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Table 1 Baseline sample characteristics of TMJs of the BSSO and control group

From: Modeling the effect of bilateral sagittal split osteotomy on posterior, superior and medial space dimensions of the temporomandibular joint: a retrospective controlled cohort study

 

BSSO group (n = 72)

Control group (n = 50)

Total (n = 122)

P

Age (years) (mean ± SD)

37.7 (14.6)

30.3 (6.2)

33.3 (12.2)

0.017§

Gender (n) (% female)

56 (77.8)

16 (32.0)

72 (59.0)

< 0.001#

Mandibular advancement (mm)

6.1 ± 1.6

0

3.6 ± 3.2

 

Condylar position

 Anterior (%)

32 (44.4)

16 (32.0)

48 (39.3)

0.166

 Concentric (%)

24 (33.3)

27 (54.0)

51 (41.8)

0.023#

 Posterior (%)

16 (22.2)

7 (14.0)

23 (18.9)

0.253

  1. TMJ Temporomandibular joint, BSSO Bilateral sagittal split osteotomy, SD Standard deviation, mm Millimeters, n Number of TMJs, P Probability of type I error
  2. § Significant with independent sample t-test
  3. # Significant with chi-square analysis