Table 3.
Pearson Correlation Between Lateral Cephalometric Measurements and Corresponding 3D Photogrammetry Measurementsa
| Measurement |
P Value |
R Value |
R2 Value |
Statistical Significance |
Correlation Strength |
| AP | |||||
| SNA (°) vs StAM-MC (°) | .857 | 0.043 | 0.00185 | ||
| SNB (°) vs StBM-MC (°) | .518 | −0.153 | 0.02341 | ||
| Wits (mm) vs SA-MC - SB-MC (mm) | .021 | 0.511 | 0.26112 | ||
| ANB (°) vs StAM-StBM (°) | <.0001 | 0.771 | 0.59444 | ** | Strong |
| Vertical | |||||
| LAFH (mm) vs 3DLAFH (mm) | <.0001 | 0.888 | 0.78854 | ** | Very strong |
| TAFH (mm) vs 3DTAFH (mm) | <.0001 | 0.758 | 0.57456 | ** | Strong |
| MP-SN (°) vs StMP-MA (°) | .005 | 0.601 | 0.3612 | ||
| MP-FH (°) vs StMP-MA (°) | .002 | 0.643 | 0.41345 | ** | Strong |
| Dental | |||||
| U1-NA (°) vs U1-MC (°) | .001 | 0.671 | 0.45024 | ** | Strong |
| U1-SN (°) vs U1-MC (°) | <.0001 | 0.726 | 0.52708 | ** | Strong |
| L1-MP (°) vs L1-MC (°) | <.0001 | 0.715 | 0.51123 | ** | Strong |
| L1-NB (°) vs L1-MC (°) | <.0001 | 0.818 | 0.66912 | ** | Very strong |
| L1-NB (mm) vs L1-MC (mm) | <.0001 | 0.73 | 0.5329 | ** | Strong |
| U1-NA (mm) vs U1-MC (mm) | .092 | 0.386 | 0.149 | ||
a
Strength of correlation coefficient (R) is estimated as follows: 0.8–1 (very strong), 0.6–0.79 (strong), 0.4–0.59 (moderate), 0.2–0.39 (weak), and 0–0.19 (very weak).
**
Correlation is significant at P < .004 for 15 distinct 2D measurements.