Objective: To evaluate the association of breastfeeding duration, pacifier use and nasal air flow with occlusal disorders among children.
Methods: This cross-sectional observational study included 138 children aged 4 and 5 years selected in all the daycare centers of the city of Campo Limpo Paulista, Brazil. Questionnaires were applied to mothers to identify total duration of exclusive breastfeeding and non-nutritive sucking.