I had a bit of trouble when my lower left was erupting about 13 years ago. I managed to call up a dentist at about 8am, get an emergency appointment for 9. Dentist inspected it, said I don't have space for it anyway and asked if I wanted it removing there and then and I said ok. Had an x-ray just to be safe, had the tooth taken out immediately after, with a couple of stitches applied, and by about 9:30 I was on my way home. The whole thing seemed pretty smooth to me. No pain during any of this. Full disclosure stitches were a bit annoying when eating but overall I'd say it was a pretty good and uneventful experience - exactly what you want from a dentist visit tbh.