Dear Linda, My daughter had a jaw bone infection a couple of years ago after having her wisdom teeth extracted. There have been people that have developed osteomyelitis(bone infection) after having a root canal done also. If you do a search on this Dental Problems board for osteomyeltis, you should come up with quite a bit of information and posts from people who have posted on this, including the posts I have written with my daughters ordeal with it. Good luck, and I hope you find the answers you are seeking. A bone infection is a serious and painful thing and needs to be diagnosed and treated properly and as quickly as possible. Cindy