The present invention provides a method for producing surface-treated colored inorganic particles and a paste-like material using the surface-treated colored inorganic particles, which enables the color tone reproducibility that matches the target color without variation in the color tone of the composition even if produced multiple times. A method for producing a curable composition and a method for producing a dental mill blank are provided. The present invention relates to a dispersion [I] obtained by dispersing inorganic particles having an average particle size of 0.005 to 5 μm and a pigment in a solvent, and a solution [II] obtained by hydrolyzing a surface treatment agent in the presence of a hydrolysis aid. ] It is related with the manufacturing method of the surface treatment coloring inorganic particle which spray-drys the liquid mixture which mixed.本発明は、複数回作製しても組成物の色調がバラつきなく、目標色と合致する色調再現性を可能とした、表面処理着色無機粒子の製造方法及び表面処理着色無機粒子を使用したペースト状硬化性組成物の製造方法及び歯科用ミルブランクの製造方法を提供する。本発明は、平均粒子径０．００５～５μｍの無機粒子と顔料を溶媒中に分散させてなる分散液〔Ｉ〕と、加水分解助剤の存在下で表面処理剤を加水分解した溶液〔ＩＩ〕とを混合した混合液を噴霧乾燥する、表面処理着色無機粒子の製造方法に関する。
