| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tooth brush easily handled by an unskilled user at technique for cleaning the own oral cavity and a user for performing finishing cleaning for another person.SOLUTION: A toothbrush 1 includes a handle part 6, a neck part 4 extended from the handle part 6, and a head part 2 provided at a tip of the neck part 4, where a plurality of bristle bundles 22 are placed on a placement surface 20 of the head part 2. The handle part 6 includes two or more narrowed parts that are gradually contracted from a rear end 8 towards the neck part 4 and after that, gradually enlarged.</p> |
