I need to get about 3 cavitations done on the left lower side of my jaw and I'm scared to death to have it done. My dentist says I have an infection. I have two root canals and one socket from an earlier extracted tooth. It's going to be expensive and I'm pretty sure my insurance will not cover it. I should get it done, because four years ago I had ovarian cancer and I think there is a link between the toxins from root canals and cancer.