Feb 7, 2008

Cervical column morphology and craniofacial profiles in monozygotic twins

Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies
Liselotte SonnesenI Kjaer

Abstract

Previous studies have described the relationships between cervical column morphology and craniofacial morphology. The aims of the present study were to describe cervical column morphology in 38 pairs of adult monozygotic (MZ) twins, and compare craniofacial morphology in twins with fusions with craniofacial morphology in twins without fusion. Visual assessment of cervical column morphology and cephalometric measurements of craniofacial morphology were performed on profile radiographs. In the cervical column, fusion between corpora of the second and third vertebrae was registered as fusion. In the twin group, 8 twin pairs had fusion of the cervical column in both individuals within the pair (sub-group A), 25 pairs had no fusions (subgroup B), and in 5 pairs, cervical column morphology was different within the pair (subgroup C), as one twin had fusion and the other did not. Comparison of craniofacial profiles showed a tendency to increased jaw retrognathia, larger cranial base angle, and larger mandibular inclination in subgroup A than in subgroup B. The same tendency was observed within subgroup C between the individual twins with fusion compared with those without fusion. These results confirm that cervical fusions and craniofa...Continue Reading

  • References29
  • Citations4

References

  • References29
  • Citations4

Citations

Mentioned in this Paper

Cervical Vertebrae
Mandible
Science of Morphology
Plain X-ray
Face
Monozygotic Twins
Calvaria
Subgroup C
Teens
Quantitative Trait, Heritable

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