Sugar-free gums primarily use which of the following as sweetening agents?

Sugar-free gums commonly use xylitol and sorbitol as sweetening agents primarily because they provide a sweet taste without contributing to tooth decay. Xylitol is known for its dental benefits, including the ability to inhibit the growth of decay-causing bacteria in the mouth, thus reducing the risk of cavities. Sorbitol is another sugar alcohol that is less effective than sucrose but still provides sweetness while maintaining a low-calorie profile.

The formulation of sugar-free gums aims not only to sweeten but also to promote oral health, making xylitol particularly attractive for this application. The combination of these sweeteners in sugar-free gum balances sweetness and dental safety, making them ideal for consumers concerned about oral health.

In contrast, options that include sucrose or dextrose would be incorrect because these are sugars that can contribute to tooth decay, counteracting the purpose of sugar-free products. Aspartame and sucralose, while used as sweeteners in some sugar-free products, are not as commonly used in gum formulations due to stability issues during chewing.