Table 1 Clinical examination findings and rates of complications as per the modified classification method.

From: Association between the clinical features of and types of temporomandibular joint ankylosis based on a modified classification system

Types

Patients

Gender(Male/Female)

Age of visit for TMJ ankylosis (y)

Age of occurrence of facial trauma (y)

MMO(mm)

Mandibular asymmetry(%)

Mandibular retrusion(%)

OSAS(%)

I

11

8/3

39.6 ± 10.4

39.2 ± 10.6

14.9 ± 8.2

0

0

0

II

21

10/11

17.3 ± 13.8

14.6 ± 12.4

11.6 ± 6.6

7 (33%)

2 (9%)

0

III

25

14/11

22.3 ± 13.5

11.1 ± 8.3

7.4 ± 4.9

9 (36%)

8 (32%)

1 (4%)

IV

14

10/4

29.2 ± 16

7 ± 2.9

1.9 ± 2.9a

5 (36%)b

12 (86%)c

4 (29%)d

Total

71

42/29

   

21

22

5

  1. TMJ: temporomandibular joint; MMO: maximal mouth opening; OSAS: obstructive sleep apnea syndrome; ap < 0.05, intergroup comparisons among types I, II, III, and IV for maximal mouth opening; bp > 0.05, intergroup comparisons among types II, III, and IV for rate of mandibular asymmetry; cp < 0.05, intergroup comparisons between types III and IV for rate of mandibular retrusion; dp < 0.05, intergroup comparisons between types III and IV for rate of OSAS.
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