Table 2. Minimum and maximum Euclidean distances (in mm) for orthodontists, defined as the absolute difference in millimeters between the mean value and standard deviation of each landmark, averaged across all observers.

SD, standard deviation; ICC, intraclass correlation; CI, confidence interval; PNS, posterior nasal spine; ANS, anterior nasal spine; UIA, upper incisor apex; UIB, upper incisor border; LIB, lower incisor border; LIA, lower incisor apex.