Presurgical (T0) cephalometric analysis of the MR group and LR group
| Measurements | MR group | LR group | Sig. | ||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| Mandibular anterior and posterior measurements | |||||
| S-perp to Pog (mm) | 82.02 | 8.54 | 80.16 | 8.88 | NS |
| S-perp to Me (mm) | 76.05 | 8.85 | 73.93 | 9.65 | NS |
| Mn body length (mm) | 83.63 | 4.01 | 86.82 | 4.58 | NS |
| SNB (°) | 84.40 | 2.98 | 82.92 | 4.05 | NS |
| AB to Mn plane angle (°) | 55.04 | 4.45 | 60.86 | 4.71 | 0.004 |
| Angular measurements | |||||
| Articular angle (°) | 139.42 | 6.83 | 146.06 | 8.07 | 0.037 |
| Gonial angle (°) | 126.19 | 5.87 | 121.25 | 4.44 | 0.026 |
| FMA (°) | 21.94 | 6.47 | 21.94 | 4.45 | NS |
| Vertical measurements | |||||
| FH to Pog (mm) | 91.49 | 6.85 | 99.13 | 7.66 | 0.015 |
| FH to Me (mm) | 100.90 | 7.47 | 109.22 | 7.88 | 0.013 |
| Post. facial height (mm) | 88.86 | 8.83 | 97.06 | 7.43 | 0.019 |
| Ant. facial height (mm) | 133.47 | 8.26 | 142.15 | 8.40 | 0.016 |
| Dental measurements | |||||
| U1 to FH (°) | 120.26 | 6.53 | 119.84 | 7.26 | NS |
| IMPA (°) | 83.18 | 9.49 | 86.88 | 6.30 | NS |
| FH to U occlusal plane (°) | 7.94 | 5.54 | 6.30 | 3.10 | NS |
| FH to L occlusal plane (°) | 4.22 | 5.68 | 4.46 | 4.23 | NS |
| FH to U1 (mm) | 57.43 | 4.01 | 61.38 | 4.68 | 0.034 |
| FH to U6 (mm) | 53.28 | 2.89 | 57.85 | 4.40 | 0.006 |
(MR: more relapsed, LR: less relapsed, SD: standard deviation, Sig.: significant in the independent t -test, NS: not significant, FH: Frankfort horizontal, S-perp: a line perpendiculat to FH plane through Sella, FMA: Frankfort-mandibular plane angle, Post.: posterior, Ant.: anterior, IMPA: incisor mandibular plane angle)