JPS6422257A - Medical or dental curable composition - Google Patents

Abstract

PURPOSE:To improve kneading workability and to facilitate the unification with the bone tissue or teeth tissue of a living body, by compounding alkali metal salt or ammonium salt of citric acid with at least one of a powder agent, which consists of an alpha-tricalcium phosphate and a calcium hydroxide powder, and a curing liquid. CONSTITUTION:This curable composition consists of a powder agent, wherein an alpha-tricalcium phosphate powder and a calcium hydroxide powder are together used and a calcium oxide powder or, if necessary, a barium sulfate powder is further used, and a curing liquid, and alkali metal salt or ammonium salt of citric acid is compounded with at least one of the aforementioned powder agent and the curing liquid. The proper use amount of the calcium hydroxide or calcium oxide powder is 0.5-5wt.% of the alpha-tricalcium phosphate powder and the use amount of the barium sulfate powder is used within a range of 5-30wt.% of the alpha-tricalcium phosphate. The curing liquid is composed of a copolymer consisting of polyacrylic acid or acrylic acid and at least one of unsaturated carboxylic acid selected from a group consisting of methacrylic acid, maleic acid, fumaric acid and itaconic acid and the concn. of the aqueous solution of said copolymer is pred. within a range of 10-60wt.%.