US Patent 7979947 Toothbrush

A toothbrush having a head with a first end and a second end with peripheral edge regions extending between the first end and the second end is described. The head includes a first surface and a second surface opposite the first surface. The first surface includes raised portions and depressed portions, wherein the depressed portions are adjacent the peripheral edge regions. A first plurality of cleaning elements protrude from the first surface, and a second plurality of cleaning elements protrude from the first surface. Each of the first plurality of cleaning elements protrudes from a depressed portion and has a cross section. Each of the depressed portions has the same cross section as each of the first plurality of cleaning elements.