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Hypodontia in Down’s syndrome patients | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 21, Issue 1, 2009, Pages 98-103 | ||
| Authors | ||
| Dheaa H. Abd Awn; Mustafa M. Al-Khatieeb; Nidhal H. Ghaib | ||
| Abstract | ||
| ABSTRACTBackground: The intention of this study was to quantify the occurrence of hypodontia in a group of individuals withDown syndrome.Materials and method: The sample consisted of 164 subjects with Down syndrome with an age ranged 14-18 years,the subjects were examined clinically, when radiographs were in need, orthopantomograph, occlusal, or periapicalwere often taken to confirm the diagnosis.Results: The results show a notably high prevalence of hypodontia in individuals with Down syndrome (45.2%) beinghigher in females (47.4%) than males (42.3%), the hypodontia in the maxilla was higher than in the mandible and onthe right side of females was higher than the left side, while males show on the left side was higher than the right sidethough this difference was not significant. The number of congenitally missing teeth also in females was higher than inmales; the most congenitally missing teeth were the lower second premolars, upper lateral incisors, lower secondpremolars and lower lateral incisors respectively. The distribution of peg–shaped lateral incisors was 15% and moreunilaterally than bilaterally.Conclusions: This study reveals a high prevalence of hypodontia (missing teeth and peg-shaped lateral incisors) inpatients with Down syndrome. No explanation other than genetics is immediately available to explain whyhypodontia should represent another phenotypic expression of this trisomyKeyword:Down's syndrome, Hypodontia, Peg-shaped lateral incisors. (J Bagh Coll Dentistry 2009; 21(1): 98-103) | ||
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