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Table 2 Changes in in the total pharyngeal airway volume after two-jaw surgery for mandibular prognathism

From: Why most patients do not exhibit obstructive sleep apnea after mandibular setback surgery?

Ref.nAge (years, mean ± SD, range)BMISurgeryFollow-upTotal pharyngeal airway volume (cm3)
T0aT1T2T3
Hong JS (2011) [15]922.2 ± 4.8 MnS + MxA(?) (no skeletal movement information)Pre and post 2 mo8.2 (100.0%)7.1 (86.8%)  
Lee Y (2012) [23]2122.7 (18.1–33.4)20.8 ± 2.6 (17.6–26.1)MnS (setback 9.2 ± 4.6 mm), Mx pst impaction (5.3 ± 2.6 mm)Pre and post 3 mo and 6 mo25.1 (100.0%)24.3 (96.8%)24.6 (98.0%) 
Park SB (2012) [18]16Total 23.0 ± 3.0 (19–29) MnS (setback 4.2 ± 1.7 mm), MxA (adv 7.2 ± 3.4 mm)Pre and post 5 mo and 17 mo38.2 (100.0%) 33.9 (88.7%)36.2 (94.8%)
Li YM (2014) [24]2923.6 (18–35)< 30MnS (setback 5.8 ± 1.7 mm), MxA (adv 3.5 ± 0.8 mm)Pre and post 6 mo28.51 (100.0%) 26.54 (93.1%) 
Kim MA (2014) [22]2523.7 ± 4.3 MnS (setback 8.8 ± 5.5 mm), Mx pst impaction (3.4 ± 2.2 mm) 44 (100.0%) 42.3 (96.1%) 
Hsieh (2015) [20]3224.0 ± 3.9 (18–32)20.1 ± 2.5MnS (setback 7.0 mm), Mx pst impaction (3.4 mm)Pre and post 6 mo23.1 (100.0%) 20.4 (88.3%) 
Hatab (2015) [14]11Total 21.8 ± 3.4 (18–30) MnS + MxA (no skeletal movement information)Pre and post 3 mo30.3 (100.0%)27.27 (90.0%)  
Kim HS (2016) [21]3823.8 ± 5.9 (17–44)21.1 ± 2.7MnS (setback 6.2 ± 3.1 mm), Mx post impactionPre and post 3 mo and 6 mo23.4 (100.0%)20.08 (85.8%)20.09 (85.9%) 
Jang SI (2018) [6]1323.9 ± 5.224.9 ± 2.5MnS (setback 10.2 ± 3.3 mm), Mx pst impaction (3.9 ± 1.7 mm)Pre and post 7 mo15.95 (100.0%) 13.48 (84.5%) 
Lee ST (2019) [16]2323.3 ± 4.224.5 ± 4.5MnS (setback 9.9 ± 4.0 mm), Mx pst impaction (3.4 ± 1.7 mm)Pre and post 1 mo and 1 year30.5 (100.0%)25 (82.0%) 26.7 (87.5%)
Yang HJ (2020) [4]1221.8 ± 2.921.1 (17.8–25.2)MnS (setback 11.8 mm, 9.6 ~ 14.3 mm) Mx pst impaction (3.82 mm)Pre and post 4–6 mo23 (100.0%) 21.1 (91.7%) 
Total     (100.0%)(88.3%)(90.8%)(91.2%)
  1. MnS mandibular setback surgery (amount of setback), MxA maxillary advancement (adv), Mx pst impaction maxillary posterior impaction, Pre preoperative, Post postoperative, mo months.
  2. aThe preoperative state (T0) was set as 100%. T0, preoperative; T1, postoperative 1–4 months; T2, postoperative 5–6 months; T3, postoperative 1 year. The total age indicates that the study did not define the value for individual study groups