Dental curable composition

A dental curable composition which includes a radically polymerizable monomer component (A) consisting of a bifunctional monomer component (A-1), a basic monomer component (A-3) and optionally a diluting monomer component (A-2);

• a polymerizing catalyst (B);
• and an inorganic granular material (C), characterized in that:
• said bifunctional monomer (A-1) is represented by a following formula (α),
• RP—SP1—RP (α)
• where, RP is a radically polymerizable group represented by CH2═C(R)—COO— or CH2═C(R)—CONH—, wherein R is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, and SP1 is a hydrocarbon group having 5 to 15 carbon atoms;
• a content of said bifunctional monomer (A-1) in the radically polymerizable monomer component (A) is 10 to 20% by mass under a condition that the content of the diluting monomer ( A-2), relative to the monomer component (A), is zero or not more than 5% by mass, the diluting monomer (A-2) being represented by a following formula (β),
• RP—SP2—RP (β)
• where, RP is as defined in the above formula (α), and SP2 is an aliphatic hydrocarbon group different from SP1, an oxygen-containing aliphatic hydrocarbon group having not less than 2 oxygen atoms, or an oxygen-containing aromatic hydrocarbon group having not less than 3 oxygen atoms;
• said basic monomer (A-3) is a radically polymerizable monomer other than (A-1) or (A-2) and containing 2 to 6 radically polymerizable groups and, further, having, a molecular structure in which the radically polymerizable groups are coupled together via a crosslinking group that has an aromatic ether bond, an aromatic ketone bond, an amide bond or an urethane bond;
• said inorganic granular material (C) is contained in an amount of 400 to 700 parts by mass per 100 parts by mass of the radically polymerizable monomer component (A);
• and
• said polymerizing catalyst (B) is a thermally polymerizing catalyst.