| 摘要 |
PROBLEM TO BE SOLVED: To provide a V shape brush for easily brushing a back tooth or the rear surface of the tooth which is difficult to brush. SOLUTION: The brush part 2 of a toothbrush is bent in a V shape 3, so as to obtain an angle suitable for brushing. Consequently, the risk of swallowing by a small child is reduced. COPYRIGHT: (C)2006,JPO&NCIPI
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