I Stopped drinking our city water. A few have commented on certain kinds of bottled water not being good for their mouths. Smart water is suppose to be good. You might research that. I too had a detailed list of what happened when and then this happened in my efforts to figure out my Burning mouth. Good work girl! Have you had allergy test for dental materials? I did that twice when I had the metal taste. Has your neurologist or doctor given you baclofen small dose 5mg 3 to 4 times daily. That was calming