PROBLEM TO BE SOLVED: To provide a powder-liquid type dental restorative material obtained by blending an inorganic pigment into a powder material, in which the dispersibility of the inorganic pigment in a cured body is improved, irregular colors and the roughness of color tones are improved, additionally, the fluidity of the powder material is satisfactory, and the size of muddy particles formed at the tip of a brush is easy to be controlled.SOLUTION: In the powder-liquid type dental restorative material composed of (A) a liquid material including a polymerizable monomer and (B) a powder material including organic polymer particles soluble in the (A) liquid material, and in which at least either the (A) liquid material or (B) powder material includes a polymerization initiator, at least a part of the organic polymer particles included in the (B) powder material being inorganic pigment-dispersed organic polymer particles in which inorganic pigment fine particles, preferably, titanium oxide fine particles are dispersed into the particles in a content of 0.1 to 2 mass%.COPYRIGHT: (C)2013,JPO&INPIT【課題】 粉材に無機顔料を配合した粉液型歯科用修復材において、硬化体における、無機顔料の分散性を向上させ、色ムラや色調の粗さを改善し、加えて粉材の流動性も良好で、筆先に形成される泥粒の大きさをコントロールし易いものを開発すること。【解決手段】 重合性単量体を含む(A)液材と、該(A)液材に溶解性の有機ポリマー粒子を含む(B)粉材とからなり、これら(A)液材または(B)粉材の少なくとも一方には重合開始剤が含有されてなる粉液型歯科用修復材において、上記(B)粉材に含まれる有機ポリマー粒子の少なくとも一部が、粒子内に無機顔料微粒子、好適には酸化チタン微粒子が0.1~2質量%の含有量で分散する無機顔料分散有機ポリマー粒子であることを特徴とする粉液型歯科用修復材。【選択図】 なし
