PROBLEM TO BE SOLVED: To provide a toothpaste composition for immediately and sufficiently sealing openings in dentinal tubules in the surface of exposed dentine and effectively preventing pain caused by dentine hypersensitivity.SOLUTION: The toothpaste composition includes the following components (A), (B), (C) and (D). They are: (A) 0.1 to 2.0 mass% of a low water-soluble powder selected from a fatty acid divalent metal salt (A-1) derived from a 12-18C saturated fatty acid, a fatty acid acyllysine (A-2) having an acyl group derived from a 12-18C saturated fatty acid, and a fatty acid acyltaurine divalent metal salt (A-3) having an acyl group derived from a 12-18C saturated fatty acid (B) 1.5 to 15 mass% of hydrogel particles having an average particle diameter of 50 to 500 μm (C) water and (D) a binder.COPYRIGHT: (C)2013,JPO&INPIT【課題】露出した象牙質の表面における象牙質細管の開口部を即効的かつ充分に封鎖して、象牙質知覚過敏症に起因する痛みを効果的に防止することのできる歯磨組成物を提供する。【解決手段】次の成分(A)、(B)、(C)並びに(D):(A)炭素数12~18の飽和脂肪酸基を由来とする脂肪酸二価金属塩(A-1)、炭素数12~18の飽和脂肪酸アシル基を由来とする脂肪酸アシルリシン(A-2)、及び炭素数12~18の飽和脂肪酸アシル基を由来とする脂肪酸アシルタウリン二価金属塩(A-3)から選ばれる水難溶性粉体 0.1~2.0質量%、(B)平均粒径50~500μmのハイドロゲル粒子 1.5~15質量%、(C)水、並びに(D)粘結剤を含有する歯磨組成物。【選択図】図1
