Sugar-free gum could still be damaging to teeth because of the highly acidic ingredients used to give it flavoring, according to a new report published in the British Dental Journal.
While sugar-free gum that contains ingredients like xylitol and sorbitol can help prevent cavities, it can also increase acidity inside the mouth, eroding tooth enamel.
"The term sugar-free may generate false security because many people may automatically believe that sugar-free products are safe on the teeth," explained Boston University researcher Dr. Sok-Ja Janket.
While chewing moderate amounts of gum should not pose too much of an issue, the problem is especially pronounced in fruit-flavored gum and candies, which use acidic chemicals to create the sugar-free flavoring.
The researchers say that more studies are needed in the area in order to determine exactly how severe the problem may be. Their findings underscore the importance of brushing with a fluoride-based toothpaste and regular visits to the dentist.