| 摘要 |
PROBLEM TO BE SOLVED: To provide a toothbrush that is capable of more effectively cleaning interdentally for example.SOLUTION: The toothbrush (1) is composed of a long handle (11), an implantation part (12), and bristles (20) which are implanted in the implantation part (12). The bristles (20) are situated in the center of the implantation part (12) and, of a plurality of bristle bundles (21, 22, 23), comprising the highest top bristle bundles (21), a plurality of central bristle bundles (22) which are arranged side by side with the top bristle bundles (21) in the longer direction (P) of the handle (11), and a plurality of side bristle bundles (23) which are arranged adjacently to the central bristle bundles (22) in the shorter direction (Q). The plurality of central bristle bundles (22) are formed inclined in a chevron shape so as to be higher as they get closer to the top bristle bundles (21). The tip end parts (21T) of the top bristle bundles (21) are in a higher position than the intersection (X) of the ridge lines (R) which are formed by connecting the tip end parts (22T) of the plurality of the central bristle bundles (22).SELECTED DRAWING: Figure 2 |
