PROBLEM TO BE SOLVED: To provide a composition for oral cavity that has excellent dental plaque deposition inhibitory effect and has also excellent use feeling (inhibition of a bitter taste and a stimulus to an oral cavity).SOLUTION: A composition for oral cavity contains a component (A): cationic germicide, a component (B): cationic polymer, and a component (C): a compound having one or more lactam skeletons selected from the group consisting of a γ-lactam skeleton, a δ-lactam skeleton and a ε-lactam skeleton, and having an acidic group, or salt thereof.COPYRIGHT: (C)2014,JPO&INPIT【課題】優れた歯垢付着抑制効果を有すると共に、使用感(苦味や口腔内への刺激の抑制)にも優れる口腔用組成物の提供。【解決手段】成分(A):カチオン性殺菌剤と、成分(B):カチオン性高分子と、成分(C):γ-ラクタム骨格、δ-ラクタム骨格及びε-ラクタム骨格からなる群から選ばれる一種以上のラクタム骨格を有し、且つ酸性基を有する化合物又はその塩とを含有する口腔用組成物。【選択図】なし
