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《Journal of Clinical Stomatology》 2014-01
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Mandibular growth rotation in untreated Class Ⅲ malocclusion

XIE Kui;HUI Wen-ting;PEI Jin-ying;WANG Li-ying;LIU Jia;JIN Zuo-lin;Department of Orthodontics,School of Stomatology,Fourth Military Medical University;Department of Stomatology,Xidian Group Hospital;  
Objective:A cross-sectional study was designed to investigate the characteristics of mandibular rotation in untreated patients with Class Ⅲ malocclusion. Method:The sample consists of 329 subjects(144 males,185 females) with Class Ⅲ malocclusion, who were divided into six consecutive developmental periods(from CS1 to CS6 according to cervical vertebral maturation method(CVM). Their cephalograms were measured by Winceph8.0 software,which include Gonion Angle(ArGo'Me),Occlusal plane Angle(Occlusal pl. To SN),Mandibular plane Angle(Go Gn to SN) and ratio(S-Go/N-Me) value; The data were analyzed by SPSS16.0. Result:For male,SN-OP displayed a ascending firstly and descending lately trend,the peak in CS3,and exhibited statistically significant increases between CS3 and CS6. In the transitions from CS4 to CS6,Ar-Go'Me decreased,and S-Go/N-Me increased gradually;in addition,both the measures showed statistical significance between CS4 and CS6((P value 0.041and 0.009,respectively). In female,SN-OP,SN- GoGn and ArGo'Me showed statistically significant decreases from CS4 to CS5(P ﹤ 0.05),meanwhile,S-Go/N-Me exhibited statistically stgnificantce accordingly(P = 0.006). Conclusion:The results suggested that Mandibular growth showed a trend of upward and forward rotation generally, and their rotation was the most apparent from CS4 to CS6. This study indicated that mandibular growth rotation after the growth spurt should be considered,when orthodontists take out therapy plans for patients with Class Ⅲ malocclusion.
【Fund】: 陕西省科技攻关计划项目(2012K16-10-05)
【CateGory Index】: R783
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 DENG Rong-xia,DING Yin,SUN Bai-yang,GUO Tao,YU Min(Department of Orthodontics,the Stomatological Hospital of The Fourth Military Medical University,Xi'an,710032,China);Morphological Influence of the Mandibular Third Molar Extraction to the Angulusmandibulae Using Cone-Beam Computed Tomography[J];Progress in Modern Biomedicine;2012-11
2 ZHAO Zhu,LI Dong,SONG Jingming,JIAO Hongyan,JIN Zuolin.1.710032 Xi'an,Department of orthodontics,School of stomatology,The Fourth Military Medical University,China;The characteristics of mandibular growth in untreated class Ⅲ maloccusion subjects[J];Journal of Practical Stomatology;2011-02
【Co-citations】
Chinese Journal Full-text Database 5 Hits
1 SONG Jingming,ZHAO Zhu,SONG Yang,HUANG Chuang,HAO Wenjun,JIN Zuolin.710032 Xi'an,Department of Orthodontics,School of Stomatology,The Fourth Military Medical University,China;Growth charactristics of mandible and maxilla in patients with ClassⅡ malocclusion[J];Journal of Practical Stomatology;2012-02
2 YUAN Xiangling,PENG Jing.100039 Beijing,Department of Stomatology,The General Hospital of Armed Police forces,China;Longitudinal genetic effects on mandibular morphology in cephalograms of female twins aged six to twelve years old[J];Journal of Practical Stomatology;2013-04
3 CHEN Xiang-sa;XIAO Dan-na;GAO Hui;Graduate School,Tianjin Medical University;Department of Orthodontics,Tianjin Stomatological Hosptial;;Correlation of occlusal plane and sagittal position of the mandible in skeletal Class Ⅱ hyperdivergent mal- occlusion[J];Journal of Tianjin Medical University;2014-01
4 LIN Xin-ping,ZHOU Li-mei,WU Meng-jie.Department of Orthodontics,the Affiliated Stomatological Hospital,Zhejiang University,Hangzhou 310006,China;Longitudinal changes of craniofacial growth and their clinical considerations in orthodontic treatment[J];Chinese Journal of Practical Stomatology;2010-02
5 Pan Yu;Hou Lu;Xu Shi-qian;Department of Orthodontics,the 2nd Affiliated Hospital of Harbin Medical University;School of Materials Science and Engineering,Harbin Institute of Technology;;Fatigue rupture study of HL-3 Buccal Multiloops for simulation of oral movements[J];Chinese Journal of Tissue Engineering Research;2013-38
【Secondary Citations】
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1 Zhang Xingzhong, Zhou Yanheng, Lin Jiuxiang. Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China;Facial growth in vertical dimension of Chinese adolescents from 13 to 15 years old with normal occlusion in Beijing[J];Journal of Practical Stomatology;2006-04
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