@soblessed After many years of dental work not unlike your own, one of my children suggested that that is where I received my gift of MAC. I did research and it is documented about the water supply in dental offices and mycobacterium , and it certainly makes sense. I was a teacher for forty three years, and all my stress was in my mouth. I started having issues when I had dry mouth as well from Elavil for migraines. I was always sucking on something in class or tucked a wad of gum in my cheek. My teeth had tremendous stress as I was working on my masters degree at that time, teaching, and in the middle of our first adoption. Now, thirty three years hence, I have seven implants and partials. I had an angry kindergartener knock out my own beautiful top teeth! I probably paid for my dentist’s BMW and his Mercedes by the time I was done. My MAC is gone as well. Unfortunately, it was replaced with other unwanted bacteria. C’est la guerre. Best, Irene5