Whether the chewing gum actually maintain the teeth or not, I can not say, since I'm not a scientist, dentist or the like. But I have seen a report of the SWR (to find the sweet miracle on You Tube * under xylitol), in the self-experiment showed the reporter, who was accompanied by a dentist, no improvement. So be it, I have gum with xylitol rather than with a conventional sugar or sugar substitutes such as aspartame. What bothers me about this product is that not specified from which the xylitol was obtained: from Finnish wood or of Chinese corn.