My mom and both my brothers use the CPAP machine and they say it helps and very low noise. My mom just got a night guard type replacement for the machine. She is sooooo happy not to have to use the machine any more. She said there was a brochure in the doctors office so she asked and luckily the insurance covered it. I don't know what its called though but it looks just like a night guard except there's a metal piece in the front. Hope this helps.