Transparent, fracture-tough polymerization resins for the production of dental shaped bodies

A radically polymerizable dental material, which comprises

• at least one ABA or AB block copolymer (d),
• at least one monofunctional, radically polymerizable monomer (a) and
• at least one radically polymerizable urethane di(meth)acrylate telechel (b) with a number-average molar mass of from 750 to 2000 g/mol in accordance with general formula (II),
• in which the variables have the following meanings:
• R1, R2 independently of each other in each case H or methyl,
• R3, R4 independently of each other in each case H or methyl,
• x, y independently of each other in each case an integer from 1 to 11,
• n 1, 2 or 3,
• Z
• DA a structural element, which is derived from a diol HO-DA-OH by cleaving the hydrogen atoms from the hydroxyl groups, wherein the diol HO-DA-OH is selected from the following compounds:
• ethoxylated or propoxylated bisphenol A, o-diphenyl or p-diphenyl with 2 to 6 ethoxy or propoxy groups, C2-C18 alkanediols, which can contain 1 to 4 O or S atoms in the carbon chain, ethoxylated or propoxylated bisphenol A with 2, 3 or 4 ethoxy or propoxy groups, hexane-1,6-diol, octane-1,8-diol, nonane-1,9-diol, decane-1,10-diol, undecanediol or dodecane-1,12-diol, tetra- or pentaethylene glycol, cyclic or polycyclic aliphatic diols, cyclohexanediol, norbornanediol, tricyclodecanediol and tricyclodecanedimethanol (octahydro-4,7-methano-1H-indenedimethanol).