Problem to be solved: to provide a dental porcelain paste which is capable of maintaining a paste state for a long period of time and having excellent coating property and having no effect of carbonization or bubbles due to the influence of organic or polymer components during firing.A dental porcelain paste for preparing a prosthetic deviceGlass powder (a) having a maximum particle size of less than 100. Mu. M and an average particle diameter of 1 to 20. Mu. M is 50.0 to 80.0 wt%A hydrophobic particle silica (b) having an average primary particle diameter of 1-50 nm is 0.5 to 10.0 wt%AndA dental porcelain paste characterized by containing 10.0-49.5 wt% organic solvent (c) of boiling point (BP) of 100-300.degree. C.No selection【課題】長期間ペースト状態を維持でき、優れた塗布性有し、焼成時に有機成分または高分子成分の影響による炭化や気泡がほとんど発生しない歯科用陶材ペーストを提供する。【解決手段】歯科補綴装置を作製するための歯科用陶材ペーストであって、最大粒子径が１００μｍ以下であって平均粒子径が１～２０μｍのガラス粉末（ａ）を５０．０～８０．０ ｗｔ％、平均一次粒子径が１～５０ｎｍの疎水化微粒子シリカ（ｂ）を０．５～１０．０ｗｔ％、及び、沸点（ｂｐ）が１００～３００℃の有機溶剤（ｃ）を１０．０～４９．５ｗｔ％含むことを特徴とする歯科用陶材ペースト。【選択図】なし
