I have a tooth that had a root canal done years ago and in the last year it has had a big hole out the side of it. There is no pain with it but the gums around it is almost "itchy". Poking at it and causeing it to bleed.

Then about a month ago i started getting scores in my mouth. At first i though it was thrush since i have RA and am on medicine that causes lowered immune system and have had it repeatly before. After being reated for that and it not clear up i went back to doctor who also found a polyp and is sending me to an oral surgyen. Waiting to be seen.

I was wondering if the sores and polyp could be from the tooth getting infected and me not knowing it. Any information or advice would be helpful.