| 摘要 |
An oral hygiene device 1, such as a toothbrush, comprises a head 20 and a handle 10. The head 20 includes a cleaning element 30 and apertures 41 for the receipt of bristles. The cleaning element 30 comprises upstanding elements 33 which comprise plastic and silica granules in a ratio of silica to plastic of less than 70:30. The device may also include a polishing pad (35, figure 1) having a region of arcuate ribs (36, fig 1) and a region of an undulating surface (37, fig 1). The application also describes a method of manufacturing such a device, comprising the steps of mixing granules of a carrier plastic with granules of silica to form a first mixture, extruding the carrier mixture under heat and pressure to produce a cleaning element suitable for use in an oral hygiene device. |
