%0 Journal Article
%T Searching of distinct types of Class II, division 1 malocclusion in Greek children aged between 10-12 years.
%A Olga-Elpis G. Kolokitha
%A Nikolaos Topouzelis
%A Sossani Sidiropoulou-Chatzigianni
%A Smaragda Kavvadia-Tsatala
%J Hellenic Orthodontic Review
%D 2011
%I 
%X AIM: The aim of this study is the search of the combinations of cephalometric characteristics and distinct types composing the clinical identity of Class II, division 1 malocclusion in Greek children aged between 10-12 years and the investigation of the possible differences in the combinations of the above mentioned characteristics between the two sexes.DESIGN: Descriptive analysisMATERIAL AND METHODS: 136 lateral cephalometric radiographs of children aged between 10-12 years taken in the same x-ray laboratory and met the criteria of the study were selected from the records of patients treated in four private orthodontic offices. Cluster analysis was used in order to recognize homogeneous groups of ¦·lass II, division 1 cases.MAIN OUTCOME MEASURES: The variables used as separation basis for group comparisons were overjet, cranial deflection, convexity and the distance of mandibular incisor from the aesthetic plane. Descriptive statistics of these variables were calculated in order to describe the two groups formed.RESULTS: Two groups were identified with Cluster analysis. Group 1 or dentoalveolar type of Class II, division 1 malocclusion constitutes 47.1% of the sample and is characterized by the labial inclination of the upper incisors. Group 2 or skeletal type of Class II, division 1 malocclusion constitutes 52.9% of the sample and is characterized by the posterior rotation of the mandible. It was found that the groups are independent of sex.
%K Class II division 1 malocclusion
%K cephalometric analysis
%U http://www.grortho.gr/hor/2011v14i1/03%20kolokitha.pdf