[ThePythonicCow]

no more sugar free Trident for the dog.

No ... though I trust you spoke in jest (that, or you have a very odd dog ;) ... Trident doesn't have zylitol.

From Walgreens.com, it uses Sorbitol, Maltitol, and Mannitol for sweetening:

Ingredients
Sorbitol , Gum Base , Maltitol , Mannitol , Artificial Flavoring , Natural Flavoring , Acacia Less Than 2% , Acesulfame Potassium Less Than 2% , Aspartame Less Than 2% , BHT Less Than 2% - to Maintain Freshness , Calcium Casein Peptone-Calcium Phosphate Less Than 2% - Lactose-free Milk Derivative , Candelilla Wax Less Than 2% , Glycerin Less Than 2% , Sodium Stearate Less Than 2% , Titanium Dioxide Less Than 2% - Color

[ThePythonicCow]

I was wrong. Some flavors of Trident do have some Xylitol, such as:

Ingredients
Sorbitol , Gum Base , Glycerin , Mannitol , Natural Flavors , Artificial Flavors , Xylitol , Citric Acid , Malic Acid , Acetylated Monoglycerides , Soy Lecithin , Aspartame , Acesulfame Potassium , BHT to Maintain Freshness , Yellow 6 Lake , Yellow 5 Lake , Yellow 5 , Red 40 , Yellow 6 , Blue 1