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Table 4 TMJ condylar positions of the BSSO and control group assessed by CBCT

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

TMJ condylar position

T0

T1

T2

P

Anterior

 BSSO group (n = 72)

32 (44%)

9 (13%)

10 (14%)

< 0.000#

 Control group (n = 50)

16 (32%)

7 (16%)

12 (24%)

0.103

Concentric

 BSSO group (n = 72)

24 (33%)

44 (61%)

28 (39%)

0.002#

 Control group (n = 50)

27 (54%)

37 (74%)

26 (52%)

0.046#

Posterior

 BSSO group (n = 72)

16 (22%)

19 (26%)

34 (47%)

0.003#

 Control group (n = 50)

7 (14%)

6 (12%)

12 (24%)

0.226

  1. TMJ Temporomandibular joint, CBCT Cone-beam computed tomography, BSSO Bilateral sagittal split osteotomy, T0 Before surgery, T1 Immediately after surgery, T2 Mean follow-up at 12.1 ± 2.8 month after surgery, P Probability of type I error
  2. # Significant with chi-square analysis