Variability of the craniofacial skeleton. II. Comparison between two age groups.
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Biomedical subjects
Publications and source records attributed to K Koski.
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The variability of the craniofacial skeleton of the juvenile Macaca mulatta was studied from lateral radiographic cephalograms of twenty-three animals, using a previously described method based on fourteen lines depicting certain anatomic features. The findings, when compared to corresponding human data, revealed that a number of angular relationships are similar in this monkey and in human childrena and adults. The same is true regarding the variability of individual lines. These similarities suggest that biologic similarities exist in the cranio-facial skeletal architecture in these species. Specifically, the findings in the Macaca mulatta were in agreement with previous findings in human children and adults as regards the parallelism between the anterior parts of the neurovascular canals of the upper and lower jaws and the apparently adaptive role of the ramus and the condyle.
Cartilaginous influence in the face begins with the formation of the early chondrocranium and continues into the postnatal life with the persisting derivatives of the chondrocranium, the cranial base synchondroses and the nasal septum, and with the secondary cartilage of the mandibular condyle. A review of available data indicates that the cartilages should be considered as integral parts of a holistic system, and that their role within this system most likely diminishes with age.
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