Table 1 Demographics of the study population.
From: Analysis and prediction of condylar resorption following orthognathic surgery
Mean (sd) | Median [IQR] | |
|---|---|---|
n | 200 | |
Age | 24.5 (11.4) | 19.0 [16.0, 30.3] |
Sex | ||
Male (%) | 84 (42) | |
Female (%) | 116 (58) | |
Class | ||
II (%) | 160 (80) | |
III (%) | 40 (20) | |
BMI | 22.1 (3.8) | 21.3 [19.6, 24.2] |
Preoperative mouth opening (mm) | 47.0 (6.5) | 46.0 [42.0, 51.0] |
Preoperative TMJ pain | ||
No (%) | 166 (83) | |
Bilateral (%) | 10 (5) | |
Left (%) | 15 (7.5) | |
Right (%) | 9 (4.5) | |
Preoperative TMJ-sounds | ||
No (%) | 122 (61) | |
Bilateral (%) | 25 (12.5) | |
Left (%) | 31 (15.5) | |
Right (%) | 22 (11.0) | |
Procedure | ||
BSSO (%) | 92 (46) | |
BIMAX (%) | 54 (27) | |
BIMAX & Genioplasty (%) | 27 (13.5) | |
BSSO & Genioplasty (%) | 27 (13.5) | |
Mandibular Left–Right translationa (mm) | − 0.3 (1.9) | 0.0 [− 1.2, 0.9] |
Mandibular Antero-Posterior translationa (mm) | 4.0 (5.0) | 4.9 [0.8, 7.3] |
Mandibular Up-Down translationa (mm) | 0.5 (2.9) | 0.2 [− 1.2, 2.0] |
Mandibular Pitchb (°) | − 2.2 (4.2)) | − 2.0 [− 4.5, − 0.2] |
Mandibular Rollb (°) | − 0.1 (1.5) | − 0.1 [− 1.0, 0.6] |
Mandibular Yawb (°) | − 0.4 (2.1) | − 0.3 [− 1.4, 0.8] |
Preoperative Left Condylar Volume (mm3) | 1706.7 (537.2) | 1652.2 [1338.9, 1989.9] |
Preoperative Right Condylar Volume (mm3) | 1712.9 (551.7) | 1626.5 [1387.6, 2004.9] |
A/P lower facial height ratio | 1.2 (0.2) | 1.2 [1.1, 1.3] |
Mandibualr plane angle (°) | 39.4 (7.9) | 38.9 [33.7, 44.8] |
