Electric toothbrush. Electric toothbrushes have a rotating (as here) or vibrating oscillating brush head,powered by batteries. These are marginally more effective at cleaning teeth than correctly-used manual brushes,but are especially useful for people with limited manual dexterity | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4211 px × 4211 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |