Interesting article. Thanks for posting! I think that probiotics have tremendous potential, and dental health is a use case I hadn't considered.
Maybe a little off topic, but:
My favorite part of this paper is that it finally finds a use for old people
I assume that was tongue in cheek, but for some reason, it reminded me of this: Brazilian Kids Learn English by Video Chatting With Lonely Elderly Americans.
Haha. Yeah it was a joke, but it helps to put a bit of levity into science to make it more entertaining. Nice link. I hadn't heart of that program before.