PROBLEM TO BE SOLVED: To have only a toothbrush which is manually operated. A brush of the present invention includes a head portion having bristles extending in a first direction, an actuator that expands and contracts in a second direction that intersects the first direction, and a vibration of the actuator. A body portion including a connection member that transmits to the head portion and a housing that houses the actuator is included, and a leg portion of the connection member is fixed to the housing. [Selection diagram] Figure 1【課題】 手動を電動にしただけの歯ブラシしかない。【解決手段】 本発明のブラシは、第１の方向に延在する毛部を備えたヘッド部と、前記第１の方向に交差する第２の方向に伸縮するアクチュエータと、当該アクチュエータの振動を前記ヘッド部に伝達する接続部材と、前記アクチュエータを内蔵する筐体とをふくむボディ部と、含み、前記接続部材の脚部は前記筐体に固定されている。【選択図】図１
