A toothbrush includes a housing having an internally threaded lower end with an air pump positioned therein. Extending from an upper end of the housing is an elongated neck having a toothbrush head at its distal end. A reciprocal button on the housing exterior operates the internal air pump. Any one of a plurality of externally threaded toothpaste cartridges may be secured to the internally threaded lower end of the housing. Toothpaste is automatically dispensed to the brush head by reciprocating the button.