| 摘要 |
<p>A device for cleaning teeth comprises a resilient element (1) of generally diamond-shaped cross-section having two inclined upper faces from which bristles (11) extend upwardly in a generally vertical direction and two inclined lower faces from which bristles (11) extend downwardly in a vertical direction. The tips of the bristles that extend upwardly define a valley (12). The tips of the bristles that extend downwardly define an inverted valley. The device may be chewed to provide a cleaning action on teeth.</p> |
