I was fine going to the dentist until my family moved when I was 7. We changed dentist and that's when the trouble started...
The new dentist was like Laurence Olivier's character in Marathon Man, only not as friendly!
On my very first appointment, he decided to do a lot of drilling without anaesthetic. It hurt and I told him so but he just told me not to be 'a big baby' (I was only 7 years old, for heaven's sake!) and just carried on drilling. I ended up fainting, so of course - he carried on... (obviously a believer in swooning as a form of pain relief).
I had some freaky nightmares about a lunatic with power tools performing surgery inside my head and then came round to discover that there
was a lunatic with power tools performing surgery inside my head and promptly fainted again! When I came round the second time, he was finished and my mother was standing over me asking what had happened. He told her some crap about me misbehaving...
I wasn't keen to go back there again but I needed a couple more fillings and reluctantly allowed my mother to take me back about a month later. I wanted her in with me but sado-dentist man wouldn't allow it. He came towards me with his big old-fashioned drill and I panicked and wouldn't open my mouth. He screamed abuse at me which traumatised me even more and it ended up with his knee on my chest and him trying to force my jaws open. I started screaming and my mother ran in. He reluctantly allowed her to stay while he filled the teeth.
A few weeks after that visit a girl ended up in hospital after her mouth was butchered by that man. We never went back to him.
Even now, 46 years later, I find dental treatment traumatic. I didn't go for 30 years and then got two rotten teeth and an abcess. I fainted having those teeth pulled 9 years ago. I currently have 3 broken teeth needing attention.
I suppose that you could say that I'm not right keen on going to the dentist...