Study of the cephalometric features of Brazilian long face adolescents

Omar Gabriel da SILVA FILHO, Gleisieli C. Petelinkar Baessa CARDOSO, Maurício CARDOSO, Leopoldino CAPELOZZA FILHO

Objective: To set skeletal and dental cephalometric values for Brazilian long face adolescents. Methods: The sample comprised lateral cephalograms of 30 long face patients, 17 females and 13 males, and 30 Pattern I adolescent patients, 15 males and 15 females, with permanent dentition. The features that characterize the long face pattern were defined clinically by facial analysis. The following cephalometric measurements were assessed: 1) Sagittal behavior of the apical bases (SNA, SNB, ANB, NAP, Co-A, CoGn), 2) Vertical behavior of the apical bases (SN.PP, SN.MP, gonial angle, TAFH, LAFH, MAFH, PFH, TAFHperp, LAFHperp), 3) Dentoalveolar behavior (1-PP, 6-PP, 1-MP, 6-MP, 1.PP, IMPA), and 4) Facial height ratios (LAFHPerp/TAFHPerp, LAFH/TAFH, MAFH/LAFH). Results and Conclusions: The vertical error of the long face pattern is concentrated in the lower third. The maxilla exhibits a greater dentoalveolar height and the mandible, given its more vertical morphology, displays greater clockwise rotation. These morphological and spatial features entail sagittal and vertical skeletal changes as well as vertical dentoalveolar changes. The angles of facial convexity are increased in the sagittal direction. Vertically, the total and lower anterior facial heights are increased. The dentoalveolar component is longer.

Keywords: Face. Adolescent. Cranial circumference.

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