Fluid driven toothbrush

A fluid driven toothbrush comprising:

• a brush-mounting shank defining a fluid channel and a disc-receiving chamber that is in fluid communication with said fluid channel and that is defined by a chamber-defining surface;
• and
• a brush head including a disc that extends axially and rotatably into said disc-receiving chamber and that is rotatable about a rotation axis, said brush head further including a plurality of angularly disposed vanes centered at the rotation axis, protruding axially from said disc, and disposed in said disc-receiving chamber;
• wherein each of said vanes has a free end face in sliding contact with said chamber-defining surface of said disc-receiving chamber;
• and
• wherein said fluid channel has a curved discharging end section terminated at said disc-receiving chamber and extending in a tangential direction relative to said disc so as to generate a tangential flow in said disc-receiving chamber to push said vanes in sequence to thereby rotate said disc.