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Table 4 Comparison of dental midline deviation, SNB angle, and SN-MP angle between the different time points in the USSRO and BSSRO groups: T0 (preoperative), T1 (immediately after surgery), T2 (1 year after surgery)

From: Comparison of condylar morphology changes and position stability following unilateral and bilateral sagittal split mandibular ramus osteotomy in patients with mandibular prognathism

Parameters Dental midline deviation (mm) SNB changes (°) SN-MP changes (°)
T0-T1 T1-T2 T0-T1 T1-T2 T0-T1 T1-T2
USSRO 3.9 0.4 ± 0.1 5.4 ± 1.6 1.5 ± 0.5 2.3 ± 0.8 1.0 ± 0.6
BSSRO 4.8 0.4 ± 0.1 5.6 ± 2.7 1.4 ± 0.4 3.3 ± 0.9 2.0 ± 0.7
P-value within USSRO < 0.01** 0.163 < 0.01** 0.438 < 0.01** 0.232
P-value within BSSRO < 0.01** 0.235 < 0.01** 0.419 < 0.01** 0.147
P-value between USSRO and BSSRO < 0.01** 0.062 < 0.01** 0.462 0.267 0.082
  1. T0: preoperative, T1: immediately after surgery, T2: 1 year after surgery, **: P < 0.01