| TMD | Temporomandibular Disorder |
| ID | Internal Derangement |
| TMJ | Temporomandibular Joint |
| MRI | Magnetic Resonance Imaging |
| US | Ultrasonography |
| ADD | Anterior Disc Displacement |
| MHz | MegaHertz |
| DD | Disc Displacement |
| JE | Joint Effusion |
| CE | Condylar Erosion |
| Se | Sensitivity |
| Spe | Specificity |
| Ac | Accuracy |
| PPV | Positive Predictive Value |
| NPV | Negative Predicted Value |
| DC/TMD | Diagnostic Criteria for Temporomandibular Disorders |
| CT | Computed Tomography |
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