We purchased one of these units for home use for my Son. He used one in the office prior to us buying one. I know that Neuromuscular dentists use this type, I'm not sure if any other dentists do or not. The cost for us was around $585, but it sounds like some dentists charge as high as $900 for them. Before buying one, I'd make sure that it worked for you. My Son uses it and it helps him, as for myself...it almost seems to make me feel worse. Hope this helps!