Table 1. Absolute linear changes of landmarks in x, y, z axis between 2D plan and 3D plan (3D image models registered at the cranial base).
| Landmark | X-axis |
Y-axis |
Z-axis |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2D | 3D | Difference | 2D | 3D | Difference | 2D | 3D | Difference | ||||
| Mean(SD) | Mean(SD) | Mean(SD) | p value* | Mean(SD) | Mean(SD) | Mean(SD) | p value* | Mean(SD) | Mean(SD) | Mean(SD) | p value* | |
| A | 79.30 (3.76) | 78.17 (3.98) | 1.11 (1.71) | 0.03 | −121.61 (9.56) | −123.11 (9.54) | 0.50 (0.95) | 0.50 | −145.35 (4.40) | −146.06 (4.53) | 0.71 (1.01) | 0.13 |
| B | 79.60 (3.80) | 78.32 (3.51) | 1.24 (1.53) | 0.01 | −118.03 (10.81) | −118.62 (10.49) | 0.59 (0.90) | 0.30 | −184.77 (4.78) | −185.78 (4.69) | 1.02 (1.43) | 0.03 |
| U3L | 94.50 (18.22) | 93.17 (18.00) | 1.35 (1.85) | 0.01 | −114.22 (23.81) | −115.06 (23.90) | 0.84 (1.09) | 0.05 | −161.61 (30.85) | −162.47 (31.08) | 0.86 (1.17) | 0.05 |
| U3R | 59.40 (12.04) | 57.91 (11.74) | 1.53 (2.02) | 0.00 | −113.27 (23.84) | −114.19 (23.89) | 0.92 (1.52) | 0.07 | −160.40 (31.08) | −162.04 (30.93) | 0.81 (1.35) | 0.05 |
| U6L | 101.70 (19.56) | 100.09 (19.27) | 1.61 (1.81) | 0.00 | −96.34 (21.10) | −97.36 (21.23) | 1.01 (1.15) | 0.01 | −157.78 (30.22) | −158.73 (30.46) | 0.95 (1.32) | 0.04 |
| U6R | 53.70 (4.68) | 52.07 (4.49) | 1.62 (1.75) | 0.00 | −99.79 (11.03) | −100.96 (10.94) | 1.17 (1.63) | 0.02 | −162.84 (4.69) | −164.08 (4.75) | 1.24 (1.50) | 0.01 |
| UI | 79.50 (4.12) | 78.23 (4.41) | 1.31 (1.95) | 0.02 | −125.30 (9.91) | −125.95 (9.59) | 0.65 (1.24) | 0.26 | −167.39 (4.68) | −168.17 (5.13) | 0.77 (1.16) | 0.10 |
| L3L | 93.70 (3.59) | 92.34 (3.80) | 1.31 (1.85) | 0.01 | −116.23(9.31) | −117.05 (9.07) | 0.82 (1.09) | 0.06 | −166.12 (5.10) | −166.91 (5.51) | 0.79 (1.17) | 0.09 |
| L3R | 65.60 (4.50) | 64.30 (4.49) | 1.32 (1.81) | 0.01 | −115.70 (8.71) | −116.49 (8.40) | 0.78 (1.41) | 0.14 | −165.95 (5.14) | −166.86 (5.59) | 0.91 (1.36) | 0.06 |
| L6L | 99.60 (19.25) | 98.11 (18.89) | 1.52 (1.62) | 0.00 | −94.98 (21.27) | −95.85 (21.35) | 0.87 (1.04) | 0.03 | −158.69 (30.34) | −159.59 (30.56) | 0.90 (1.34) | 0.06 |
| L6R | 54.60 (10.95) | 53.10 (10.54) | 1.52 ((1.61) | 0.00 | −94.43 (20.69) | −95.32 (20.84) | 0.89 (1.25) | 0.04 | −158.77 (30.32) | −159.65 (30.51) | 0.89 (1.25) | 0.05 |
| LI | 79.90 (4.06) | 78.65 (3.76) | 1.22 (1.66) | 0.01 | −123.08 (9.55) | −123.60 (9.28) | 0.52 (0.96) | 0.45 | −167.97 (4.90) | −168.61 (5.22) | 0.64 (1.01) | 0.23 |
| Pog | 79.70 (3.70) | 78.38 (3.32) | 1.33 (1.64) | 0.00 | −118.15 (10.33) | −118.99 (9.92) | 0.84(0.99) | 0.03 | −202.68 (4.48) | −203.33 (4.68) | 0.65 (1.07) | 0.22 |
| Me | 79.70 (3.61) | 78.33 (3.24) | 1.36 (1.68) | 0.00 | −115.09 (10.55) | −116.04 (10.22) | 0.95 (1.09) | 0.02 | −206.04 (4.63) | −206.71 (4.77) | 0.66 (1.10) | 0.21 |
*The difference was considered statistically significant if p < 0.05.