Major Bone Grafting. Bone grafting can repair implant sites with inadequate bone structure due to previous extractions, gum disease, or injuries. The bone is either obtained from a tissue bank or your own bone is taken from the jaw, hip or tibia (below the knee). Sinus bone grafts are also performed to replace bone in the posterior upper jaw ... May 25, 2014 · Hi, I had a lower molar (#30) extracted a week ago after many tests and consults. It had been bothering me for some time. Tooth was cracked vertically and there was a small infection below it. It took a full week for the pain to "settle down" after the extraction.