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《Journal of Clinical and Pathological Research》 2015-01
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Landmark accuracy on CBCT-generated cephalograms and conventional lateral cephalograms

WANG Hongwei;YAN Ming;LI Chuang;QI Suqing;LI Lei;Department of Orthodontics,Hebei Eye Hospital;Department of Stomatology,the Second Hospital of Shijiazhuang;  
Objective:To investigate systematic differences in landmark position between conventional lateral cephalograms and cone-beam computed tomography(CBCT)-generated cephalograms.Methods:Subjects were 53 patients(24 males and 29 females).All patients were imaged using CBCT and conventional lateral cephalograms.Cephalograms were verified and 22 landmarks were identificated 3 times by one operator.Hotelling T2 was used to analyze variability differences.Results:There were no systematic differences between modalities in the position of most landmarks.Four landmarks,porion(t=0.50,P=0.006),anterior nasal spine(t=0.49,P=0.008),gonion(t=0.39,P=0.039),and basion(t=0.64,P=0.006),showed statistically significant differences.Conclusion:CBCT-generated cephalograms provide more precise identification and can successfully replace conventional cephalograms.
【Fund】: 邢台市科技支撑计划项目(2014ZC073)~~
【CateGory Index】: R816.1;R783.5
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