Before trying the dental appliance, I was a light sleeper and woke up each morning tired, with a dry mouth, and sinus congestion. My wife complained of my snoring. Since trying the dental appliance, my sleep is much deeper, even having dreams again. I wake up feeling refreshed (after 8 hours or more of sleep) no dry mouth and little to no sinus congestion. My wife says I rarely snore anymore. My oxygen levels went from the low 90’s to the upper 90’s. I look forward to more benefits over time with the increased oxygen intake and the deep, restful, restorative sleep. Thank you, Wayne H.