Table 2.
Comparison of Dentoskeletal Features at Pre-Treatment (T1) Between the Miniplate/FM Group and the RME/FM Groupa
| Cephalometric Measurements |
Miniplate/FM (n = 20) |
RME/FM (n = 23) |
P Value |
Sig |
||
| Mean |
SD |
Mean |
SD |
|||
| Cranial base | ||||||
| Saddle angle (°) | 133.9 | 3.5 | 131.9 | 3.2 | .075 | NS |
| Maxillary skeletal | ||||||
| SNA (°) | 77.4 | 2.5 | 79.2 | 3.4 | .032 | * |
| Midfacial length (Co-A) (mm) | 79.2 | 4.6 | 79.3 | 4.0 | .865 | NS |
| A to N perpendicular FH (mm) | -3.4 | 1.9 | -3.2 | 3.7 | .526 | NS |
| SNO (°) | 59.3 | 4.3 | 61.7 | 5.1 | .056 | NS |
| Mandibular skeletal | ||||||
| SNB (°) | 79.3 | 3.1 | 80.1 | 3.6 | .394 | NS |
| Mandibular length (Co-Gn) (mm) | 111.9 | 7.1 | 111.0 | 6.5 | .865 | NS |
| Gonial angle (°) | 129.0 | 5.1 | 126.6 | 4.9 | .100 | NS |
| Maxillary/mandibular | ||||||
| ANB (°) | -1.8 | 1.8 | -0.9 | 1.8 | .071 | NS |
| Wits appraisal (mm) | -9.5 | 2.8 | -7.5 | 2.8 | .027 | * |
| Maxillo-mandibular differential (mm) | 32.6 | 4.7 | 31.7 | 3.9 | .635 | NS |
| Angle of convexity (°) | -4.2 | 3.7 | -2.0 | 4.4 | .119 | NS |
| Vertical skeletal | ||||||
| Palatal plane angle (°) | 0.5 | 2.6 | 1.6 | 3.0 | .263 | NS |
| FMA (°) | 30.0 | 3.8 | 29.5 | 3.9 | .635 | NS |
| Lower anterior facial height (mm) | 64.8 | 4.3 | 64.8 | 4.4 | .981 | NS |
| Dentoalveolar | ||||||
| U1 to FH (°) | 112.3 | 6.3 | 111.9 | 7.6 | .961 | NS |
| L1 to MP (°) | 81.5 | 4.5 | 85.6 | 5.8 | .016 | * |
| Overbite (mm) | 2.0 | 2.3 | 2.0 | 2.6 | .798 | NS |
| Overjet (mm) | -1.6 | 2.0 | -1.6 | 1.6 | .826 | NS |
*
P < .05 (Mann-Whitney U-test).
a
FM indicates facemask; NS, Not significant; RME, rapid maxillary expansion; SD, standard deviation.