An aqueous dental glass ionomer composition comprising(A) a reactive particulate glass,(B) a water-soluble polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction,(C) a water-soluble , hydrolysis-stable monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group；(D) a water-soluble, hydrolysis-stable polymerizable crosslinker having at least two polymerizable carbon-carbon double bonds； and(E) a polymerization initiator system.
