COMPOSITIONS FOR DENTAL COMPOSITES WITH TRICYCLO[5.2.1.02.6]DECANE DERIVATIVES

1 . Dental composites comprising

monomers,

crosslinking agents,

fillers,

initiators, wherein

A: the proportion of crosslinking agent is formed in an amount of more than 50% by acrylate monomers with a TCD urethane structure having the general formula

in which

A is a straight-chain or branched aliphatic radical with 2 to 20 carbon atoms, the radical containing, optionally, 1 to 3 oxygen bridges, an aromatic radical with 6 to 24 carbon atoms, an araliphatic radical with 7 to 26 carbon atoms or a cycloaliphatic radical with 6 to 26 carbon atoms,

r represents the number of chains issuing from A and an integer of 2 to 6,

R 1 and R 2 are identical and represent hydrogen or are different and represent hydrogen and methyl,

n represents, for each chain issuing from A, independently an integer of 0 to 5,

X represents the group

in which

R 4 and R 5 are identical or different and represent hydrogen, halogen, lower alkoxy, lower alkyl or trifluoromethyl,

Z may contain a divalent straight-chain or branched aliphatic hydrocarbon radicals of 3 to 15 carbon atoms which, optionally, may contain 1 to 3 oxygen bridges atoms and, optionally, may be substituted by 1 to 4 additional (meth)acrylate radicals, R 2 , R 3 are exclusively hydrogen, and

B exhibits the cytotoxicity of the hardened composite corresponding to the standard requirements according to ISO 10993-5 and DIN EN ISO 7405, has the assessment “no cytotoxic potential”.

2 . Composition according to claim 1 , wherein the crosslinking agent moiety further comprises silorans.

3 . Composition according to claim 1 which is essentially free from bis-GMA.