In her book, Kiss Your Dentist Goodbye, Ellie Phillips DDS recommends wiping a baby's teeth with xylitol enriched baby wipes to reduce tooth decay:
For added protection and to ensure your baby's mouth is healthy before teeth begin to erupt, wipe his or her gums with a 100% xylitol wipe such as Spiffies..
..Baby wipes containing xylitol can also be useful (to promote growth of healthy bacteria)
While there's a plethora of evidence proving how xylitol in chewing gum or candy reduces tooth decay I'm specifically interested in knowing if there's direct evidence proving that xylitol which is merely applied topically has the same benefit of xylitol that is ingested.
Spiffies (the manufacturer of xylitol baby wipes) claims that:
An independent study done at the University of San Francisco Dental School shows that Spiffies do reduce cavities in baby teeth
Similarly, while xylitol is generally well tolerated, some people experience digestive side effects. Others maybe concerned of a potential link between excessive xylitol consumption and cancer. If xylitol can provide equal benefit by being swished around the mouth, it would be super useful tofor those individuals.
What scientific evidence exists to show that xylitol which is applied topically (or swished around the mouth without being ingested) is equally as effective as xylitol which is ingested through chewing gum or candy?