The pattern of facial growth before and during puberty, as shown by French-Canadian girls

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Abstract
An analysis of longitudinal sequences of lateral head X-rays of 50 Montreal girls, taken annually between the ages of 6-15 was reported. Mean size changes for distances within the cranial base, the maxilla and the mandible, and those outlining the facial polygon, are displayed on a common proportional scale based on mean sizes at 15 yr old. Mean growth velocities are displayed on a chronological age scale and on one relative to the individual age of peak growth velocity in stature. A distinct facial pattern of growth is established. The proportion of final size achieved during childhood, is below the cranial pattern, but above the general skeletal one. The facial pattern shows a pubertal peak in growth, but quantitatively less important than that for stature. The timing of the 2 peaks is closely aligned, although the evidence favors a slightly later development for the face. The mandibular ramus provided the sole exception to this common facial pattern, though some questions on maxillary growth remains.