Babies are born with the natural urge to suck. When the child wants to sleep, needs comforting or wants to relax, he or she will be happy about having a pacifier. You can choose refrain pacifier usage when the baby is playing as the baby is already distracted, and most likely, relaxed by interaction of toys. Many pediatric dentists and other medical experts do recommend the use of pacifiers because it is much easier to wean a baby off of pacifiers than it is to wean off of thumb sucking.