| 摘要 |
A toothbrush having a brush section and a handle section that longitudinally extends between a first end distal to the brush section and a second end proximal to the brush section is provided. The handle section includes at least three longitudinally extending edges on the outer surface of the handle section defining at least three longitudinally extending surface areas that each span between two neighboring edges. The at least three edges each twist in the longitudinal direction by a total twist angle lying in the range of from about 80 degrees to about 100 degrees.
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