Erythritol, a widely used sugar substitute found in many low-carb and sugar-free products, may not be as harmless as once believed. New research from the University of Colorado Boulder reveals that even small amounts of erythritol can harm brain blood vessel cells, promoting constriction, clotting, and inflammation—all of which may raise the risk of stroke.
I also don’t have any studies, but I am aware of xylitol being used in toothpaste, chewing gum, etc., usually with the “assists in the prevention of tooth decay” type of tagline.
Xylitol is different from erythritol, but both are “sugar alcohols” so further study would be needed
I believe that is just because chewing gum increases salivation which helps keep bacteria in check