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Title

Evaluation of Cephalometric Standards for Zanjanian Population According to Downs’ Analysis

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Abstract

 Background: Following the morphological features of diff erent races and ethnic groups, knowledge of standard dentofacial patterns of each ethnic group is essential. Therefore, this study aimed to explain cephalometric standards for the Zanjanian population according to Downs’ analysis and compare them to Caucasian individuals. Methods: Seventy lateral cephalometries of Zanjanian adults (17-29 years old) who had been referred to a private Orthodontic offi ce in Zanjan, Iran with class I molar and canine relationship and normal overjet and overbite as well as minimum crowding/spacing/rotations were scanned and traced with the Novatech scanner and Dolphin Software version 10. Next, statistical analyses were performed in order to compare the Zanjanian population to Caucasians. Results: We found a signifi cant diff erence between males and females in terms of interincisal angle, incisor-occlusal angle, incisormandibular plane angle, upper incisor proclination, facial angle, and angle of convexity. Discussion: The analysis of six statistically signifi cant parameters indicates that the upper and lower incisors in women of Zanjan were proclined and protruded compared with those of Caucasian subjects. Due to the statistical analysis on facial angle and angle of convexity, women also show more maxillary prognathism and skeletal class II pattern. Generally, a comparison of Zanjanian population cephalometrics based on Downs’ analysis showed an increase in maxillary prognathism, maxillary and mandibular incisal protrusion and posterior rotation of the mandible. Conclusions: In conclusion, the Zanjanian population tends to have more dental and skeletal class II patterns than the Caucasians. In addition, gender comparison indicates lower and upper-incisors protrusion in women of Zanjan.

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    APA: Copy

    Khaleghi, Katayoon, Nourian, Azin, Ghorbankhan, Pooya, & FARZAN, ARASH. (2020). Evaluation of Cephalometric Standards for Zanjanian Population According to Downs’ Analysis. IRANIAN JOURNAL OF ORTHODONTICS, 15(2), 0-0. SID. https://sid.ir/paper/705754/en

    Vancouver: Copy

    Khaleghi Katayoon, Nourian Azin, Ghorbankhan Pooya, FARZAN ARASH. Evaluation of Cephalometric Standards for Zanjanian Population According to Downs’ Analysis. IRANIAN JOURNAL OF ORTHODONTICS[Internet]. 2020;15(2):0-0. Available from: https://sid.ir/paper/705754/en

    IEEE: Copy

    Katayoon Khaleghi, Azin Nourian, Pooya Ghorbankhan, and ARASH FARZAN, “Evaluation of Cephalometric Standards for Zanjanian Population According to Downs’ Analysis,” IRANIAN JOURNAL OF ORTHODONTICS, vol. 15, no. 2, pp. 0–0, 2020, [Online]. Available: https://sid.ir/paper/705754/en

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