I Hate Going to the Dentist

I haven't been to the dentist in years, I don't really have a phobia of him - I'm just embarrassed to go back. A few years ago when I was last at the dentist he was poking underneath my tongue this something cold, so I clamped my jaws shut and bit him. I didn't have any intention of injuring the poor fellow but I got a shock because it was cold and it was hurting me. I haven't been back since because I'm fearful that he will remember me ir refuse to serve me. I think I need to change dentists...