On the other hand, there are many parents who think pacifiers are not the way to go for their babies. One theory suggests that offering a pacifier may cause nipple confusion and hurt progress that a baby has made nursing from his or her mother. Others suggest that prolonged pacifier use may lead to dental issues or problems with speech development down the road.
So are pacifiers good or bad? It really depends on your child and the choices you make for him or her. Did you use a pacifier for your baby?
American Academy of Pediatrics – http://aap.org/oralhealth/pact/ch8_sect1.cfm