Craniofacial Dysmorphology and Hypodontia in 22q11.2 Deletion Syndrome

Year 2013, Volume: 1 Issue: 1, 29 - 34, 29.07.2013

İdil Burt

Abstract

The purpose of this study was to determine the craniofacial
morphology, as assessed on lateral cephalometric radiographs and
to investigate the presence and/or the prevalence of hypodontia and
distribution of hypodontia in the sample of patients with deletion
22q11 syndrome attending the Eastman Institute, in Stockholm,
Sweden. This study indicates an increased cranial base angle (Ba/
SN) in patients with 22q11.2 deletion syndrome. A slight correlation
was found between the increased cranial base and increased SN/
NL angle indicating a posterior rotation of the maxilla rather than
the mandible. When each angle, apart from the cranial angle, was
analyzed individually, they appeared to be relatively normal. The
open bite features of these patients can be attributed to the hypotonic
activity of the oromuscular forces rather than retrognathic features.
There were no congenitally missing teeth in neither of the groups in
this study.

Keywords

22q11 deletion syndrome;CATCH 22;velocardiofacial syndrome;DiGeorge anomaly;

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