Comparison of craniofacial and dentoalveolar morphologies of three Japanese monozygotic twin pairs with cleft lip and/or palate discordancy

The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
K MoriyamaT Kuroda

Abstract

In this study, we analyzed the craniofacial and dentoalveolar morphologies of three pairs of monozygotic twins discordant for cleft lip and/or palate (CL/P) in order to evaluate the effects of environmental factors on growth and development. Craniofacial and dentoalveolar morphologies revealed by analyses of cephalograms and dental casts were compared for each pair of twins discordant for CL/P. In case 1, the subjects were 10-year-old male twins, one of whom had a repaired unilateral cleft lip and alveolus and one of whom had an unrepaired unilateral cleft lip. In case 2, the subjects were 13-year-old female twins, one of whom had a repaired bilateral cleft lip and palate and one of whom had an unrepaired unilateral cleft lip. In case 3, the subjects were 9-year-old female twins, one of whom had a repaired unilateral cleft lip and palate and one of whom had no cleft. Cephalometric analysis disclosed distinguished intrapair differences in the maxillary and mandibular morphologies in cases 2 and 3. However, the tooth axes of the incisors in operated subjects were consistently influenced in all three cases. Dental cast analysis indicated that the shapes and sizes of the alveolar and dental arches in the operated subjects were affe...Continue Reading

References

Sep 1, 1978·Kōkūbyō Gakkai zasshi. The Journal of the Stomatological Society, Japan·H Yoshimasu
Jul 1, 1974·British Journal of Orthodontics·J D Crooks
Oct 1, 1996·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·T KurodaK Iwata

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Citations

Oct 30, 2001·The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association·T F SherwoodM I Siegel

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