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Table 1 Surgical movement of group 1 and group 2

From: Postoperative changes in the pharyngeal airway space through computed tomography evaluation after mandibular setback surgery in skeletal class III patients: 1-year follow-up

Surgical variable Mean ± SD P value
Group1 (n = 23) Group2 (n = 14)
Maxillary posterior impaction (mm)a 4.23 ± 3.14
Advancement of maxilla (mm)b 0.81 ± 2.11
Mandibular setback amount (mm)c 4.85 ± 4.34 6.81 ± 5.14 0.223
Changes of mandibular plane angle (°)d 3.54 ± 4.56 2.17 ± 4.24 0.371
  1. aMaxillary posterior impaction was defined as the upward movement of the posterior nasal spine
  2. bAdvance of maxilla was defined as the forward movement of the anterior nasal spine
  3. cMandibular setback amount was measured through the distance difference from sella vertical plane to B point
  4. dMandibular plane angle, the angle between FH plane and mandibular plane
  5. Independent t-test was performed and P values < 0.05 are statistically significant