I've just had the second stage of my crown fitting done (back molar).
I have bad dental phobia and got through it fine, thanks to sympathetic dentist.
My biggest fear in dental treatment is the drilling and that it may hit an inadequately numbed nerve (some horrendous experiences in childhood/youth). For the first stage I was very throroughly numbed, more so than for a filling. As the treatment progressed the dentist topped up the aneasthetic a couple of times. I didn't feel anything at all, just some pushing and prodding from the impressions.
It took a long time in the chair, but the actual drilling time was short, most of the time in the chair was for impressions. The drilling itself I found MUCH more manageable than the drilling needed for a filling or filling replacement.
Afterwards I was tired and my jaw was achy from being open a long time. I had some bruising from the injection sites and the gum around the treatment site was sore for around ten days. All quite manageable with painkillers.
The second stage, having the real crown fitted was yesterday. I was numbed up, the temp crown removed easily, tooth cleaned up and crown fitted, adjusted and glued. Took 40 minutes and has been totally pain free since yesterday.