Your dentist, I presume, has an xray of the roots of the tooth and knows that it is going to be a simple one to remove. Why it is being removed - why is it not saveable do you know ? Sometimes if teeth are weak from a cavity/cavities then they can break whilst being removed, which makes it slower as then the roots are removed separately. I wonder if your dentist is preparing you for this possibility by bringing in the idea of you possibly wanting sedation? However, as he says ' 5 seconds' then I would presume he doesn't think anything a bit more complicated is likely to happen. It can be astonishingly quick having one tooth removed. My daughter had 4 premolars removed as part of orthodontic work, and the longest time of the appointment was just waiting for the anaesthetic to have fully taken. Then the dentist put something around the tooth and wiggled it in various directions and it popped out in literally less than a minute. I was watching and actually said 'So, is that it ?????' Quicker than a filling - I'll say - no comparison.

I had a wisdom tooth removed a couple of months ago and I can recall that you can feel a bit of strange pressure just as it comes out and you can hear it being wiggled in the jaw, but both of those lasted seconds.