God Beth. That was my biggest fear before my surgery. I hate dentist not because of the pain but having somone's fingers and metal tools in my mouth. Like a child, I have to have the gas before and it really doesn't work other than knowing I can't get up and run. That is the only way I can deal with dental work.
I think times have changed since we were kids though and thinking back those times seem like the Dark Ages compared to now. With my surgery, I was out. The anesthesiologist asked me which one I wanted, out or awake, and then aked me if I was ready and I told her yeah and the very next thing I knew she was asking me if I felt OK and I was done. The anesthesiologist gave me some chillout medicine through the IV in the preop area and about a 1/2 second later the world could have ended and I would have cared less. If it's any consellation with my phobia of being opened up and considering it was my first surgery ever, the chillout medicine took away all my anxiety and all seemed right in the world at the time.
BTW, I obsessed, starting about 2 weeks before the surgery, over being awake and feeling everything but helpless to say anything or give any indication or communication that I could feel and hear everything. I actually had nightmares about it. So I can only imagine but would rather not think about what you went through at 5 or 6. Wow.