Entire top row of teeth extracted 20 months ago and replaced with a typical denture. I seldom brush my existing lower teeth or either gums because any mint resulted in an extreme burning sensation. Began making use of children's toothpaste and soft brush. I'm able to brush the roof of my mouth to help remove the remnants of adhesive. I smoke cigarettes and marijuana. I am unable to endure the mildest of spiciness. Any exposed part of the inside of my mouth is on fire. Menthol/mint candies or chocolates feel "warmer" as opposed to a cooling sensation. Yes, I do realize the amount of bacteria I am hosting. But, could there be another explanation for "total" oral intolerance to heat?