FIG. 1 is a perspective view of the front and one side of the toothbrush showing my new design; FIG. 2 is an elevational view of the front thereof; FIG. 3 is an elevational view of the rear thereof; FIG. 4 is an elevational view of one side thereof; FIG. 5 is an elevational view of the other side thereof; FIG. 6 is a plan view of the top thereof; and, FIG. 7 is a plan view of the bottom thereof.