err, my humble opinion, but xylitol to me sounds somewhat synthetic. someone correct me if im wrong. it sounds as false as ascorbic acid being called vitamin c.
real xylitol is very probably a combination of enzymatic/vitamins/mineral activity which consists of a number of components (in other words you cant get it in a bottle)
for gum health i found aloe vera juice to be the best thing i have tried so far. theres probably aloe vera oil on the market as well, dunno, which might be more suitable for pulling