Thats interesting, I knew dry mouth was not good but that amyloid plaque is a nasty dementia and Parkinson’s creator.
If you want to increase saliva drink water with apple cider vinegar and or lemon juice in it. Your mouth will produce more saliva to protect the enamel on your teeth from the acid.
My favorite drink is apple cider vinegar and lemon juice in carbonated water its a really refreshing drink better than any pop or soda.