Which artificial sweetener is known to prevent caries?

The artificial sweetener known to prevent caries is xylitol. Xylitol is a sugar alcohol that is naturally found in many fruits and vegetables. Its unique properties make it beneficial for oral health. Unlike regular sugars that are metabolized by harmful bacteria in the mouth, leading to acid production and tooth decay, xylitol is not fermented by these bacteria. This means it reduces the amount of acid produced in the mouth, thereby lowering the risk of cavities.

Moreover, xylitol can contribute to the remineralization of enamel, helping to reverse early signs of tooth decay. It also promotes a healthier oral environment by increasing saliva flow, which aids in neutralizing acids and helps wash away food particles and bacteria.

In contrast, while other sweeteners like sucralose, stevia, and aspartame may serve as sugar substitutes, they do not have the same protective effects against dental caries as xylitol does. These alternatives might provide sweetness without calories but do not actively contribute to oral health in the way xylitol does.