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A practically non-aqueous dental cement composition is disclosed and the dental cement composition comprises a polymer or co-polymer having an .alpha.,.beta.-unsaturated carboxylic acid as an essential component of a main monomer; and an inorganic powder capable of forming a metal chelate in the pre

A practically non-aqueous dental cement composition is disclosed and the dental cement composition comprises a polymer or co-polymer having an .alpha.,.beta.-unsaturated carboxylic acid as an essential component of a main monomer; and an inorganic powder capable of forming a metal chelate in the presence of water characterized in that the polymer or co-polymer exists as a solution in a polymerizable monomer that can dissolve the polymer or co-polymer. This provides a dental composition which has not only the advantages of the conventional glass ionomer cement but also a higher setting rate and more desirable physical properties of the setting product and is excellent also in durability, by eliminating the disadvantages in the setting rate and physical properties of the set cement.

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[ What is claimed is:] [1.] A method for setting a dental cement, the method comprising the steps of:preparing in the absence of water a mixture of: (i) a polymer or co-polymer that includes an (meth)acrylic acid as an essential component of a main monomer, (ii) an inorganic powder capable of formin

[ What is claimed is:] [1.] A method for setting a dental cement, the method comprising the steps of:preparing in the absence of water a mixture of: (i) a polymer or co-polymer that includes an (meth)acrylic acid as an essential component of a main monomer, (ii) an inorganic powder capable of forming a metal chelate in the presence of water, and (iii) an alkyl(meth)acrylate having a hydroxyl group, wherein the polymer or co-polymer is dissolved in the alkyl(meth)acrylate having a hydroxyl group, and the inorganic powder is dispersed in the alkyl(meth)acrylate;placing the mixture in a cavity of a tooth;polymerizing in non-contact with water the alkyl(meth)acrylate in the mixture; andforming a metal chelate from the inorganic powder in the mixture by water in saliva.