Influence of Unrestricted Introduction of Pacifiers on Breastfeeding Duration

Inclusion Criteria * Understands the benefits and risk for offer liberally the pacifier during their stay at the maternity. * Expressed an intention to breast feed exclusively their infant for at least 3 -months * Possibility of contact by telephone * Has the decision to offer a pacifier to the newborn infant , but not definite opinion about when are going to offer a pacifier * Primiparous single birth * Mother´s age 18 years or more Exclusion Criteria: * Maternal risk factors for lactation * Lack of noticeable breast enlargement during pregnancy * Flat or inverted nipples * Variation in breast appearance (marked asymmetry, hypoplastic, tubular) * Any previous breast surgery, including plastics procedure * Psychosocial problems (eg, depression, poor or negative support of breastfeeding * Mother with a chronic condition that could influence development , including feeding ability * Mother with eating or mental disorder. * Mothers who smoke during pregnancy