Me too. It's taken me years to summon up the courage to go. Part of that is that the longer I have left it, the worse I thought it was going to be, because in my mind more must have gone wrong, and so more must need to be done?
I was quite surprised when I finally managed it. There is a lot to do, but it's all stuff that can be done a bit at a time, and none of it is a big thing. There's nothing huge to do.
Can I ask you what it is about the dentist that makes you feel afraid? It might well be completely different to why I am afraid.