What is the most expensive power toothbrush?
In general, power toothbrushes with more advanced cleaning technology (i.e. sonic or rotating-oscillating) will be the most expensive. These toothbrushes will also have better batteries that last longer between charges, and they will offer more options in terms of brushing speed and brush head design. They tend to have built-in timers (with pacing assistance), built-in pressure sensors and occasionally come with brush head sanitizers. The most expensive power toothbrush we've come across is the Sonicare DiamondClean rechargeable sonic toothbrush, which retails for approximately $220. However, we don't think it is necessary to spend over $200 when you can get an excellent power toothbrushes like the Oral-B ProfessionalCare SmartSeries 4000 for around $100 - $130.