Journal Article

Comparison of Japanese and European overbite depth indicator and antero-posterior dysplasia indicator values

Josef Freudenthaler, Aleš Čelar, Mitsuyoshi Kubota, Susumu Akimoto, Sadao Sato and Barbara Schneider

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 34, issue 1, pages 114-118
Published in print February 2012 | ISSN: 0141-5387
Published online March 2011 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjq177
Comparison of Japanese and European overbite depth indicator and antero-posterior dysplasia indicator values

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This study evaluated cephalometric differences between 113 Japanese (43 males and 70 females, aged 14.1 ± 5 years) and 106 European subjects (36 males and 70 females, aged 13.5 ± 7.3 years) using two compound angular measurements and their single components: the overbite depth indicator (ODI) for the assessment of vertical skeletal relationships and the antero-posterior dysplasia indicator (APDI) for an evaluation of sagittal dysgnathia. Both populations were assigned to groups representing Angle Classes I, II, and III, and an anterior open bite (AOB) group. Two sample t- and Wilcoxon signed-ranks tests were performed (P < 0.05).

The ODI values showed no statistically significant differences between the Japanese and European samples. The Japanese sample showed a significantly smaller APDI but only in the Class II group. In the Japanese Class II and III subjects, the malocclusion patterns were more pronounced than those in the Caucasian sample (overbite, overjet, and APDI).

Journal Article.  2575 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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