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Table 2 Target registration error of mandible in the device using 3DSlicer software and Polaris optical tracker according to the number of registration marker (Mean ± SD)

From: Errors according to the number of registered markers used in navigation-assisted surgery of the mandible

Anatomic landmarks for measurement Number of registration marker (mm) P-value
  3 4 5 6 7  
Condyle head (n = 30) 1.00 ± 0.42 0.92 ± 0.43 1.07 ± 0.43 0.80 ± 0.31 1.10 ± 0.53 0.065
Condyle neck (n = 30) 1.09 ± 0.47 0.99 ± 0.40 0.95 ± 0.49 0.87 ± 0.41 1.01 ± 0.33 0.361
Coronoid process (n = 30) 1.04 ± 0.47 0.95 ± 0.40 0.99 ± 0.36 1.04 ± 0.41 1.17 ± 0.43 0.353
Sigmoid notch (n = 30) 0.85 ± 0.43 0.76 ± 0.44 1.01 ± 0.47 0.96 ± 0.33 0.93 ± 0.46 0.213
Posterior border (n = 30) 1.02 ± 0.32 0.68 ± 0.26 0.98 ± 0.37 0.80 ± 0.37 0.92 ± 0.36 0.001*
Antilingula (n = 30) 1.11 ± 0.45 0.83 ± 0.45 0.97 ± 0.30 0.96 ± 0.43 0.91 ± 0.41 0.134
Mandibular anlge (n = 30) 1.00 ± 0.37 0.90 ± 0.49 0.92 ± 0.35 0.91 ± 0.39 1.05 ± 0.38 0.545
  1. p < .05*