| CPC A46B 9/023 (2013.01) [A45D 24/16 (2013.01); A46B 15/0059 (2013.01); A46B 5/00 (2013.01); A46B 2200/104 (2013.01)] | 21 Claims |

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1. A brush, comprising:
a brush head;
wherein the brush head comprises:
a first plurality of teeth disposed along a first side of the brush head, wherein each of the first plurality of teeth has a first tooth tip;
a first plurality of channels extending inwardly in a first direction from the first tooth tips, wherein each of the first plurality of channels extend inwardly by a distance of 5.0 to 8.0 mm from the first tooth tips;
a second plurality of teeth disposed along a second side of a brush head, wherein each of the second plurality of teeth has a second tooth tip;
a second plurality of channels extending inwardly in a second direction from the second tooth tips;
wherein the first side of the brush head at least substantially opposes the second side of the brush head;
wherein the first direction is at least substantially opposite the second direction;
wherein each of the first and second plurality of channels has a predetermined depth that extends from a top surface of the brush head through a bottom surface of the brush head; and
wherein each of the first plurality of channels has a channel length defined by the distance between two adjacent first tooth tips of 9 to 11 millimeters (mm).
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