Cephalometric study of the antero-posterior characteristics in children with primary dentition

Marcelo Flávio Rocha MENDLOVITZ, Vânia Célia Vieira de SIQUEIRA

Aim: the aim of this study was to evaluate the antero-posterior cephalometric characteristics in children until primary dentition. Methods: a group of 42 males, who had normal primary dentition, divided in two groups, one of four year-old boys (n=22) and the other of boys with five years old (n=20), were evaluated to determine cephalometric norms. Simultaneously, groups were evaluated to obtain information about the facial growth on those age. The measurements were taken on lateral cephalograms. Only those who had normal primary dentition and balanced profiles were selected. The cephalometric measurements were SNA, SNB, ANB, SN.GoGn, 1.1, FMA, FMIA and IMPA and linear measurements Nperp-A, Co-A, Co-Gn, maxillomandibular differential, S-N, ENA-ENP, overjet and ramus height. The Student´s t test, with significance level of 5%, was used to detect differences between the groups. Results and Conclusions: differences were detected only for angular measurements that involved the lower incisor (IMPA and 1.1). G2 individuals had their incisors more uprighted in their jaws than G1. All the linear measurements in G2 were higher than those in G1, but only Co-A, Co-Gn, and maxillomandibular differential presented a statistical significant difference.

Keywords: Cephalometry. Antero-posterior characteristics. Normal primary occlusion. Diagnosis. Male.

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