The present invention provides a dental mill blank that can provide a dental prosthesis having a color tone and transparency similar to those of natural teeth by cutting. The present invention includes a laminate, and the laminate includes at least three layers of an uppermost layer, at least one intermediate layer, and a lowermost layer, and each layer constituting the laminate includes a filler (A) and a heavy layer. The filler (A) of each layer includes a coalescence (B), and includes at least one inorganic particle (a) and at least one pigment (C), and a chromaticity difference ΔE between the uppermost layer and the lowermost layer. * T is 5.0 or more and 15.0 or less, the transparency difference ΔΔL * T between the uppermost layer and the lowermost layer is 5.0 or more and 15.0 or less, and the chromaticity difference ΔE * between all adjacent layers Is 1.0 or more and 5.5 or less, the transparency difference ΔΔL * of all adjacent layers is 1.0 or more and 5.0 or less, and the transparency ΔL * H of the uppermost layer is 13.5 or more and 25.0. It relates to a dental mill blank having a transparency ΔL * L of 7.0 to 13.0.本発明は、より天然歯と同様の色調及び透明性を有する歯科用補綴物を切削加工により提供できる、歯科用ミルブランクを提供する。本発明は、積層体から構成され、前記積層体が、最上層、少なくとも１層の中間層及び最下層の少なくとも３層を含み、前記積層体を構成する各層が、充填材（Ａ）及び重合体（Ｂ）を含み、各層の前記充填材（Ａ）が、少なくとも１種の無機粒子（ａ）及び少なくとも１種の顔料（Ｃ）を含み、前記最上層と前記最下層の色度差ΔＥ＊Tが５．０以上１５．０以下であり、前記最上層と前記最下層の透明性差ΔΔＬ＊Tが５．０以上１５．０以下であり、全ての隣接する層の色度差ΔＥ＊が１．０以上５．５以下であり、全ての隣接する層の透明性差ΔΔＬ＊が１．０以上５．０以下であり、最上層の透明性ΔＬ＊Hが１３．５以上２５．０以下であり、最下層の透明性ΔＬ＊Lが７．０以上１３．０以下である、歯科用ミルブランクに関する。
