I had a severe fear of dentists and managed to avoid going for about 20 years. I took severe toothache in the finish up and couldn't avoid it any longer so made an appointment, went there absolutely shitting myself, expecting to be lectured on not having regular checkups, and having God only knows how much repair work to be done.
Instead, I was told my teeth and gums were better than average for someone of my age (surprising considering my sweet tooth and cigarette consumption), I needed one major filling in the tooth that was painful, she said it borderline case for needing root canal work, two minor fillings and buff and polish job. All passed of without any really incident, the fillings were genuinely painless, I didn't even feel the injections and getting my teeth polished was the worst part really, a horrible sensation.
Well, the worst part was actually paying nearly £400 to have all that done. I've since been back for the six monthly checkup and can honestly say I don't mind going. I've no idea what I was so scared off in the first place. My dentist is a really nice lady and much nicer than the dentists I remember from my youth.