According to the present invention, the reference denture is guided to the articulator in which the intraoral or upper and lower edentulous jaw model is fixed, and the alignment of the reference denture in the articulator in which the intraoral or the upper and lower edentulous jaw model is fixed. There is provided a reference denture positioning jig having a reference denture holding portion that holds a reference denture. [Selection diagram]本発明により、 基準義歯を口腔内又は上下無歯顎模型が固定された咬合器に誘導するとともに、前記口腔内又は前記上下無歯顎模型が固定された咬合器における前記基準義歯の位置合わせを行う冶具であって、基準義歯を保持する基準義歯保持部を有する基準義歯用位置合せ冶具が提供される。【選択図】 図１
