Table 3.
Summary of Euclidean distances between the first and second measures of Observer 2
Landmarka | Galileos® (n = 10) | Next Generation i-CAT® (n = 10) | Wilcoxon rank-sum p-valueb | ||||||||||
Mean | Standard deviation | Median | Minimum | Maximum | Range | Mean | Standard deviation | Median | Minimum | Maximum | Range | ||
A | 1.33 | 0.7441 | 1.34 | 0.22 | 2.30 | 2.08 | 0.87 | 0.6807 | 0.69 | 0.14 | 2.56 | 2.42 | 0.1403 |
ANS | 1.21 | 0.5489 | 1.24 | 0.36 | 2.01 | 1.65 | 0.81 | 0.3232 | 0.76 | 0.30 | 1.50 | 1.20 | 0.1041 |
B point | 1.10 | 1.1314 | 0.78 | 0.00 | 3.96 | 3.96 | 1.11 | 0.9531 | 0.65 | 0.33 | 3.08 | 2.75 | 0.9097 |
Condylion | 0.88 | 0.4143 | 0.81 | 0.36 | 1.66 | 1.30 | 1.29 | 0.8352 | 0.99 | 0.28 | 2.94 | 2.66 | 0.2730 |
Gonion | 2.22 | 1.4223 | 2.01 | 0.97 | 5.97 | 5.00 | 2.17 | 2.6125 | 1.11 | 0.54 | 9.21 | 8.67 | 0.3447 |
Sella | 1.14 | 0.3651 | 1.07 | 0.79 | 2.05 | 1.26 | 0.70 | 0.3329 | 0.76 | 0.28 | 1.22 | 0.94 | 0.0140 |
Sigmoid notch | 0.66 | 0.3765 | 0.65 | 0.00 | 1.18 | 1.18 | 0.72 | 0.3189 | 0.66 | 0.22 | 1.35 | 1.13 | 0.8501 |
Lower molar | 1.62 | 2.8720 | 0.71 | 0.50 | 9.78 | 9.28 | 0.78 | 0.3043 | 0.75 | 0.37 | 1.24 | 0.87 | 0.9698 |
Md1 root | 1.06 | 0.4718 | 1.03 | 0.36 | 2.00 | 1.64 | 1.35 | 1.2494 | 0.86 | 0.44 | 4.53 | 4.10 | 0.9698 |
Md1 tip | 0.76 | 0.2303 | 0.78 | 0.41 | 1.12 | 0.71 | 1.14 | 1.4264 | 0.79 | 0.32 | 5.12 | 4.81 | 0.9097 |
Me | 1.74 | 0.9794 | 1.24 | 0.94 | 3.58 | 2.64 | 0.94 | 0.6970 | 0.81 | 0.28 | 2.65 | 2.36 | 0.0140 |
Mx1 root | 1.13 | 0.5506 | 1.25 | 0.10 | 1.82 | 1.72 | 1.07 | 0.4657 | 0.91 | 0.51 | 1.67 | 1.16 | 0.8501 |
Mx1 tip | 0.74 | 0.3515 | 0.75 | 0.28 | 1.32 | 1.03 | 0.75 | 0.3799 | 0.63 | 0.30 | 1.48 | 1.18 | 0.9698 |
Nasion | 1.06 | 0.7877 | 0.78 | 0.22 | 2.71 | 2.49 | 1.58 | 1.5303 | 0.80 | 0.28 | 4.71 | 4.43 | 0.5706 |
Orbitale | 1.55 | 1.3124 | 1.35 | 0.10 | 4.46 | 4.36 | 0.63 | 0.4805 | 0.53 | 0.00 | 1.67 | 1.67 | 0.0757 |
PNS | 1.44 | 1.3110 | 0.83 | 0.20 | 4.04 | 3.84 | 1.53 | 1.5306 | 1.13 | 0.37 | 5.40 | 5.02 | 0.7913 |
Pog | 1.83 | 1.8577 | 1.23 | 0.35 | 5.91 | 5.56 | 1.35 | 1.2704 | 0.98 | 0.37 | 4.51 | 4.14 | 0.7337 |
Upper molar | 0.79 | 0.2704 | 0.83 | 0.36 | 1.22 | 0.86 | 0.99 | 0.4659 | 0.82 | 0.45 | 1.98 | 1.53 | 0.4274 |
See Table 1 for definitions of the landmarks.
Significance probability associated with the Wilcoxon rank-sum test to assess whether the distributions for the Euclidean distances differed between machines. Highlighting in bold indicates the significance value of <0.05.
Galileos is manufactured by Sirona Dental Systems Inc., Bensheim, Germany and Next Generation i-CAT by Imaging Sciences International, Hatfield, PA.