Dental composition comprising a water-soluble polymerizable compound of the following formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ AX n €ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein A is a straight chain or branched linker group containing least n nitrogen atoms, whereby the linker group has polyoxyalkylene and/or polyalkylene imine repeating units and optionally one or more acidic groups, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, wherein each X may be the same or different and are represented by the following formula (2): wherein R 1 and R 2 are independent from each other and represent a hydrogen atom, a C 1-6 alkyl group or a group -(CH 2 ) m -COOM, wherein M represents a hydrogen atom or a metal atom, m is an integer of from 0 to 6, L is a bond or a C 1-6 alkylene group and n is an integer of at least 1 (ii) an initiator system optionally a polyacidic polymer optionally water and/or a water soluble solvent and optionally a particulate filler.
