Use of a copolymer of acrylic acid and maleic acid as mixing component for glass-ionomer cements

摘要

The invention relates to the use of a maleic acid / acrylic acid copolymer which is composed of 20 to 65 mol% of acrylic acid units and 80 to 35 mol% of maleic acid units for the production of a mixing component for glass ionomer cements. The mixing component according to the invention for glass ionomer cements can a) form the liquid mixture component and in this case consists of 20 to 65% by weight. % aqueous solution of the above-mentioned maleic acid / acrylic acid copolymer, if appropriate with customary additives, or can b) form the solid mixture component and in this case consists of a powder mixture of a glass ionomer cement powder and this maleic acid / acrylic acid copolymer and any customary additives. Glass ionomer cements produced using this mixing component have good aesthetic effects, high strength and excellent adhesion to the tooth enamel and dentin when used as a dental filling material.