“I did not even realize what absolute crap all of the other toothbrushes I've ever used were. The only time my teeth feel this clean and smooth is when I go to the actual dentist. It definitely is INTENSE. Especially when brushing the back side of my front teeth my hard palette can not handle, but it's SO WORTH IT. I haven't been using it long enough to see any whitening results, but regardless 10/10 recommend!!!”