| 摘要 |
The present invention relates to a bristle (1) for a toothbrush, comprising a cylindrical trunk part (10) extending from the base end (11) toward a distal end (21), and two or more branching parts (20) provided so as to extend from the trunk part (10), the branching parts (20) shaped so as to gradually decrease in diameter further toward the distal end (21), wherein the trunk part (10) of the bristle for a toothbrush has a reduced diameter part (14) that is formed near a branching part base end (22) and gradually decreases in diameter further toward the branching part (20). The branching part (20) is preferably polygonal in cross-section. The present invention is capable of providing a bristle for a toothbrush that has excellent cleaning characteristics on the tooth flank, the masticating surface, and narrow parts; that can be readily manufactured; and that is exceptionally well-suited for manufacturing a toothbrush. |
