TWI851640B

An object of the present invention is to provide a toothbrush that enables an appropriate brushing pressure to be recognized with high versatility. A head portion (10) provided on a tip end side in a long axis direction and having a bristle tufting surface; a grip portion (30) disposed on a rear end side from the head portion; and a neck portion (20) disposed between the bristle tufting surface (11) and the grip portion are provided and a sensing portion (70) for sensing that an external force in a first direction orthogonal to the bristle tufting surface exceeds a threshold value is provided on a rear end side from the bristle tufting surface. A reversal portion (80) that connects a first region on the tip end side from the sensing portion and a second region on the rear end side from the sensing portion, and that snaps, buckles, and reverses as the head portion is displaced on a rear surface side due to the external force exceeding the threshold value, and an elastic deformation portion (90) that is dispose