According to my dentist and Xrays, I have an extremely tiny mouth and my back teeth really press against my cheek, making it absolutely impossible for a toothbrush to reach my wisdom teeth. Even the dentist and hygenists say my mouth is very difficult to work on because of the size inside. Anyways, I had to get my right wisdoms removed because they started to get really sore.
A few weeks after that my left wisdom tooth cracked in half, because of the decay. I had to go to the dentist and get it filed down (the person that did extractions wasnt in that day) because it was cutting the inside of my cheek every time I moved my mouth at all. It's still like that, and bit by bit it keeps falling apart. I have roughly half a wisdom tooth sitting in there right now, but my extraction is set for January so it's coming out as well.