Skeletal maturation assessment of Brazilians using cervical vertebrae analysis / Avaliação da maturação esqueletica na população brasileira por meio da analise das vertebras cervicais

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The aim of this study was to evaluate the applicability of the formula developed for Japanese people by Mito et al. (2002) in Brazilians, as well as to establish two new formulas to objectively evaluate skeletal maturation in female and male Brazilian subjects using cephalometric radiographs. The study sample was taken from patient files of the Oral Radiological Clinic, Piracicaba Dental School, Brazil. Lateral cephalometric and hand-wrist radiographs of 128 girls and 110 boys (aged 7.0 to 15.9 years) were selected. Cervical vertebral bone age was evaluated using Mito´s method. Bone age was evaluated by the Tanner &Whitehouse method (TW3) and was used as gold standard to determine the reliability of the Japanese method. After that, cervical vertebral bodies of C3 and C4 were traced and a stepwise multiple regression analysis was created in order to determine formulas to obtain cervical vertebral bone age in Brazilian girls and boys. A different sample consisted of lateral cephalometric and hand-wrist radiographs of 55 girls and 54 boys (aged 7.0 to 15.9 years) was used to verify the reliability of cervical vertebral bone age in comparison with bone age by the TW3 method. Against the analysis of the Japanese method, it was possible to observe that there was a statistically significant difference between cervical vertebral bone age and chronological age and between bone age and chronological age in girls. Differently, the analysis for boys demonstrated that there was a statistically significant difference between cervical vertebral bone age and bone age and between cervical vertebral bone age and chronological age. The establishment of formulas for objectively evaluating skeletal maturation in Brazilians showed no statistically significant difference between cervical vertebral bone age, bone age, and chronological age. We concluded that the method developed by Mito et al. for objectively evaluating skeletal maturation on cephalometric radiographs can be applied to Brazilian women only and the formulas developed in this study are reliable and can be applied to both female and male Brazilian subjects

ASSUNTO(S)

growth radiografia puberdade radiography orthodontics crescimento puberty ortodontia

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