Table 3 Comparison between 458 JE and 458 NA TMJs
NA side (n = 458) | JE side (n = 458) | P value | r, P | ||
|---|---|---|---|---|---|
Joint sounds | normal (%) | 302 (65.9) | 272 (59.4) | χ2 = 4.200, P = 0.040 | r = 0.068, P = 0.040 |
abnormal (%) | 156 (34.1) | 186 (40.6) | |||
Joint pain | normal (%) | 365 (79.7) | 158 (34.5) | χ2 = 190.960, P = 0.000 | r = 0.457, P = 0.000 |
abnormal (%) | 93 (20.3) | 300 (65.5) | |||
Disc morphology | biconcave (%) | 164 (35.8) | 84 (18.3) | χ2 = 70.635, P = 0.000 | r = 0.157, P = 0.000 |
lengthened (%) | 57 (12.4) | 33 (7.2) | |||
contracture (%) | 160 (34.9) | 285 (62.2) | |||
irregular (%) | 77 (16.8) | 56 (12.2) | |||
Disc position | NA (%) | 126 (27.5) | 46 (10.0) | χ2 = 53.983, P = 0.000 | r = 0.225, P = 0.000 |
ADDWR (%) | 121 (26.4) | 111 (24.2) | |||
ADDWoR (%) | 203 (44.3) | 291 (63.5) | |||
PDDWR (%) | 6 (1.3) | 6 (1.3) | |||
PDDWoR (%) | 2 (0.4) | 4 (0.9) | |||
Condylar bone | normal (%) | 235 (51.3) | 218 (47.6) | χ2 = 1.262, P = 0.261 | - |
abnormal (%) | 223 (48.7) | 240 (52.4) | |||
Bone marrow oedema | absence (%) | 450 (98.3) | 448 (97.8) | χ2 = 0.227, P = 0.634 | - |
presence (%) | 8 (1.7) | 10 (2.2) |