Integrated disposable toothbrush including a detachable toothpaste cartridge

A system including a combined disposable toothbrush and detachable toothpaste cartridge, the system comprising:

• (a) a hollow cylindrical handle portion comprising:
• (i) opposed proximal and distal bases and a cylindrical sidewall disposed therebetween, the proximal each base having an axial recess therein, an exterior surface of said proximal base proportioned for engagement between a thumb and a finger of a user, said distal base including an outlet passage therein;
• (ii) a threaded rod having a proximal end rigidly secured within said recess of said proximal base;
• (iii) a cylindrical push block having a circumferential surface in fluid-tight frictional communication with an inner surface of said cylindrical sidewall and having an axial channel in thread-fit co-action with said threaded rod;
• and
• (iv) a paste-like dentifrice disposed between said push block and said distal base, in which rotation of said proximal base by the user rotates said threaded rod to advance said push block thereby urging said dentifrice through said outlet passage of said distal base;
• (b) a detachable brush portion comprising, at a distal end thereof, a head including brushing bristles and an internal channel extending longitudinally therethrough and having an outlet in communication with said brushing bristles;
• and
• (c) coupling means for selectably attaching and detaching a distal end of said handle portion to a proximal end of said brush portion,
• whereby said brush portion thereof may be readily changed when said system is used by a different user within a household, and said handle portion may be detached and disposed of upon exhaustion of the supply of dentifrice therein, and replacement thereof by an unused handle portion.