| 摘要 |
A toothbrush which includes a brush head having an arched base made from flexible material, and a handle having two coupling rods respectively fastened to two transverse slots on the arched base, wherein the arched base of the brush head has two longitudinal grooves at two opposite lateral sides thereof respectively fitting the upper dental arch and the lower dental arch, and a plurality of bristles respectively installed in the longitudinal grooves.
|
