate other than the engaging portion 3 a of a model 3 is produced by engaging the model of the dental prosthesis with the mounting part 2 e of the tool 2 on a placing table 1 ; detecting a position where a received light amount is remarkably decreased to by a laser sensor detect a lower end of the inclined part 2 c; and thereby calculating an upper end of the engaging portion 3 a.
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