| 摘要 |
PROBLEM TO BE SOLVED: To provide a toothbrush which can improve the cleaning effect not only for interdentium sections and tooth cervix sections but also for the smooth surfaces of teeth as well. SOLUTION: In this toothbrush 10, a tuft 15 which is constituted by bundling bristles 14 is respectively planted in a plurality of planting holes 13 on the planting base 11 of a toothbrush body 17. The brush surface 18 for which the distal ends of the bristles 14 constituting the tuft 15 continue is equipped with a continuous gentle wave-form uneven shape 20. In this case, the continuous gentle wave-form uneven shape 20 has a height difference d of 0.5 to 1 mm as viewed from the side surface side which faces the shorter side direction Y of the planting base 11, and a value s/d for which an interval s between adjacent protruding sections 19 is divided by the height difference d is 4 to 10. Also, the distal end sections of the bristles 14 which constitute the tuft 15 are formed into a tapered-in taper-shape section 21 which has a sharp bristle tip. COPYRIGHT: (C)2009,JPO&INPIT
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