Patent ID: 6933327

Claim:
A dental curable composition comprising an organic/inorganic composite filler having an average particle diameter of from 1 to 20 μm and a polymerizable monomer having a (meth)acryloyl group, wherein the cured product of said dental curable composition has a diffusion degree D of not smaller than 0.01 as defined by the following formula, D={ ( I 20 /cos 20°)+( I 70 /cos 70°)}/(2× I 0 ) wherein I 0 , I 20 and I 70 denote intensities of light that has passed through in the directions of 0°, 20° and 70° with respect to the direction of incidence of light when light is permitted to fall perpendicularly onto the surface of a plate-like sample having a thickness of 0.3 mm obtained by curing said dental curable composition; and an inorganic filler which comprises spherical or nearly spherical inorganic particles having an average particle diameter of not larger than 1 μm and/or aggregates of said inorganic particles.