I had been prescribed a C-cap for sleep apnea but instead went to Dr. Neinhaus, best move I ever made I stopped breathing in my sleep 70% and snored so bad others could not sleep, after his procedures I sleep quietly can breath on my own all night no more problems. Would recommend this to anyone...... recovery was a little rough but end result was beautiful. No mask no problems restful natural sleep like never before Thank You David for taking care of my problems.