It is reported in studies of patients with Mandibulofacial Dysostosis (Treacher Collins Syndrome, MFD) that the lower border of the mandible exhibits a consistent form. The mandible of a 15-week-old fetus was described demonstrating the distinctive typical broad concave curvature of the lower border of the mandible. It appears that the basic mandibular form in MFD is established in utero, is maintained throughout postnatal growth and development, and is unique in shape.
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References
1.
Pruzansky, S. : Not All Dwarfed Mandibles are Alike. In: Malformation Syndromes in Birth Defects: Original Article Series, Vol. 2, Bergsma, D., Ed., Proceedings of the First Conference on Clinical Delineation of Birth Defects, Part 2, New York: National Foundation, 1969, pp. 120-129.
2.
Roberts, F.G. ; Pruzansky, S.; and Aduss, H.: An X-radio Cephalometric Study of Mandibulofacial Dysostosis in Man, Arch Oral Biol20:265-282, 1969.
