False-- for some reason, I've never been afraid of dentists, but that is probably due to my having known relatively pleasant ones. I can be apprehensive if I don't know the person's mannerism or way of conducting a check up, but I haven't run into any bad dentists so far. (Compared to some horror experiences with them, though, I assume I've just been lucky.)
The next poster has slept in a bunk bed before.