This subject may seem 'off topic' but - at least for me- it has some resonance for some of my own health issues over the years. I had a long standing problem with a root canal and eventually, after 20 years or so of intermittent infection and tenderness of the area (and I might add after my diagnosis with CML) my new dentist suggested he remove it. After reading this article I am very glad I did.
Sandy
http://articles.mercola.com/sites/articles/archive/2014/04/20/root-canal...