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Table 3 Comparison of surgical change (T2-T1) on Experimental group and Control group

From: Surgery-first approach reduces the overall treatment time without damaging long-term stability in the skeletal class III correction: a preliminary study

Parameters SFA group (n = 8) CA group (n = 20) P value
Mean P value Mean P value
Horizontal measurements
 VRP-A (mm) 0.87 ± 2.46 0.575 0.63 ± 2.98 0.360 0.980
 VRP-B (mm) −9.30 ± 4.88 0.012a −9.51 ± 6.46 0.000a 0.709
 VRP-PNS (mm) 0.69 ± 3.48 0.674 −0.36 ± 3.55 0.723 0.636
Vertical measurements
 HRP-A (mm) −0.49 ± 4.87 0.484 0.50 ± 3.81 0.809 0.533
 HRP-B (mm) −1.66 ± 2.26 0.080 −2.41 ± 3.23 0.003a 0.672
 HRP-PNS (mm) −3.04 ± 2.35 0.017a −1.77 ± 4.33 0.093 0.438
Angular measurements
 SNA (°) 0.14 ± 4.88 0.263 1.25 ± 2.56 0.052 0.746
 SNB (°) −5.88 ± 3.58 0.012a −4.79 ± 3.05 0.000a 0.469
 ANB (°) 6.02 ± 3.05 0.012a 6.04 ± 2.24 0.000a 0.709
 Occlusal plane angle (°) 2.01 ± 3.66 0.208 3.61 ± 4.72 0.004a 0.636
  1. P = 0.05
  2. Wilcoxon rank sum test
  3. Mann-Whitney U test
  4. aSignificant difference