PROBLEM TO BE SOLVED: To provide a working model for dental technician capable of reducing cutting of a dowel pin when cutting a tooth profile model and suppressing dropping of the cut tooth profile model when the tooth profile model is turned over. SOLUTION: A fixing plate 6 to which a tooth profile model 4 is fixed, a plurality of dowel pins 8 implanted in the fixing plate 6, and a support base 10 for supporting the fixing plate 6 are provided. Working model for dental technicians. A plurality of insertion holes 20 are provided in the support region 18 of the support base 10, and the insertion holes 20 are arranged on the specific side portion side of the center line of the support region 18 in the width direction. In addition, the first engaging protrusions 26 and the second engaging protrusions 28 are provided on the specific side portion and the other side portion of the support base 10, and the inner side surface of the second engaging protrusions 28 is specified. A plurality of auxiliary engagement ridges 30 extending toward the side portion side are provided, and the plurality of auxiliary engagement ridges 30 are provided in a number of 1.5 to 5 between the adjacent insertion holes 20. [Selection diagram] Figure 2【課題】歯形模型切断の際のダウエルピンの切断を少なくし、また歯形模型を裏返した際に切断歯形模型が落下するのを抑えることができる歯科技工用作業模型を提供する。【解決手段】歯形模型４が固定される固定用プレート６と、固定用プレート６に植設された複数のダウエルピン８と、固定用プレート６を支持するための支持基台１０と、を備えた歯科技工用作業模型。支持基台１０の支持領域１８には複数の挿入孔２０が設けられ、これら挿入孔２０は、支持領域１８の幅方向の中央線よりも特定側部側に配置されている。また、支持基台１０の特定側部側及びその他方側部には第１係合突条２６及び第２係合突条２８を設け、第２係合突条２８の内側面には、特定側部側に向けて延びる複数の補助係合突条３０を設け、複数の補助係合突条３０は、隣接する挿入孔２０の間に１．５～５個ある構成とする。【選択図】図２
