Comparación Antropométrica entre Mandíbulas de las Poblaciones Uruguaya y Brasileña

Abstract

RESUMEN:Las mandíbulas humanas pertenecientes a la población uruguaya presentan ciertas diferencias anatómicas con las de la brasileña. Tal hecho parecería deberse a las particularidades raciales y étnicas de cada país. Este estudio examinó las características morfológicas de 100 mandíbulas de uruguayos y las cotejó con las correspondientes a idéntico número de piezas óseas de brasileños, por medio de trece mediciones estipuladas por Humphrey et al. (1999). Las variaciones significativas entre los valores promedios fueron determinadas mediante el test de Mann-Whitney (alfa=5%). Se constataron expresivas discrepancias entre algunas de las dimensiones analizadas, producto de las modificaciones de forma y estructura de las mandíbulas de ambos grupos. Las uruguayas exhibieron guarismos clara o ligeramente superiores en prácticamente todas las medidas realizadas, salvo en lo que respecta a la altura de la sínfisis (sutilmente mayores en sus homólogas brasileñas). Las divergencias más evidentes correspondieron a la altura de la incisura, altura de la rama y longitud mandibular, y las menos notorias al ancho mandibular, altura de la sínfisis y ancho bicoronoideo. Los factores que pueden haber inducido a las mismas resultan realmente profusos, incluyendo tanto a las adaptaciones funcionales del sistema estomatognático como a las biomecánicas, estimuladas por la diferente consistencia de la dieta, o la propia miscegenación.

Relationship between mandibular incisive canal and mental foramen using cone-beam computed tomography in a selected Brazilian Amazon population

“…Studies such as those Kajan, Salari [9] and Rosa et al [15], which estimated the length and the extension of the MIC in CBCT examinations have shown the longest length to be 20 mm and the shortest to be 3 mm. Relations were not found between the length of the MIC and sex or age, as well as in studies by Jacobs et al [8]; however, the average length of the canal in men was always longer than in women, as reported in studies of the, However, the average length of the canal in men was always longer than in women, as reported in studies of Obradovic et al [13] and Sassi et al [16], because anatomically, the alveolar ridge presents as being thicker in men. Our study was based on tomography examinations of the Brazilian population, which has a large miscegenation, especially in the Amazon, and the quality of the image may have been influenced by the difference in length of the MIC in relation to other populations [1,14,15].…”

“…Our study was based on tomography examinations of the Brazilian population, which has a large miscegenation, especially in the Amazon, and the quality of the image may have been influenced by the difference in length of the MIC in relation to other populations [1,14,15]. According to some studies, there are racial differences in the size and format of the mandible in the Brazilian population in relation to other populations, because the Brazilian population presents a longer mandible length and shorter symphysis than other populations [16].…”