| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a toothbrush having a plurality of cleaning functions suited to each of a plurality of parts in the oral cavity, allowing a user to easily selectively use each cleaning function, and capable of significantly exerting each cleaning function.SOLUTION: The toothbrush includes a brush part 30 formed by filling a bristle bearing surface 20a with a plurality of bristle bundles. The brush part 30 has a plurality of stepped bristle bundles comprising: first bristle bundle parts formed of bristles with optional length; and second bristle bundle parts lower than the height of the first bristle bundle parts. A second cleaning surface Pformed by continuing tip ends of all the second bristle bundle parts has undulations undulated at least any of the length direction and width direction of all the bristle bearing surface. A first cleaning surface Pformed by continuing the tip ends of all the first bristle bundle parts has undulations that are not similar figure to that of the second cleaning surface Por a surface in parallel to the bristle bearing surface.</p> |
