title: Prevalence of malocclusion among adolescents in central anatolia.
abstract: OBJECTIVE
  The objective of this study was to describe the prevalence of malocclusion in a population of Central Anatolian adolescents in relation to gender.
  
  
  METHODS
  The sample comprised 2329 teenagers (1125 boys and 1204 girls), aged between 12 and 17 years (mean age: 14.6 yrs). Occlusal anteroposterior relationships were assessed using the Angle classification. Other variables examined were overjet, overbite, crowding, midline diastema, posterior crossbite, and scissors bite.
  
  
  RESULTS
  The results showed that about 10.1% of the subjects had normal occlusions, 34.9% of the subjects had Class I malocclusions, 40.0% had Class II Division 1 malocclusions, 4.7% had Class II Division 2 malocclusions and 10.3% had Class III malocclusions. Over 53.5% had normal overbites, and 18.3%, 14.4%, 5.6%, and 8.2% had increased, reduced, edge-to-edge or anterior open bite values, respectively. Overjet relationship was normal in 58.9%, increased in 25.1%, reversed in 10.4%, and edge-to-edge in 5.6%. A posterior crossbite registered in 9.5% and scissors bite in 0.3%. Anterior crowding was present in 65.2% of the sample and midline diastema in 7.0%. No clear gender differences were noted, except for normal overbite (most frequent in girls, P<.001) and increased overbite (most frequent in boys, P<.05).
  
  
  CONCLUSIONS
  Class II Division 1 malocclusion is the most prevalent occlusal pattern among the Central Anatolian adolescents and the high values (25.1% and 18.3%) of increased overjet and overbite were a reflection of the high prevalence of Class II malocclusion.
authors.affiliation: PhD, Assistant Professor, Department of Orthodontics, School of Dentistry, Kirikkale University, Kirikkale, Turkey.
authors.forename: Ibrahim Erhan
authors.initials: IE
authors.lastname: Gelgör
authors.forename: Ali Ihya
authors.initials: AI
authors.lastname: Karaman
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Ercan