Just keep them charged up and then brush away. Clinical studies show that a sonic toothbrush removes plaque more effectively than normal electric toothbrushes. Replace your toothbrush every three or four months, or sooner if the bristles are frayed. This was followed in 1944, when Dr. Office - Telephone: Similar to using the toothbrush on the TV remote control, I use it for the phone, the fax machine, and other electronic equipment that I do not want to accidentally change any settings on. Some studies reported that the toothbrush on the total number of micro-organisms living in 0-100000000 between the results of some studies is 10000-1000000.
Here's more information in regards to
link take a look at http://szczoteczkaelektryczna.pl/szczoteczka-elektryczna-oral-b-vitality-3d-white-luxe/
