Accuracy of the digitizing software was tested in a previous
study (Al-Harbi et al., 2008). To test the examiners’ reliability
of digitization, 10 pairs of upper/lower models were randomly
selected, digitized twice, fitted by a polynomial curve, and
superimposed on each tested archwire. The MAE between
the wire and the tested arch was calculated. Correlation coef-
Figure 1 Orthodontic brackets and captured landmarks bonded on the model.
The fit of preformed nickel titanium arch wires on normal occlusion dental arches 3
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