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Table 3 Comparison of TMJ morphologic parameters of uPSB patients distributed in different age subgroups

From: A pilot investigation of condylar position and asymmetry in patients with unilateral posterior scissors-bite malocclusion based on three-dimensional reconstructive imaging technique

Variables

Age distribution (years)

F or H value

P value

12 ~ 20, ( N  = 36)

21 ~ 30, ( N  = 41)

 ≥ 31, ( N  = 18)

CV (mm3)

 uPSB side

1706.48 ± 644.29

1783.84 ± 491.94

1710.76 ± 548.43

0.211

0.810

 normal side

1606.76 ± 562.27

1681.79 ± 494.95

1728.74 ± 532.82

0.369

0.692

CSA (mm2)

 uPSB side

774.44 (627.86, 1013.93)

857.34 (704.30, 935.10)

774.66 (685.32, 941.65)

0.809

0.667

 normal side

776.44 ± 191.70

797.87 ± 157.03

813.08 ± 177.71

0.296

0.744

CMI

 uPSB side

2.05 ± 0.25

2.10 ± 0.23

2.09 ± 0.18

0.560

0.573

 normal side

2.02 ± 0.24

2.07 ± 0.23

2.09 ± 0.22

0.757

0.472

FV (mm3)

 uPSB side

653.87 ± 233.60

567.39 ± 271.89

552.81 ± 257.92

1.438

0.243

 normal side

660.82 ± 283.05

551.73 ± 216.62

560.19 ± 250.85

2.036

0.136

FSA (mm2)

 uPSB side

618.79 ± 136.96

564.12 ± 165.93

573.93 ± 151.84

1.303

0.277

 normal side

621.59 ± 151.58

564.08 ± 139.52

574.38 ± 163.44

1.522

0.224

FMI

 uPSB side

1.03 ± 0.22

0.95 ± 0.24

0.93 ± 0.21

1.636

0.200

 normal side

1.03 ± 0.23

0.95 ± 0.19

0.93 ± 0.24

1.720

0.185

CV%

 uPSB side

258.67 ± 136.09

173.79 ± 134.61

182.16 ± 106.84

4.474

0.014*

 normal side

245.28 (144.39, 315.25)

132.44 (63.49, 224.39)

182.69 (86.51, 247.43)

13.196

0.001*

CSA%

 uPSB side

62.23 ± 44.44

45.45 ± 31.31

43.63 ± 28.10

2.555

0.038*

 normal side

64.10 (35.07, 81.42)

32.94 (21.14, 61.21)

46.97 (16.67, 66.96)

7.636

0.022*

SJS (mm)

 uPSB side

1.91 (1.40, 3.12)

2.63 (2.02, 4.22)

2.36 (1.59, 4.27)

8.954

0.011*

 normal side

1.77 (1.10, 2.73)

2.07 (1.77, 3.15)

2.46 (1.47, 4.10)

6.207

0.045*

AJS (mm)

 uPSB side

3.62 ± 1.37

4.14 ± 1.43

4.14 ± 1.66

1.444

0.241

 normal side

3.36 ± 1.19

3.40 ± 1.25

4.50 ± 1.47

5.680

0.005*

PJS (mm)

 uPSB side

3.07 (2.42, 4.10)

3.15 (2.28, 4.42)

2.62 (1.74, 3.63)

1.880

0.391

 normal side

2.96 (1.96,3.96)

3.08 (2.50, 4.42)

3.43 (2.11, 4.78)

2.827

0.243

MJS (mm)

 uPSB side

3.12 ± 0.99

3.47 ± 1.47

3.61 ± 1.59

1.045

0.356

 normal side

2.82 (1.67, 3.49)

3.59 (2.64, 4.48)

4.18 (2.96, 5.76)

8.274

0.016*

  1. AJS Anterior joint space, CV Condylar volume, CV% The proportion of condylar volume in the articular fossa, CMI Condylar morphological index, CSA Condylar superficial area, CSA% The proportion of the condylar superficial area in the articular fossa, FMI Fossa morphological index, FSA Fossa superficial area, FV Fossa volume, MJS Medial joint space, PJS Posterior joint space, SJS Superior joint space
  2. *considered as significantly statistical difference
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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