Motorised toothbrush heads. Electric toothbrushes have a motor that vibrates the toothbrush's head. A toothpaste tube is seen at far right. Regular brushing helps to prevent tooth decay | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Knapton, Chris |
Bildgröße: | 3959 px × 2901 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |