| 摘要 |
An oral hygiene device includes a handle, a head coupled to the handle, a substantially planar base disposed on the head, and a plurality of cleaning elements projecting from the base. The plurality of cleaning elements are characterized by at least two different geometries, and at least some of the plurality of cleaning elements are generally oblong cleaning bars. Adjacent cleaning elements define at least one channel that extends in a direction generally transverse to a longitudinal direction of at least some of the oblong cleaning bars.
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