I had my right central incisor broken into half in a minor sport injury around 10 years back. For this, a root was canal done, the broken tooth was trimmed and a cap was placed over it. Couple of years after this I started having digestion. wheezing, skin issues and food allergies. I had my cap replaced recently with a non metallic one but the root canal is still intact. Is there any scan/test apart from CBCT which can help figure out if the root canal/metal is a problem/infection/allergy.