Interception and early treatment with rapid maxillary expansion for the impacted maxillary permanent central incisor in children: Two cases report with 5-years follow-up.

Introduction: The maxillary central incisor impaction represents a complex challenge in paediatric dentistry practice and may result in aesthetic and functional disharmony. The causes of this condition include physical barriers associated or not with a lack of space making eruption not possible, idiopathic ectopic positioning of the teeth or by trauma, non-coordination in rhizalysis and rhizogenesis between deciduous and successor or tooth shape abnormalities. The incidence of this involvement is quite rare, around 1% of the population.