The present application is related to U.S. patent application Ser. No. 12/536,619, filed Aug. 6, 2009, which application is hereby incorporated by reference herein in its entirety.

FIG. 1 is a front elevational view of a toothbrush bristle showing our design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image;

FIG. 3 is a bottom, right side perspective view thereof;

FIG. 4 is a front, bottom, left side perspective view thereof; and,

FIG. 5 is an enlarged view of the subject matter claimed in FIG. 4.

The broken lines are included for the purpose of illustrating environment of the toothbrush bristle that forms no part of the claimed design.