title: Epidemiological study of laterognathia, mandibular deviation and posterior crossbite in children aged 7-17 years from Plovdiv.
abstract: OBJECTIVE
  To conduct an epidemiological study and find the prevalence of some transverse anomalies of occlusion in children aged 7-17 years from the region of Plovdiv; to determine the most appropriate time for early orthodontic treatment based on the results of the study.
  
  
  METHODS
  The study included 883 children from Plovdiv (7-17 years old). The children were studied by means of extraoral examination, a clinical examination of dental arches and occlusion and by doing a clinical test to assess mandibular displacement.
  
  
  RESULTS
  The prevalences of mandibular deviation, laterognathia and posterior crossbite (unilateral or bilateral of single teeth or a group of teeth) were 30.4%, 1.02%, 10.53%, respectively.
  
  
  CONCLUSIONS
  Our results are consistent with the results reported by other authors which indicate that these malocclusions cannot self-regulate and for this reason they should be subject to strict prevention and early treatment.
authors.affiliation: Department of Orthodontics, Faculty of Dental Medicine, Medica University, Plovdiv, Bulgaria. dr.krusteva@abv.bg
authors.forename: Silvya A
authors.initials: SA
authors.lastname: Krasteva
mesh_terms: D000293:Adolescent; D002031:Bulgaria / Q000453:epidemiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000453:epidemiology*; D008334:Mandible / Q000002:abnormalities*; D015995:Prevalence