Ultrasonic toothbrush. An ultrasonic toothbrush operates by generating ultrasound waves to remove plaque and kill bacteria. Shown is a unit made by Emmi Ultrasonic, positioned next to its charging base to show contact-free inductive charging parts. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Turtle Rock Scientific LLC |
Bildgröße: | 6923 px × 4612 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |