My advice is first see an ND and start a detox program my doctor recommended Peridontal Pathogen Nosode, PCHF . root canals effect meridan channels throughout the body something Chinese medicine have know for some time. I had a root canal removed and my ear has been plugged up for a few days I'm going to acupuncture weekly now.
The moment the root canal was removed I noticed immediately my eye sight got better, I no longer need to wear reading glasses anyhow it seems so unreal ! If it effected my eyesight why not your anxiety level look up a chinese meridan graph and dental fillings.