Polymerizable composition

Polymerisable composition, comprising

• (i) 0 to 90% by weight of at least one inorganic filler component,
• (ii) 5 to 99.98% by weight comprising at least one urethane acrylate, the urethane acrylate comprising at least one urethane acrylate having a bivalent alicyclic group of the idealised formula I
• and/or mixtures of said urethanes of formula I, as well as optionally mixtures of the isomers of the afore-mentioned compounds with R1 and R2 each independently selected from H and alkyl having 1 to 8 C-atoms,
• (iii) 0.01 to 5% by weight of at least one di-, tri-, tetra- or multi-functional monomer not being a urethane acrylate and/or 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 polymerisable composition amounting to 100% by weight.