Table 2 Mandibular range of motion in children with JIA and in healthy children

AMIO (mm; mean, SD)

45.7 (7.6)

49.0 (6.1)

0.000^a

41.6 (8.7)

47.5 (6.4)

0.000^a

PMIO (mm; mean, SD)

47.4 (7.9)

50.4 (6.1)

0.000^a

44.1 (8.7)

48.8 (7.0)

0.000^a

Protrusion (mm; mean, SD)

7.5 (2.2)

8.5 (2.2)

0.000^a

7.3 (2.4)

7.6 (2.2)

0.462^a

Laterotrusion left (mm; mean, SD)

9.4 (2.1)

9.7 (1.6)

0.092^a

9.1 (2.2)

9.6 (1.8)

0.032^a

Laterotrusion right (mm; mean, SD)

9.4 (2.1)

9.7 (1.6)

0.044^a

9.0 (2.3)

9.6 (1.8)

0.019^a

Discrepancy between left and right laterotrusion (mm; mean, SD)

1.0 (1.3)

0.3 (0.5)

0.000^a

1.2 (1.6)

0.6 (0.9)

0.000^a

Overbite (mm; mean, SD)

2.5 (1.4)

2.3 (1.5)

0.127^a

2.3 (1.3)

2.5 (1.4)

0.181^a

Overjet (mm; mean, SD)

2.9 (1.7)

3.0 (1.4)

0.880^a

3.0 (1.8)

2.9 (1.7)

0.509^a

Deviation AMIO* (n, %)

51 (17.1)

1 (0.6)

0.000^b

46 (50.0)

5 (2.4)

0.000^b

Deviation protrusion* (n, %)

38 (12.8)

0 (0.0)

0.000^b

31 (33.7)

7 (3.4)

0.000^b

Limited condylar sliding (n, %)

17 (5.7)

1 (0.6)

0.006^b

14 (15.2)

3 (1.5)

0.000^b