A dental curable composition which includes: a radically polymerizable monomer component 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; and an inorganic granular material, characterized in that: said bifunctional monomer (A-1) is represented by a following formula ( α), R P -SP 1 -R P ( α) where, R P is a radically polymerizable group represented by CH 2 =C -COO- or CH 2 =C -CONH-, wherein R is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, and SP 1 is a hydrocarbon group having 5 to 15 carbon atoms; a content of said bifunctional monomer (A-1) in the radically polymerizable monomer component is 10 to 20% by mass under a condition that the content of the diluting monomer (A-2) represented by a following formula ( β), R P -S P 2 -R P ( β) where, R P is as defined in the above formula ( α), and SP 2 is an aliphatic hydrocarbon group different from SP 1, 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, relative to the monomer component is zero or not more than 5% by mass; 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 is contained in an amount of 400 to 700 parts by mass per 100 parts by mass of the radically polymerizable monomer component; and said polymerizing catalyst is a thermally polymerizing catalyst. said bifunctional monomer (A-1) is represented by a following formula ( α), R P -SP 1 -R P ( α) where, R P is a radically polymerizable group represented by CH 2 =C -COO- or CH 2 =C -CONH-, wherein R is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, and SP 1 is a hydrocarbon group having 5 to 15 carbon atoms; a content of said bifunctional monomer (A-1) in the radically polymerizable monomer component is 10 to 20% by mass under a condition that the content of the diluting monomer (A-2) represented by a following formula ( β), R P -S P 2 -R P ( β) where, R P is as defined in the above formula ( α), and SP 2 is an aliphatic hydrocarbon group different from SP 1, 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 is contained in an amount of 400 to 700 parts by mass per 100 parts by mass of the radically polymerizable monomer component; and said polymerizing catalyst is a thermally polymerizing catalyst.