[Esthetic impact of the Le Fort I type osteotomy]

The study of a population treated according to orthodontico-surgical process with only a LE FORT I osteotomy allowed us to determinate the moderate influence on each element of curtain profile (nose, lips and chin). The comparison between relative moving of maxillary and the one of each cutaneous structures enable us to define the sagittal and vertical displacement's ratios of curtain profile.