Going to see the dentist is a very common fear in mainstream society and for goo reason. It is very invasive. In fact, I've heard people describe it up the with oral R....well I guess Larry already touched on that.
I too fear the dentist, sticking different metal tools and objects into my mouth(shudder). I have not gone in maybe 7 yrs.
One Idea, that may avoid the confession of being a survivor is just having a space on the intail paperwork asking you if you are unconfortable and having a scale of 1 through 10, 1 being a tiny bit uncomfortable and 10 being terrified and since the paperwork is confidecial you could explain that you are not a happy camper with out having to go into history too much.
"Terrible thing to live in Fear"-Shawshank Redemption
WOR Alumnus Hope Springs 2009
"Quite a thing to live in fear, this is what is means to be a slave"