To provide a dental resin-reinforced glass ionomer cement composition which causes less stringiness of the mixed material than conventional techniques, is excellent in cavity filling property and in application property to a dental prosthesis device, becomes soon after completion of mixing in a state that it is possible to perform shaping operation, and exhibits excellent mixability, mechanical characteristic and transparency.

To provide a dental resin-reinforced glass ionomer cement composition comprising (a) acid-reactive glass powder, (b) polyalkanoic acid, (c) water, (d) polymerizable monomer, (e) porous inorganic filler: 1% by mass or more and 15% by mass or less, and (f) polymerization initiator, wherein the center portion of the (e) porous inorganic filler is an inorganic particle consisting of only silicon dioxide or consisting of silicon dioxide and an oxide containing one or more metal elements.

The invention relates to a polymerisable dental composite material comprising (i) 40 to 90% by weight of an inorganic filler component comprising at least one dental glass, as well as optionally at least one an amorphous metal oxide, (ii) 10 to 60% by weight of at least one urethane (alkyl) acrylate of the idealised formula I, (iii) 0.01 to 15% by weight of at least one di-, tri-, tetra- or multi-functional monomer not being a urethane (alkyl) acrylate, (iv) 0.01 to 10% by weight of at least one initiator, of an initiator system, as well as optionally of at least one stabiliser, and optionally of at least one pigment, the total composition of the composite material amounting to 100% by weight, as well as to a polymerised composite material for producing direct dental restorations or indirect dental restorations.

The invention relates to a polymerisable dental composite material comprising (i) 40 to 90% by weight of an inorganic filler component comprising at least one dental glass, as well as optionally at least one an amorphous metal oxide, (ii) 10 to 60% by weight of at least one urethane (alkyl) acrylate of the idealised formula I, (iii) 0.01 to 15% by weight of at least one di-, tri-, tetra- or multi-functional monomer not being a urethane (alkyl) acrylate, (iv) 0.01 to 10% by weight of at least one initiator, of an initiator system, as well as optionally of at least one stabiliser, and optionally of at least one pigment, the total composition of the composite material amounting to 100% by weight, as well as to a polymerised composite material for producing direct dental restorations or indirect dental restorations.