What are the disadvantages of a newborn baby taking a pacifier instead of breastmilk?

Newborns eating pacifiers do not eat breast milk is generally no obvious disadvantages, but relatively speaking, breast milk nutrition is sufficient.
Generally for newborns, it is recommended to exclusively breastfeeding, breast milk contains nutrients rich, and breast milk contains antibodies, can enhance the immunity of newborns, but also can improve the intelligence of newborns. However, if the newborn eats the pacifier does not eat breast milk, there is no other bad, but must pay attention to the newborn to choose the right formula.
In addition, the newborn only eat the pacifier, not breast milk can also take other ways, such as the milk will be squeezed out after the use of bottle feeding, can also achieve the effect of breastfeeding.