This is Spry, a chewing gum that contains Xylitol. It's just one of several brands that are out on the market today.
Xylitol is a natural sweetener that is actually "tooth-friendly". Xylitol was developed in Finland as a substitute for sugar during World War II. It is as sweet as sugar but is 40% lower in calories.
When xylitol gum is chewed or mints are consumed throughout the day it actually reduces decay by 80%! They have also discovered it may prevent middle ear infections and sinus infections, as well.
It's best to chew the xylitol gum right after meals and snacks, and right before bedtime. It neutralizes the acids in the saliva and helps to prevent placque from adhering to the teeth, therefore it prevents cavities, and it stimulates remineralization of the enamel.
Found in strawberries, raspberries, and plums, xylitol is actually good for teeth and safe for diabetics.