TOOTHBRUSH

Provided is a toothbrush with which handle section maneuverability and intraoral maneuverability can be ensured. The toothbrush (1) is provided with an implanted bristle section (11), a head section (12), a neck section (13) and a handle section (14). The thickness t of the head section (12) is 2.0 mm to 4.0 mm. The minimum width W1 and the minimum thickness D1 of the neck section (13) are 3.0 mm to 4.5 mm. A curved surface (13a) with a circular arc contour, the center position of which is disposed on the implanted bristle surface side and the implanted bristle surface side of which is concave in side view, is formed at the back end of the neck section on the implanted bristle surface (12a)-side. The angle θ formed by a line N, which connects the thickness direction center point of the handle section (14) at the center of the toothbrush (1) gripping position and the thickness direction center point of the head section (12) at the center position of the implanted bristle section (11), and a plane P configuring the implanted bristle surface (12a) is 5.0 degrees to 10.0 degrees.