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Dental Research Journal، جلد ۱۱، شماره ۱، صفحات ۰-۰
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عنوان انگلیسی Comparing the range of μ and β angles in 6-17-year-old children of Isfahan with normal occlusion
چکیده انگلیسی مقاله Background: Linear and angular measurements such as A point, nasion, B point (ANB) angle and Wits appraisal index are not accurate enough to evaluate sagittal relationship of the jaws. The aim of this study was to evaluate and compare the range of ì and â angles in 6-17-year-old children of Isfahan, having normal occlusion. Materials and Methods: This was an analytical descriptive study. For this study, 235 cephalometric radiographs of patients who didn’t receive orthodontics treatments and based on 13 indexes had normal occlusion, were selected. After tracing of cephalograms, ANB angle, Wits appraisal index, ì angle (resulted from the intersection of AB line and perpendicular line from point A to mandibular plane) and â angle (resulted from the intersection of AB line and perpendicular line from point A on CB line) were measured. Data was analyzed by t -test, ANOVA and Pierson-Spearman correlation coeffi cient ( P < 0.05). Results: Mean value of ì and â angles were 17.34 ± 3.47 and 31.7 ± 3.31 and ranged from 8-27 to 21.5-39 respectively. According to t -test, there was a signifi cant difference between two sex groups for ì angle ( P = 0.02); however, it was not signifi cant for â angle. According to Spearman correlation coeffi cient, there was no signifi cant difference between age and ì angle; however, â angle was directly and signifi cantly related to age ( r = 0.435). There was signifi cant and reverse relationship between ì and â angles with ANB angle and Wits appraisal index. Conclusion: ì and â angles are reliable and can be used to evaluate the anterior-posterior relationship of the jaws. Key Words: A point, nasion, B point angle, normal occlusion, wits appraisal index, â angle, ì angle
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نویسندگان مقاله سعید صادقیان | saeed sadeghian


مریم حاجی احمدی | maryam hajiahmadi


لادن خرمی | ladan khorrami


هادی مشکل گشا | hadi moshkelgosha


نشانی اینترنتی http://drj.mui.ac.ir/index.php/drj/article/view/1539
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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