COMPARISON BETWEEN LINEAR CEPHALOMETRIC MEASUREMENTS TRACING ON MANUAL AND DIGITIZED LATERAL CEPHALOGRAM
Digital Cephalometry needs to be as accurate as conventional cephalometry in order to be taken as a standard of care in contemporary orthodontics. Objective of this study was to compare the accuracy of linear cephalometric measurements on digitized cephalograms with manual tracing as the gold standard.
Cephalometric analysis of linear measurements was performed on 110 cephalometric radiographs manually & digitally with a computer software. Paired sample t tests were used for statistical significance (p<0.05).
Cephalometric comparisons between original and digital images showed statistically significant differences for S-Go, N-Me and ANS-Me. None of the means of the difference between the two methods exceeded 2mm.
In general, both methods of manual and digital cephalometric analysis are highly reliable. Although the reproducibility of the two methods showed some statistically significant differences, most differences were not clinically significant.