Table 2.
A comparison of clinical and MRI findings in the TMD group and control group (Fisher’s exact test).
| TMD (n=55) | Control (n=26) | P value | |
|---|---|---|---|
| TMJ pain* | 43 (88) | 0 (0) | <0.001 |
| Trismus* | 22 (42) | 0 (0) | <0.001 |
| ADD | 41 (75) | 7 (27) | <0.001 |
| Disc deformation | 37 (67) | 6 (23) | <0.001 |
| Effusion† | 27 (50) | 7 (27) | 0.058 |
| Caput flattening† | 30 (56) | 4 (15) | 0.001 |
| Surface destructions | 29 (53) | 7 (27) | 0.034 |
| Osteophytes | 32 (58) | 6 (23) | 0.004 |
| Caput edema | 26 (47) | 1 (4) | <0.001 |
Values are given as n (%).
*In the TMD group, six patients had no information about pain on palpation of the TMJ registered in the journal (n = 49 for TMJ pain) and two patients lacked information about maximum mouth opening (n = 53 for trismus).
†n = 54 in the TMD group due to difficulties in determining presence or absence of effusion in one patient and caput flattening in another patient from the existing MR images.
ADD, anterior disc displacement; MRI, magnetic resonance imaging; TMD, temporomandibular disorder; TMJ, temporomandibular joint.