TABLE 2.
Intraobserver comparisons for landmarks placed on the maxillary teeth (Landmarks 1–6)
| R1 |
R1 |
R2 |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | BA 95%LoA | ICC | Mean | SD | BA 95%LoA | ICC | Mean | SD | BA 95%LoA | ICC | |||||
| Maxillary right first molar (Landmark 1) | X | 0.02 | 0.05 | −0.08 | 0.11 | 0.999 | 0.00 | 0.12 | −0.24 | 0.24 | 0.995 | −0.02 | 0.08 | −0.19 | 0.14 | 0.998 |
| Y | −0.01 | 0.06 | −0.12 | 0.10 | 1.000 | 0.13 | 0.32 | −0.51 | 0.76 | 0.986 | −0.02 | 0.33 | −0.66 | 0.63 | 0.987 | |
| Z | 0.00 | 0.02 | −0.04 | 0.03 | 0.999 | −0.05 | 0.22 | −0.48 | 0.39 | 0.956 | −0.04 | 0.21 | −0.45 | 0.37 | 0.973 | |
| Maxillary right lateral incisor (Landmark 2) | X | 0.01 | 0.06 | −0.10 | 0.12 | 0.999 | −0.10 | 0.23 | −0.54 | 0.34 | 0.977 | 0.00 | 0.27 | −0.52 | 0.53 | 0.977 |
| Y | −0.01 | 0.04 | −0.10 | 0.07 | 1.000 | 0.06 | 0.18 | −0.30 | 0.41 | 0.997 | −0.02 | 0.17 | −0.34 | 0.31 | 0.998 | |
| Z | 0.01 | 0.06 | −0.10 | 0.11 | 0.998 | 0.05 | 0.26 | −0.45 | 0.56 | 0.945 | 0.00 | 0.17 | −0.34 | 0.34 | 0.977 | |
| Maxillary right central incisor (Landmark 3) | X | 0.00 | 0.06 | −0.12 | 0.13 | 0.997 | −0.12 | 0.28 | −0.66 | 0.42 | 0.917 | 0.00 | 0.33 | −0.65 | 0.65 | 0.945 |
| Y | −0.02 | 0.05 | −0.11 | 0.08 | 1.000 | 0.03 | 0.13 | −0.22 | 0.27 | 0.999 | −0.01 | 0.10 | −0.21 | 0.19 | 0.999 | |
| Z | 0.01 | 0.06 | −0.12 | 0.13 | 0.999 | 0.07 | 0.27 | −0.45 | 0.60 | 0.981 | 0.01 | 0.18 | −0.33 | 0.36 | 0.993 | |
| Maxillary left central incisor (Landmark 4) | X | 0.00 | 0.06 | −0.12 | 0.13 | 0.997 | −0.12 | 0.28 | −0.66 | 0.43 | 0.921 | 0.00 | 0.33 | −0.65 | 0.65 | 0.918 |
| Y | −0.02 | 0.06 | −0.14 | 0.10 | 1.000 | 0.00 | 0.14 | −0.28 | 0.27 | 0.999 | 0.00 | 0.09 | −0.18 | 0.18 | 1.000 | |
| Z | 0.01 | 0.07 | −0.12 | 0.14 | 0.999 | 0.09 | 0.25 | −0.39 | 0.57 | 0.979 | 0.03 | 0.18 | −0.33 | 0.39 | 0.990 | |
| Maxillary left lateral incisor (Landmark 5) | X | 0.01 | 0.06 | −0.10 | 0.12 | 0.998 | −0.10 | 0.22 | −0.53 | 0.32 | 0.973 | 0.00 | 0.28 | −0.55 | 0.55 | 0.959 |
| Y | −0.02 | 0.07 | −0.17 | 0.12 | 1.000 | −0.03 | 0.20 | −0.43 | 0.37 | 0.997 | 0.00 | 0.16 | −0.31 | 0.30 | 0.998 | |
| Z | 0.01 | 0.06 | −0.10 | 0.12 | 0.999 | 0.08 | 0.20 | −0.32 | 0.48 | 0.984 | 0.04 | 0.19 | −0.33 | 0.40 | 0.989 | |
| Maxillary left first molar (Landmark 6) | X | 0.02 | 0.05 | −0.08 | 0.11 | 0.999 | 0.01 | 0.12 | −0.24 | 0.25 | 0.994 | −0.02 | 0.08 | −0.19 | 0.14 | 0.997 |
| Y | −0.03 | 0.10 | −0.23 | 0.17 | 0.999 | −0.08 | 0.35 | −0.76 | 0.60 | 0.988 | 0.00 | 0.31 | −0.60 | 0.61 | 0.991 | |
| Z | 0.00 | 0.03 | −0.05 | 0.06 | 0.999 | 0.02 | 0.20 | −0.38 | 0.42 | 0.964 | 0.04 | 0.21 | −0.38 | 0.46 | 0.940 | |
Note: Mean and Standard deviation (SD) of the differences, Bland-Altman (BA) 95% limits of agreement, Intraclass correlation coefficient (ICC) between the coordinates (X, right-left or lateral; Y, antero-posterior or sagittal; and Z, superior-inferior or vertical) of the corresponding landmarks. R1 landmark-based registration on the posterior teeth; R2, landmark-based registration on the palate: R3, registration on the palate using regions of interest.