There is speculation out there as to whether or not artificial sweeteners can contribute to some cancers. A friend whose sister died two years ago from oral cancer had no history of ever using any tobacco products, the #1 known cause of oral cancers. It was suggested that perhaps her chronic use of sugarless gums most of her life (which have artificial sweeteners) may have played a role.
With that information in mind, I have been on a quest formouthwashes and toothpastes as well which are free of artificial sweeteners and other artificial ingredients, as well as alcohol. These are some of the products I found:
Natural Dentist Mouthwash: Contains no alcohol, artificial sweeteners or additives. Has an orange flavor. It takes some getting used to, but we are using it at home
Tom's Natural Toothpaste. Contains Xylitol rather than Sorbitol. What I have read about Xylitol is that it seems to be of a natural, plant origin, has some beneficial qualities, and has not been given the same bad rap as Sorbitol. For now we are using it. The verdict is still out.