I've always been pleased with my trips to Dr. Long's office until the last two trips. The last time my teeth was cleaned my mouth was very sore for days. Yesterday I asked for gas, the mask was place on me, but I still felt everything that was happening to me. I felt as if I was not receiving any gas. It usually makes me so calm that I feel nothing. Not so yesterday. I was sorta out of it because I take pills that Dr. Long prescribes for me to take before coming to his office. But definitely knew everything that was going on yesterday. I have always been terrified of going to the dentist office. I hope my next dentist visit will be better.