A general term for agents or pastes used to brush teeth; commonly refers to tube toothpaste.
毎朝と夜、毛先に歯磨き剤をつけて歯を磨く。
Every morning and night I put toothpaste on the bristles and brush my teeth.
子ども向けのフルーツ味の歯磨き剤は泡立ちが少なめだ。
Children's fruit-flavored toothpastes tend to produce less foam.
歯医者さんが虫歯予防のための歯磨き剤を勧めてくれた。
The dentist recommended a toothpaste for cavity prevention.