title: Prevalence of dental anomalies in the permanent dentition of children with Down syndrome.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the prevalence of various congenital dental anomalies in the permanent dentition of Turkish children with Down syndrome.
  
  
  METHODS
  The sample consisted of 216 diagnostic records of children diagnosed with Down syndrome. All subjects had a clinical examination as well as radiographs and photographs taken. Anomalies in the permanent dentition were documented.
  
  
  RESULTS
  There was a high incidence of dental anomalies, the most frequent being taurodontism (81 percent), rotation (28 percent), hypodontia (26 percent), tooth impaction (18 percent), ectopic eruption (14 percent), microdontia (13 percent), and hyperdontia (9 percent). Differences in prevalence of congenitally missing teeth, structural anomalies, and positional anomalies reached a statistically significant level regarding gender (P<.05).
  
  
  CONCLUSIONS
  Turkish children with Down syndrome presented a high incidence of anomalies affecting the permanent dentition, and, in most cases, individuals presented with more than one anomaly.
authors.affiliation: Department of Oral and Maxillofacial Radiology, School of Dentistry, Erciyes University, Kayseri, Turkey. aercansekerci@hotmail.com.
authors.forename: Ahmet Ercan
authors.initials: AE
authors.lastname: Sekerci
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Kenan
authors.initials: K
authors.lastname: Cantekin
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Aydinbelge
authors.affiliation: Department of Orthodontics, School of Dentistry, Selcuk University, Konya, Turkey.
authors.forename: Faruk İzzet
authors.initials: Fİ
authors.lastname: Ucar
mesh_terms: D000293:Adolescent; D002648:Child; D019229:Dentition, Permanent; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D015995:Prevalence; D012189:Retrospective Studies; D014071:Tooth Abnormalities / Q000453:epidemiology*; D014421:Turkey / Q000453:epidemiology