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

Maxillofacial Plastic and Reconstructive Surgery

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

Parameters	SFA group (n = 8)		CA group (n = 20)		P value
Parameters	Mean	P value	Mean	P value	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	0.012^a	−9.51 ± 6.46	0.000^a	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	0.003^a	0.672
HRP-PNS (mm)	−3.04 ± 2.35	0.017^a	−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	0.012^a	−4.79 ± 3.05	0.000^a	0.469
ANB (°)	6.02 ± 3.05	0.012^a	6.04 ± 2.24	0.000^a	0.709
Occlusal plane angle (°)	2.01 ± 3.66	0.208	3.61 ± 4.72	0.004^a	0.636