Cephalometric Norms in an Iranian Kurdish Population According to the Steiner Analysis

Abstract

Background: Cephalometric analyses norms and orthodontic software have been mainly developed for Caucasians. Thus, they might not be true for other ethnical groups. Objectives: This study sought to determine cephalometric norms of an Iranian Kurdish population according to Steiner analysis. Methods: In this cross-sectional study, 100 lateral cephalograms of adult orthodontic patients between 18 - 30 years including 40 males and 60 females with normal occlusion and symmetrical faces were evaluated. Lateral cephalograms were traced and analyzed based on Steiner’s cephalometric parameters. Data were analyzed using SPSS. Differences between Kurdish and Caucasian norms were analyzed using one-sample t-test. Independent t-test was used to compare males and females (P 0.05). Kurdish males and females were significantly different in terms of SND, Occl-SN, GoGn-SN and U1-NA angles, U1-NA distance and SL and SE values (P 0.05). Conclusions: Cephalometric norms for Kurdish adults are different from those of Caucasians. The norms obtained in our study can be used for orthodontic treatments and orthognathic surgeries in Kurdish population.