Hi there - I have to say.... Wow... I had problems for years with a broken molar I would have it filled it would fall out... It was quite jagged, my tongue had built up a thickened patch where this molar was. The dr. removed the patch and biopsied it (came back thickened skin - like a callous) likely to prevent my tongue from further damage by the molar ( our body does have its own protective mechanisms) anyway the tongue healed then a few years later I had a cap put in... That's when I really started having trouble, not a lot at first, but my tongue was sensitive. For ages, this went on then I finally went to the dr. After having the cap filed down a few times, the entire underside of my tongue was inflamed - the dr took a sample, came back - inflamed tissue - I don't think he went deep enough because I could feel a small lump in my tongue same area as my initial callous - regardless - I had the tooth filed again had allergy test for foods, took probiotics, you name it. I went back to my dentist, had another cap put in on the molar next to the bad one. Things got really bad after that - finally (after a few months I went to another ENT - he said it looks like lichen planus but wanted to biopsy the area took out a chunk of my tongue and sure enough it was SCC - I was doing research on lichen Planus - they think it can be caused by or mimic an allergy to the amalgam used in fillings caps etc.... So there might be your connection. And some scientists poo poo the theory though it's been tossed about for years - that long term chronic irritation can cause cancer... Well guess what that's the etiology of lung cancer, and oral cancer people say smoking, and drinking heavily can cause OC and smoking for lung - well yes both are irritants that over time can cause cancer.

My point - You can't rule anything out, but please don't take this as me saying you have cancer or will likely get it.... That's not the intent I was just throwing a few connections your way, your biopsy will give you the answers you need but either way - diligence, even after an all clear, and careful monitoring are important, good luck an I truly hope you are just passing through. Fingers crossed... Oh and of course welcome!