The present invention relates to an aqueous dental glass ionomer composition, (A) a reactive fine particle glass, (B) a water-soluble polymerizable polymer containing acidic groups, wherein the polymerizable polymer is reactive with the particulate glass in a cement reaction whereby the polymerizable polymer has a polymer backbone and one or more The polymerizable polymer has a hydrolytically stable pendant group having a polymerizable carbon-carbon double bond, a) In order to obtain copolymers containing amino groups,(I) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety(Ii) a second copolymerizable monomer comprising one or more optionally protected primary and / or secondary amino groups and a second polymerizable organic moiety Copolymerizing the mixture,b) reacting the amino group-containing copolymer with the amino group of the repeating unit derived from the polymerizable moiety and the second copolymerizable monomer in the copolymer containing the amino group obtained in the first step In which the polymerizable pendant group is linked to the backbone via a linkage group that is stable to hydrolysis, the method comprising the step of coupling a compound having a protected Deprotecting the amino group, coupling,And deprotecting said protected carboxylic acid group as necessary after step a) or step b) to obtain a polymerizable polymer,Obtained by a process comprising(C) a hydrolytically stable water-soluble monomer having one polymerizable double bond and optionally a carboxylic acid group, wherein said monomer has a molecular weight of at most 200 Da for hydrolysis A stable water-soluble monomer,(D) a polymerization initiator system and(E) an aqueous dental glass ionomer composition comprising a polymerizable hydrolytically stable crosslinking agent having at least two polymerizable carbon-carbon double bonds.本発明は、水性歯科用グラスアイオノマー組成物に関し、前記組成物は、 (A) 反応性微粒子ガラスと、 (B) 酸