@arbez I went through something similar. I had broken my front teeth as a kid, and as an older adult, I had a 4 unit bridge and every tooth was present and all had old root canals. A root canal failed and I thought it was a sinus problem and it had gone on for months. When I felt a soft spot in my hard palate, I knew what it was. It ate a hole in my jaw bone and the tooth didn’t loosen or fall out because it was part of a bridge. I had oral surgery and apicoectomy with bone graft. A couple years later, another root canal began to fail. I had all 4 removed and replaced with Zirconium implants and a new Zirconium bridge. That also improved my health and my asthma got better. I am somewhat reactive to metals in my body and all that prior infection has been cleared. It was a long expensive process, but it was worth it.