So my cat had a broken tooth (very slightly gross photo) from his days on the street. It was bad, as you can see from the photo (compare the color and length with the fang on the left side of the photo). With the vet's help, we've been keeping an eye on it for a while. So today we had it taken out. Now there's just a hole there, I guess. I haven't actually tried to examine it very carefully. I'm sure he's going to be much more comfortable without it.