Birotundal diameter of the human sphenoid bone from age six years to early adulthood

Longitudinal data for a twenty‐year period are presented for a dimension of the human sphenoid bone as seen on postero‐anterior roentgenograms of 22 males and 18 females (healthy, American‐born Caucasoids). Birotundal diameter measured as the distance between the centers of the right and left foramen rotundum averaged near 32.0 mm for each sex at age 6 years. Individual increase in size to age 26 years ranged between 3.2 mm and 8.3 mm. There is no correlation between size at age 6 years and change between this age and early adulthood. For 54 males and 50 females at age 9 years, intercorrelations were obtained among six variables: birotundal diameter, head breadth, bizygomatic diameter, bigonial diameter, upper and loweer dental arch widths at the permanent first molars. The r 's were nonsignificant or low positive (with the exception of upper‐lower dental arch, r = 0.76). The results of this study are aligned with three previous studies of human cranial base width

Age changes · Age groups · Dental arch · Early adulthood · Foramen · Molar · Young adult · Anatomy · Demography · Dental Radiography and Imaging · Dentistry · Forensic Anthropology and Bioarchaeology Studies · Internal Medicine · Medicine · Orthodontics and Dentofacial Orthopedics · Physiology

• Size and form of the dental arches in children with good occlusion studied longitudinally from age 9 years to late adolescence

  Open Access•Virginia B Knott•American Journal of Physical…•1961

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