PROBLEM TO BE SOLVED: To provide a plaster-based material for dental implant by high-temperature casting exhibiting excellent high-temperature decomposition resisting characteristics (with no cracks, cast pores or defects) while retaining the operability, inflation property and mold strength equivalent to those of a conventional material.SOLUTION: The plaster-based material for dental implant material by high-temperature casting includes a heat-resistant material and hemihydrate plaster, and is characterized by the inclusion of one or at least two kinds of materials selected from monosaccharide, disaccharide and sugar alcohol. In addition, phosphate of aluminum metaphosphate and/or sodium metaphosphate may be blended by 0.05-10 wt.%.COPYRIGHT: (C)2008,JPO&INPIT【課題】 操作性,膨張性,鋳型強度は従来と同等でありながら優れた耐高温熱分解特性(亀裂,鋳巣,欠陥が無い)を示す歯科用高温鋳造用石膏系埋没材を提供する。【解決手段】 耐熱材と半水石膏を含む歯科用高温鋳造用石膏系埋没材において、単糖類,二糖類,糖アルコールより選ばれる1種または2種以上を含有することを特徴とする歯科用高温鋳造用石膏系埋没材とする。更に、メタリン酸アルミニウム及び/またはメタリン酸ナトリウムのリン酸塩を0.05~10重量%配合してもよい。【選択図】 なし
