This study evaluated cephalometric differences between 113 Japanese (43 males and 70 females, aged 14.1 ± 5 years) and 106 European subjects (36 males and 70 females, aged 13.5 ± 7.3 years) using two compound angular measurements and their single components: the overbite depth indicator (ODI) for the assessment of vertical skeletal relationships and the antero-posterior dysplasia indicator (APDI) for an evaluation of sagittal dysgnathia. Both populations were assigned to groups representing Angle Classes I, II, and III, and an anterior open bite (AOB) group. Two sample t- and Wilcoxon signed-ranks tests were performed (P < 0.05). The ODI values showed no statistically significant differences between the Japanese and European samples. The Japanese sample showed a significantly smaller APDI but only in the Class II group. In the Japanese Class II and III subjects, the malocclusion patterns were more pronounced than those in the Caucasian sample (overbite, overjet, and APDI).

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Introduction:The craniofacial architecture is the result of a very complex interrelation. The nasal septum and specially vomer bone, because of its strategic spatial location between the cranial base and the mid-face, influence the growth of this area of the facial skeleton, thus playing a major role in the organization of the craniofacial architecture. The purpose was to analyze the influence of vomer bone on the morphology of the craniofacial architecture, evaluate its correlation with different structures, and compare the spatial position and dimensions between dentoskeletal frames.Method: 3D cephalometric measurements were analyzed and correlated in 302 digitally reconstructed skulls by 3D CBCT of a caucasic European adult population.Results: Changes in the inclination and the dimensions of vomer bone were strongly correlated with other craniofacial structures. There were significant variations in vomer bone between the different dentoskeletal frames.Conclusions: Vomer bone seems to play an important role in the interrelation of the craniofacial architecture.

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