Oral B S15.523 electric sonic toothbrush
Oral B S15.523 - There is a saying "toothache is not a disease", but if the pain becomes so terrible we feel for it. Everyday we brush to protect our teeth from germs. Medical studies have shown that only by adhering to brush your teeth more than two minutes will play an effective cleaning of the teeth. It is difficult to adhere to brush your teeth for more than two minutes, manual brushing for two minutes causes arm ache. Clean teeth rely on the physical friction between the bristles and teeth, this traditional way of brushing cause damage in gums. Official Price: $ 499 Sonic toothbrush working Sonic toothbrush generate a high frequency ultrasonic vibration, and this vibration is a kind of acoustic energy. The vibration frequency lower than 20000 Hz (maximum human auditory) belongs to ordinary sonic, vibration frequency over 20,000 Hz belong to ultrasonic. This ultrasonic vibration is generated using a transducer installed in the toothbrush. Vibration generated by ...