Tangentially related, apparently xylitol gum can reduce cavity risk by killing off bacteria (which cannot digest but cannot differentiate xylitol from regular sugar) in the mouth.

Alternative form of delivery required for Singapore.

Not worth the time of day until it can be demonstrated that there is a net health benefit. Precautionary Principle FTW.

I wonder if chewing mastic would be as effective?

Sounds like an ad. "Eat this gum, it is so healthy."