Using a Pacifier for Sleep
Consider giving a pacifier at nap time and bedtime. It has been shown that the risk of SIDS is lower when a pacifier is used during sleep. Using a pacifier does not affect breastfeeding (if breastfeeding is already well established), and does not cause later dental problems.
Use the pacifier when placing the baby down for sleep, and do not insert the pacifier again once he/she falls asleep. If the baby refuses the pacifier, he/she should not be forced to take it. Pacifiers should not be coated in any sweet mixture. Pacifiers should be cleaned often and replaced regularly. For breastfed infants, do not start using the pacifier until 1 month of age to make sure that breastfeeding is well established.
Reference: American Academy of Pediatrics (AAP), the National Institute of Child Health and Human Development (NICHD) at the National Institutes of Health (NIH), and the Consumer Product Safety Commission (CPSC).