| 摘要 |
PROBLEM TO BE SOLVED: To provide a tooth brush where appearance discrimination property and using feeling is close to those of single implantation, costs are low, bristle coming-off is supresed, and operability, intradental advancing property and a dental plaque removing function are excellent in the toothbrush utilizing plane line implantation. SOLUTION: In the toothbrush obtained by two-folding a bristle bundle 11 obtained by bundling a plurality of brushes 12 with a plane line 14 and striking it into an implantation hole 13 for fixing, when the maximum width of a brush cross section where the bristle bundle is to be implanted is set to be (d) and the middle point position of the maximum width (d) is set to be the center (c) of the brushes, a distance between the center (C) of a brush 12 most separated from the plane line 14, and the plane line 14 is in the range of L≤1.5×d. Further, the brushes 12 fixed to the hole 13 are arranged in a line along the plane line 14. COPYRIGHT: (C)2004,JPO&NCIPI
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