Abstract: A toothbrush includes a hollow handle designed to be filled with a pasty product for cleaning teeth and a brush provided with bristles, the handle and the brush being provided with mutually abutting fixing elements. The handle forms a reservoir for the pasty product and comprises a hole for allowing the product to flow through and elements for controlling a piston housed in the reservoir and designed to force the pasty product through the hole. The piston comprises a central threaded hole cooperating with a threaded rod passing through a closure of the reservoir second end and integral with the piston control knob, the threaded rod and the control knob being mobile in rotation and in translation. The toothbrush comprises elements for limiting the piston axial travel, arranged between the piston and the closure, and axially integral with the rod.