Dental curable composition and method of manufacturing same

A method of manufacturing a dental curable composition, the method comprising:

• mixing a polymerizable monomer, inorganic particles (A), and inorganic particles (B),
• wherein the inorganic particles (A) have a volume-median particle size of more than or equal to 0.1 μm and less than or equal to 0.9 μm and are surface-treated with a compound expressed by a general formula
• (where R1 is a hydrogen atom or a methyl group, R2 is a hydrolyzable group, R3 is a hydrocarbon group having 1 to 6 carbon atoms, p is 2 or 3, and q is an integer greater than or equal to 8 and smaller than or equal to 13),
• wherein the inorganic particles (B) have an average primary particle size of more than or equal to 5 nm and less than or equal to 50 nm, where at least one of a group expressed by a general formula
• (where R4 and R5 are independently a methyl group or an ethyl group) and a group expressed by a general formula
• (where R6, R7, and R8 are independently a methyl group or an ethyl group) is present at surfaces of the inorganic particles (B),
• wherein a ratio of a mass of the inorganic particles (B) to a total mass of the inorganic particles (A) and the inorganic particles (B) is more than or equal to 0.02 and less than or equal to 0.05,
• wherein a ratio of a mass of the polymerizable monomer to the total mass of the inorganic particles (A) and the inorganic particles (B) is 0.25 to 0.5, and
• wherein an extrusion strength is less than or equal to 10 kgf.