Comparison between 3D and 2D Cephalometric Analyses

This paper presented 3D cephalometric analysis on DICOM data from I-CAT CT cone-beam machine consisted of averages and standard deviations from 20 Thai males from 19 to 70 year (average 33.53 +/- 14.08 year) and 20 Thai females from 16 to 70 year (average 32.60 +/- 15.37 year). The angular measurements consisted of 49 lateral and 9 frontal measurements while linear measurements consisted of 29 lateral, 3 frontal, and 8 perpendicular measurements. Results in 3D were compared with the corresponding 2D results showing that most midline-to-midline linear measurements and some midline-to-midline angular measurements were not different, while other types of measurements were significantly different. The 3D results will be used in the clinical Ceph3D services as requested by those with interests on cephalometric analysis and anthropology with focus on Thai subjects while the 2D results will be used for comparison with cephalometric analyses from other orthodontists.