title: Comparative cephalometric study of Class II division 1 malocclusion between Lithuanian and Jordanian females.
abstract: The Class II malocclusions have a strong hereditary component as etiologic factor, both in families and in ethnic and racial groups. The purpose of this study to compare skeletal and dentoalveolar morphology in Class II division I malocclusion of Lithuanian and Jordanian females. The sample consisted of 60 standardized lateral cephalograms (30 Jordanian - 30 Lithuanian). The mean age of the subjects was 14.8+/-1.11 years. Criteria for cephalometric comparison were 5 linear and 10 angular cephalometric variables. Repeating landmark identification tested reproducibility of the measurements. Unpaired t-test was performed to assess the difference of malocclusion between both groups. Results considered to be statistically significant when p<or=0.05. Results showed that Lithuanian females had reduced vertical skeletal relationship in their Class II division 1 malocclusion, while Jordanian females characterized by increased vertical relationship. Dentoalveolar measurements showed a significant proclination of the mandibular incisors in Jordanian females compared with Lithuanians.
authors.affiliation: Clinic of Orthodontics, Kaunas University of Medicine, Lukdos-Daumanto 6, Kaunas, Lithuania.
authors.forename: Baher Adli
authors.initials: BA
authors.lastname: Bader
authors.forename: Arunas
authors.initials: A
authors.lastname: Vasiliauskas
authors.forename: Ahmad Salim
authors.initials: AS
authors.lastname: Qadri
mesh_terms: D000293:Adolescent; D002508:Cephalometry / Q000706:statistics & numerical data; D002680:Chin / Q000473:pathology; D005006:Ethnicity; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D007597:Jordan; D008097:Lithuania; D008312:Malocclusion, Angle Class II / Q000208:ethnology / Q000473:pathology*; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000473:pathology; D009295:Nasal Bone / Q000473:pathology; D019291:Skull Base / Q000473:pathology; D014716:Vertical Dimension