Parents need to be careful with their children’s pacifiers. If not, dental decay could be the result.
Numerous studies show that dental decay can be transmitted to a child when an adult sucks on the pacifier to clean it.
Don’t Suck or Lick on Your Child’s Pacifier!
A recent study in the journal Pediatrics goes into detail about this issue. There are few, if any, immunizing effects from adult saliva. Therefore, licking or sucking something to clean it off does nothing to get rid of germs.