Statistical analysis: Contingency analysis of the concise screening items between the patients with JIA and the control group [frequency (%) of pathological findings per group and result of Fisher’s exact test].
| Item | Patients’ Frequency | Control Group Frequency | Fisher’s Exact Test, p* significant < 0.05 |
|---|---|---|---|
| Asymmetric mouth opening | 62% | 16% | < 0.0001* |
| Pain on palpation masticatory muscles | 61% | 22% | < 0.0001* |
| Pain on palpation TMJ | 40% | 8% | < 0.0001* |
| TMJ clicking | 22% | 12% | < 0.0018* |
| Reduced mouth-opening capacity | 19% | 18% | 0.3698 |
JIA: juvenile idiopathic arthritis; TMJ: temporomandibular joint.