Hi KB, I had all 4 of mine removed the same day, a few years ago. They weren't impacted or anything like that; they had grown in just fine, but the brushing was an issue because they were so far back, I literally would gag several times everytime I brushed my teeth in trying to reach them effectively.
Everyone has a different tolerance for pain, but my experience really wasn't as bad as I thought it was gonna be. Just be sure to follow the post-op advice to the letter and you should be fine.
Anya