Hi. I had molar #15 extracted two weeks ago during a very bad infection in the jaw. Several days after the procedure the pain subsided and the swelling began to go down. I am now left with a bony protuberance coming out of the upper side of my gum by my jaw line. This is not a splinter left from the root. It is much larger and not in the same area. Also, the root broke during extraction. I will be seeing an oral surgeon for the broken root because of the proximity to the maxillary sinus. Most recent x-ray does not explain this piece of horizontal bone, approximately 4 mm long. What is this? It is extremely sensitive to cold, but otherwise pain free.