No, but I seem to recall he mentioned brushing with it, along with a bunch of other tips. I've been swishing with coconut oil and it is indeed helping their whiteness.
What I found fascinating in the book was the discussion of the hazards of bleaching teeth (both by dentist and OTC) and other cosmetic dentistry procedures. He says modern dentistry is dead wrong. For that alone, he deserve applause, especially since he himself is a dentist. Takes courage to go against the Old Guard.