Comparison between conventional and cone-beam computed tomography-generated cephalograms.
BACKGROUND
Cone-beam computed tomography (CBCT) is becoming established as an alternative and, in many aspects, superior radiographic technique to conventional radiography in orthodontics. However, cephalometric analysis is still an important tool in relation to treatment planning because 3-dimensional analyses are still not established. The aim of this study was to compare cephalometric measurements performed on conventional cephalograms with those on CBCT-synthesized images.


METHODS
Three observers digitized landmarks used for the Björk analysis on conventional lateral cephalograms and on 2 sets of CBCT-synthesized cephalograms (MIP and RayCast) from 34 patients.


RESULTS
The calculated measurements did not differ between the 3 image techniques. The RayCast technique proved to be more reproducible than the MIP.


CONCLUSIONS
CBCT-synthesized cephalograms can successfully replace conventional headfilms.
Cattaneo
Paolo M
PM
Department of Orthodontics, School of Dentistry, Faculty of Health Science, University of Aarhus, Aarhus, Denmark. pcattaneo@odont.au.dk
Bloch
Christian Borgkvist
CB
Calmar
Dorte
D
Hjortshøj
Mette
M
Melsen
Birte
B
D000465:Algorithms; D002508:Cephalometry / Q000379:methods*; D002680:Chin / Q000033:anatomy & histology; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003766:Dental Occlusion; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods; D007180:Incisor / Q000033:anatomy & histology; D008297:Male; D008334:Mandible / Q000033:anatomy & histology; D008437:Maxilla / Q000033:anatomy & histology; D009295:Nasal Bone / Q000033:anatomy & histology; D015588:Observer Variation; D012658:Sella Turcica / Q000033:anatomy & histology