Spry Xylitol Chewing Gum is "dentist recommended" (to reduce tooth decay) according to the label. It also recommends to use it "five times a day for better oral health".
IMPROVES TOOTH DENTAL CARE: Clinical studies have shown that the use of xylitol on a daily basis, may reduce the risk of tooth decay. Our spry gum is part of an essential dental defense system that may also help fight off cavities. Xylitol is a natural ingredient that inhibits bacteria's ability to stick to your teeth. When bacteria can't stick, they can't colonize. Ask your dentist and hygienist about the amazing benefits of xylitol.
FIVES TIMES A DAY FOR BETTER ORAL HEALTH
While there's ample evidence proving the oral benefits of xylitol, I looked at the ingredients of this particular product and I see it contains Malic Acid.
According to Science Direct, Malic Acid has a pH of 3.40 and 5.11. At a pH of 5.5 or less the enamel begins to erode.
How do we (they) know the benefits of xylitol are not outweighed by the relatively low pH level induced by Malic Acid that is present in each piece of gum?
To be clear, I'm not questioning the benefits of xylitol per se. I'm questioning the purported benefit of this specific product/mixture.