The present invention addresses the problem of providing an oral composition having the characteristics of suitable abrasive power and high ability to remove staining from a tooth surface. Through the present invention, an oral composition is provided containing diamond particles and abrasive silica particles, the diamond particles having a median size (d50) of 2.5-3.5 [mu]m, and the abrasive silica particles having an RDA of 50 or greater.本發明是以提供一種口腔用組成物為課題,該口腔用組成物具備下述特徵:牙齒表面汙垢去除力高且具有適切的研磨力。依據本發明,可提供一種口腔用組成物,其含有鑽石粒子及研磨性二氧化矽粒子,前述鑽石粒子之中位徑(d50)為2.5~3.5μm,前述研磨性二氧化矽粒子之RDA為50以上。
