I am sorry I don't have an answer for you about whether insurance will cover the procedures. I don't have insurance myself anyways.
I have at least two toxic root canals I know of and also suspect cavitations and additionally I have 10 or so mercury amalagams. One the root canaled teeth is associated with the adrenal gland (lower right lateral incisor, #26 tooth and is a contributing factor to the stage 3d adrenal fatigue and severe fibromyalgia that has debilitated me.
If you wouldn't mind, would you share how much the evaluation, testing, X-rays, surgeries, and crowns will cost?
you may PM me if you don't wish to post in open forum. thanks