| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide means capable of fully cleaning both of tooth faces and interdentium sections allowing smoothly invading interdentium sections of bristle tufts positioned at the width direction center part. <P>SOLUTION: A toothbrush 10 includes: a handle 11 having longitudinal shape; a head 12 provided on a tip end of the handle 11; side-edge bristle tuft groups 14 having bristle tufts 13 respectively provided on the width direction both side-edge sections of the head 12; and center bristle tuft groups 15 having longer bristles 13 than the side-edge bristle tuft groups 14 interposed between the side-edge bristle tuft groups 14. In the toothbrush, a plurality of longer bristle tuft groups 16 having longer bristles 13 than the side-edge bristle tuft groups 14 in which the center bristle tuft groups 15 are disposed apart from the longitudinal direction of the head 12, and shorter bristle tuft groups 17 having shorter bristles 13 than the longer bristle tuft groups 16 provided between mutually adjacent the longer bristle tuft groups 16 are provided. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
