Hi, My former dentist did crowns over failed & incomplete root canals. Right after, I immediately started having problems. I developed numbness in my head & face & eyes, tinnitus in both ears and fullness feeling, and TMJ . I kept being told that because crowns looked great, things were fine. Then, I couldn t put pressure on them. After three years, I got them out and with severe infections in them. I took Clindamycin and am now on Zithromax . How will I know when it is healed & if it has gone into other areas of my body because my sinuses go down right behind the roots, farther than normal or to my brain or heart?