Abstract: According to one aspect of the present invention, a dental photopolymerizable composition includes: a (meth)acrylate compound; a filler; a photopolymerization initiator; and a phthalic acid derivative and/or a thiophene derivative, wherein a content of the phthalic acid derivative and/or the thiophene derivative is greater than or equal to 0.05% by mass and less than or equal to 0.25% by mass.

Abstract: According to one aspect of the present invention, a dental photopolymerizable composition includes: a (meth)acrylate compound; a filler; a photopolymerization initiator; and a phthalic acid derivative and/or a thiophene derivative, wherein a content of the phthalic acid derivative and/or the thiophene derivative is greater than or equal to 0.05% by mass and less than or equal to 0.25% by mass.

Abstract: To provide a zirconia-based composite ceramic sintered compact capable of being colored to white appropriate for a dental prosthesis while maintaining its mechanical and physical properties, and also provide a method for producing the same. The method for producing the zirconia-based composite ceramic sintered compact includes semi-sintering a zirconia-alumina composite ceramic containing an alumina particle and a zirconia particle comprising of tetragonal zirconia containing ceria of 8 to 12 mol %, forming the composite ceramic; dipping the formed composite ceramic in a neodymium ion solution or complex solution; drying the dipped composite ceramic; and finally sintering it.

Abstract: To provide a zirconia-based composite ceramic sintered compact capable of being colored to white appropriate for a dental prosthesis while maintaining its mechanical and physical properties, and also provide a method for producing the same. The method for producing the zirconia-based composite ceramic sintered compact includes semi-sintering a zirconia-alumina composite ceramic containing an alumina particle and a zirconia particle comprising of tetragonal zirconia containing ceria of 8 to 12 mol %, forming the composite ceramic; dipping the formed composite ceramic in a neodymium ion solution or complex solution; drying the dipped composite ceramic; and finally sintering it.

Abstract: For easier removal after X-ray imaging, simple application, and excellent X-ray imaging properties, a dental paste composition having X-ray imaging property comprises: (a) 3 to 25 wt % of polyhydric alcohol; (b) 0.5 to 10 wt % of a powdery high polymer material dissolved and swelled in the polyhydric alcohol and water; (c) 10 to 30 wt % of water; and (d) 25 to 80 wt % of a powdery X-ray imaging material, the total weight of the polyhydric alcohol (a) and water (c) is 3 to 25 times of the weight of the powdery high polymer material (b), and the composition can be added with (e) 0.01 to 5 wt % of a fluorine compound, and (f) 15 wt % or less of an additive which is one or more kinds selected from a cushion material, a sweetener, a colorant, a preservative, an antiseptic agent, a fungicide, a pH regulator, an expander, and a perfume.