To obtain measurement of SNA, SNB and ANB angles described by Steiner of initial cephalometric X-rays S0 sella, N = nasion, A = point Aß maxillary, and B= point B mandibular and verify the file; Rank taken was: Skeletal class I 2 ± 2.
Se seleccionan los expedientes de personas atendidas en el Departamento de Ortodoncia de la DEPeI; en el periodo 1998-2004.