PROBLEM TO BE SOLVED: To provide a dental stereolithography three-dimensional printing material having excellent dimensional accuracy while suppressing a change with time of a dental three-dimensional model, and a dental three-dimensional model produced by using the material. SOLUTION: In all the atoms constituting the monofunctional acrylate monomer (a) having an aromatic ring, which contains at least one kind of monofunctional acrylate monomer (a) having an aromatic ring and a photopolymerization initiator (b). A dental optical three-dimensional printing material characterized in that the electronegativity difference between adjacent atoms in a covalent bond is less than 1.0. Preferably, a dental optical three-dimensional printing material containing 1-99.9 wt% of a monofunctional acrylate monomer (a) having an aromatic ring and 0.1-5 wt% of a photopolymerization initiator (b). [Selection diagram] None【課題】歯科用三次元造形物の経時変化を抑えた寸法精度に優れる歯科用光造形式三次元印刷材料及びその材料を用いて作製される歯科用三次元造形物の提供。【解決手段】芳香環を有する単官能アクリレートモノマー(a)を少なくとも一種類以上および光重合開始剤(b)を含み、芳香環を有する単官能アクリレートモノマー(a)を構成する全ての原子において、共有結合で隣り合う原子間の電気陰性度差が1.0未満であることを特徴とする歯科用光造式三次元印刷材料。好ましくは、芳香環を有する単官能アクリレートモノマー(a)を1-99.9wt%、光重合開始剤(b)を0.1-5wt%含む、歯科用光造式三次元印刷材料。【選択図】なし
