PROBLEM TO BE SOLVED: To provide a dental composite containing crystallized glass. SOLUTION: In a dental composite composition containing crystallized glass and a curable organic substance, a composition containing crystallized glass having a crystal size having an average particle size of 50 to 400 nm is provided, and the nano-crystallized particles are used. Compared to conventional composite products containing crystallized glass and containing micro-sized crystallized particles, it is superior not only in transparency but also in mechanical properties, and also has high aesthetics required for one-day tooth prosthesis materials. Has workability. [Selection diagram] Fig. 2【課題】結晶化ガラスを含む歯科用複合体を提供すること。【解決手段】結晶化ガラス及び硬化性有機物を含む歯科用複合体組成物において、平均粒径50~400nmの結晶サイズを有する結晶化ガラスを含む組成物を提供して、ナノ結晶化粒子である結晶化ガラスを含んで従来のマイクロサイズの結晶化粒子を含む複合体製品に比べて、透明性だけでなく、機械的特性にも優れるうえ、ワンデー歯用補綴素材に要求される高い審美性、加工性を有する。【選択図】図2