PROBLEM TO BE SOLVED: To provide a master model for dental technology which is capable of increasing connection strength of a fixing plate to a support base in the horizontal direction.SOLUTION: On at least part of a circumferential edge of an upper surface of the support base 12, a connection projection 24 projecting upward is provided. On an inner side part of the connection projection 24, a plurality of first projecting parts 26 and a plurality of first recessed parts 28 are alternately provided. At least on part of a circumferential edge of a lower surface of the fixing plate 6, a connection recess 36 extended upward is provided. On an inner side part of the connection recess 36, a plurality of second projecting parts 38 and a plurality of second recessed parts 40 are alternately provided. As the fixing plate 6 is supported on the upper surface of the support base 12, the first projecting parts 26 and the first recessed parts 28 on the connection projection 24 are respectively connected to the second recessed parts 40 and the second projecting parts 38 of the connection recess 36.COPYRIGHT: (C)2012,JPO&INPIT【課題】 固定用プレートと支持基台との水平方向の連結強度を高め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】 支持基台12の上面における周縁の少なくとも一部には、上方に突出する連結用突部24が設けられ、連結用突部24の内側部には、第1突状部26及び第1凹状部28が交互に複数設けられている。また固定用プレート6の下面における周縁の少なくとも一部には、上方に延びる連結用凹部36が設けられ、連結用凹部36の内側部には、第2突状部38及び第2凹状部40が交互に複数設けられている。固定用プレート6が支持基台12の上面に支持されると、連結用突部24の第1突状部26及び第1凹状部28はそれぞれ、連結用凹部36の第2凹状部40及び第2突状部38と相互に連結される。【選択図】 図2
