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《Journal of Clinical Stomatology》 2014-10
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Observations of the maxillary second molar mesial root resorption after moving

CHENG Tao;LIU Yun;ZHANG Man;The First Department of Orthodontics,College of Stomatology,Wuhan University;Department of Stomatology,the Fifth Hospital in Wuhan;  
Objective:through observation of maxillary first molar root out cases,evaluation of the second molar in the influence on root absorption. Method:selection of 17 cases of maxillary first molar root out cases,through the cephalometric shadow trace measurement distance,in the shadow software measurement and use the cephalometric before and after the rectification of the maxillary second molar crown root ratio to determine root absorption,17 cases of samples before and after treatment root crown root as t test,and the maxillary second molar mesial movement distance and crown root to correlation analysis. Result:the maxillary second molar crown root ratio before and after treatment in the root of the comparison have statistical significance(P 0.01) in mobile distance is negatively correlated with root. Conclusion:maxillary second molar mesial movement can cause root absorption,absorption,however,are acceptable. Tooth movement distance is an important factor affecting root absorption.
【CateGory Index】: R783.5
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