<qa>  What is the primary reason for successful transition to full oral feeding in preterm infants?Successful transition to full oral feeding in preterm infants is important for safe discharge from hospital and for facilitating the mother-infant bond. Preterm infants were evaluated weekly for sucking and swallowing performance i.e., feeding performance from the time they began oral feeding frequency 1-2 oral feedingsday until they reached independent oral feeding frequency 8 oral feedingsday at postmenstrual 38-40 weeks. For the term infants, we evaluated a single oral feeding during the first week of life. 