ABSTRACT
Aim: The aim of this study was to compare the reliability of frontal sinus as a skeletal maturity indicator in males and females. Setting and Sample Population: Lateral cephalograms of 75 males and 75 females, both in preand post-pubertal stages of development as determined by Middle phalanx of the third finger (MP3) radiographs. Materials and Methods: Lateral cephalograms were analyzed for frontal sinus maturity. Maximum height, maximum width and height to width ratio of the sinus were calculated. The mean height to width ratio of the sinus at respective MP3 stages were tabulated and subjected to statistical analysis to determine the correlation. Correlation at different MP3 stages between males and females was also determined. Results: Statistically significant differences were observed between the mean values of F and FG along with F and I stage in males, significant difference between the values of FG stage among males and females were also observed. Conclusion: Based on statistical and direct comparison of raw data, study concludes that frontal sinus is not reliable as a sole criterion for prediction of skeletal maturity.
ABSTRACT
OBJETIVO: diante da importância do sesamóide no emprego de métodos simplificados para a determinação da maturidade esquelética, julgamos necessário um estudo, em brasileiros adultos, para verificar a porcentagem de presença ou ausência deste ossículo. METODOLOGIA: a amostra constitui-se de 500 indivíduos brasileiros, com idade média de 22,5 (18-33) anos, de ambos os gêneros. A presença ou ausência do osso sesamóide foi verificada mediante a interpretação de radiografias periapicais, tomadas da articulação metacarpofalangena dos dois polegares de cada indivíduo da pesquisa. RESULTADOS E CONCLUSÃO: os resultados demonstraram que o osso sesamóide da articulação metacarpofalangeana esteve presente em todos os indivíduos (100 por cento) da amostra, concluindo, desta forma, que não houve agenesia deste osso nesta população avaliada.
AIM: the purpose of this study was to verify the percentage of agenesis of sesamoid bone in a Brazilian adult population. METHODS: the sample consisted of 329 females and 171 males, with mean age of 22.5 (range from 18 to 33 years). The presence or agenesis of sesamoid bone was evaluated through periapical radiographs taken from the metacarpophalangeal joint of the thumb (left and right) of each subject. RESULTS AND CONCLUSION: The results evidenced that the sesamoid bone was present in 100 percent of the sample, showing that was not found agenesis in these population.