PROBLEM TO BE SOLVED: To provide a dentifrice composition containing a cationic bactericide that exhibits a high bactericidal effect originating from the cationic bactericide and has good general properties such as formability of a dentifrice preparation, a feeling of cleaning and a feeling of use.SOLUTION: The dentifrice composition comprises (A) a cationic bactericide, (B) calcium carbonate or calcium phosphate as an abrasive agent and (C) thickening silicic anhydride, where the content of the component (C) is 0.5-2 mass% and the mass ratio of the component (C) to the component (A), (C)/(A), is 10-50.COPYRIGHT: (C)2012,JPO&INPIT【課題】カチオン性殺菌剤由来の高い殺菌効果を奏し、かつ歯磨製剤の成形性、清掃感及び使用感といった一般特性も良好な、カチオン性殺菌剤含有の歯磨組成物を提供する。【解決手段】(A)カチオン性殺菌剤、(B)研磨剤として炭酸カルシウム又はリン酸カルシウム、及び(C)増粘性無水ケイ酸を含有し、(C)成分の含有量が0.5~2質量%で、かつ(C)成分/(A)成分の質量比が10~50であることを特徴とする歯磨組成物。【選択図】なし