Accuracy of virtual 3-dimensional cephalometric images constructed with 2-dimensional cephalograms using the biplanar radiography principle
- Author:
Jae-Seo LEE
1
;
Sang-Rok KIM
;
Hyeon-Shik HWANG
;
Kyungmin Clara LEE
Author Information
- Publication Type:Original Article
- From:Imaging Science in Dentistry 2021;51(4):407-412
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:The purpose of this study was to evaluate the accuracy of virtual 3-dimensional (3D) cephalograms constructed using the principle of biplanar radiography by comparing them with cone-beam computed tomography (CBCT) images.
Materials and Methods:Thirty orthodontic patients were enrolled in this study. Frontal and lateral cephalograms were obtained with the use of a head posture aligner and reconstructed into 3D cephalograms using biplanar radiography software. Thirty-four measurements representing the height, width, depth, and oblique distance were computed in 3 dimensions, and compared with the measurements from the 3D images obtained by CBCT, using the paired t-test and Bland-Altman analysis.
Results:Comparison of height, width, depth, and oblique measurements showed no statistically significant differences between the measurements obtained from 3D cephalograms and those from CBCT images (P>0.05).Bland-Altman plots also showed high agreement between the 3D cephalograms and CBCT images.
Conclusion:Accurate 3D cephalograms can be constructed using the principle of biplanar radiography if frontal and lateral cephalograms can be obtained with a head posture aligner. Three-dimensional cephalograms generated using biplanar radiography can replace CBCT images taken for diagnostic purposes.
