Can anyone suggest a mouth rinse or toothpaste that might reduce the extreme sensitivity to hot or cold foods?   

I had a pocket forming where food would foul and caused inflammation & bleeding of the gum between molars. Regular professional teeth cleaning in intervals of 3 months has brought my gums to a very healthy state! A friend of mine started to show bad breath and when he flossed it would start to bleed between molars - very similar to what I had ...