PMID: 8972808Dec 1, 1996Paper

Radiocephalometric evaluation of a family with mandibulofacial dysostosis

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
S BhatiaC L Greene

Abstract

Persons from four generations of a family with mandibulofacial dysostosis (MFD), known as Treacher Collins (TC) Syndrome, were examined for the presence of clinical signs traditionally associated with this syndrome. In this family, 14 adults, who had been judged trait bearers by an earlier family study were included in this study. Maxillary and mandibular study models were taken of affected and unaffected family members. Panoramic cephalograms and lateral radiographs were taken. The lateral cephalograms were traced and digitized on a computer system and compared. The 117 cephalometric values of the trait bearers were compared with known standard values and nontrait bearing family members. In the trait bearing group, 81 of the 117 values and, in the nontrait bearing group, 72 of the 117 values were significantly different (p < 0.05) when comparing mean values to the accepted normal range. The interfamily comparison between trait-bearing and nontrait members revealed nine values to be significantly different. This indicates that cephalometric analysis of these patients, some of whom have minimal clinical expression of the gene, may have potential value for screening and further characterization of this condition. The results also...Continue Reading

References

Apr 1, 1975·Archives of Oral Biology·F G RobertsH Aduss
Oct 1, 1986·Plastic and Reconstructive Surgery·J L MarshM Gado
Nov 1, 1954·The British Journal of Radiology·W CAMPBELL
Jan 1, 1943·The British Journal of Ophthalmology·I L Johnstone

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