Review (5/5): Works Really Well
This does what it says. I had some dark-colored plaque behind two front teeth, and was skeptical before I used this cleaner. But I followed the instructions, and started with the lowest speed, and did a small area at a time. I went back-and-forth, and applied no pressure. Once I was used to handling it, I went to the next speed, then the one after that, etc., until reaching the highest speed. The dark-colored plaque is gone, I was both surprised and pleased. There is still a slight film left, but it's clear. I will work on that shortly; my main reason for this purchase has been satisfied.