I had posted a quote from a book I was reading in the post titled "Another Possible Reason Oil Pulling Works" which is a theory that resonates with me. After reading that, I felt like I had an aha moment.
Later I read your post and it sounds like lymph theory connects as well. (Has some similarities) But I want to research the lymph system connecting to the mouth a little more. Anyway you might find my earlier post of interest. I put the link in this one if you would like to take a look at it. Forgive me if you've already read it.
I will be sure to post what I find out. And please also continue to share your insights as well. They are much appreciated.