Effective treatment for my sleep apnea I was diagnosed with moderate sleep apnea, with O2 levels falling to 83% for 40 minutes over the course of a night. After using the SleepMD device, a second tests showed minimum O2 at 88% for only 0.3 minute during sleep, averaging 94%. The clinic pronounced that as acceptable, with no further treatment (CPAP) required. I should add that this device costs 95% less than what a lot of dentists want for a similar device. Unfortunately, the upper plate broke after two months. Dr. Hamburg stepped up and provided a repair kit as well as a Zoom session to see that I made the repair properly. I am thoroughly impressed with SleepMD and Dr. Hamburg.