| abstract |
The invention relates to a dental composite comprising: (A) a matrix having a resin with the following structural elements (Ib), wherein the radicals and indices have the following meanings: R is an open-chain and/or cyclic, optionally modified alkylene group, arylene group or alkylene aryl group; R<SUP>1</SUP> represents an open-chain and/or cyclic optionally modified alkylene group, arylene group or alkylene arylene group, which is substituted by the urethane group shown in the formula; R' is an open-chain and/or cyclic alkyl group, alkenyl group, aryl group, alkylaryl group or arylalkyl group; B and B' are the same or different; both radicals have the meaning of an organically polymerizable group having at least one (meth)acrylate group; radicals R<SUP>3</SUP> are the same or different and have, at least in part, the meaning of a bond to another silicon atom and depict a hydrogen atom, an alkyl group or a bond to another metal atom, which can inserted in silicic acid heteropolycondensates; a represents 1 or 2, and; b is 0 or 1, and comprising; (B) a nanoparticulate filler and, optionally, a suitable polymerization initiator. |