Patent ID: 7832811

Claim:
A method of manufacturing a toothbrush comprising: forming a plurality of bristles by immersion in a chemical such that each of said plurality of bristles has a sharp end and a tapered portion extending from said sharp end, said sharp end having a thickness of 0.03 to 0.05 millimeters, said tapered portion having a length of between 3.5 to 10 millimeters in length; setting said plurality of bristles in a head portion of the toothbrush; and grinding the sharp end and the tapered portion of said plurality of bristles with a drum grinder such that the ground end has a thickness of between 0.01 and 0.03 millimeters and such that the ground tapered portion has a length of between 3.5 and 8 millimeters, said drum grinder having a plurality of protrusions extending outwardly therefrom.