[distances]

That's how it works here indeed -- you get them pulled out when they are in the way or start causing problems. I didn't have any specific problems with them, mostly just annoying to clean and some were coming out in a bit weird angles.

I got mine out through my 20s and 30s, and they were all quite straightforward. Local anaesthesia, pull the tooth, done in 15 mins. And like the other commenter said, you're told to take some ibuprofen if you have pain afterwards.