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Closure of the spheno‐occipital synchondrosis

1963; Wiley; Volume: 147; Issue: 1 Linguagem: Inglês

10.1002/ar.1091470104

1097-0185

Thomas V. Powell, Allan Brodie,

Orthodontics and Dentofacial Orthopedics

Abstract Comparative anatomical and histologic methods have been responsible for the belief that the spheno‐occipital synchondrosis in the human is an active growth center until the adult stage is reached. According to standard texts the suture closes between the eighteenth and twenty‐fifth years. The present investigation was a re‐examination of this question by means of midsagittal laminagraphy. The material consisted of 205 males 8 to 21 years; and 193 females 6 to 18 years. The midsagittal lamina of the spheno‐occipital junction appears as a band of less radiopacity when the suture is open. Closure was found to occur first on the cranial border and to progress downward. Initial closure was found in a male of 10 years, 10 months; first complete closure at 13 years, 4 months. The last found completely open was at 15 years, 2 months. Complete obliteration was found at 8 years, 1 month in one female subject and the last completely open suture at 13 years, 9 months. In general, the closing age for the males was between 13–16 years, and the female between 11–14 years.