Abstract: The toothbrush includes a handle and a head, the handle forming two bodies (1) and (2) provided with overlapping sectors (3), which permit the axial displacement, one with respect to the other, the body (1) constituting a container (4) for the toothpaste, which can be projected toward the exit (14) through a duct (7-8), in which are defined two sectors, one rigid (7) and the other flexible (8), the latter of the bellows type, sector (7) ending in a one-way valve (12-13), which tends permanently toward the closed position and which, while permitting the passage of the toothpaste toward the exit (14), blocks the return of the toothpaste in the backward direction axially of the body (1). An embolus (15) fills up the inside of the body (1), compensating for the dose of toothpaste which is supplied, while in the exit (14) a manually operated valve (17) is incorporated in the cylinder provided in an diametral orifice (18), which can be made to align with or not align with the exit orifice (14).