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The Many Causes of TMJ Pain : |
|
| I. Masticatory Muscle Disorders | II. Chronic Mandibular Hypomobility |
| 1. Protective co-contraction | 1. Ankylosis |
| 2. Local muscle soreness | a. Fibrous |
| 3. Myofascial pain | b. Bony |
| 4. Myospasm | 2. Muscle contracture |
| 5. Centrally mediated myalgia | a. Myostatic |
| b. Myofibrotic | |
| 3. Coronoid impedence | |
| III. Temporomandibular Joint Disorder | |
| 1. Derangement of the condyle-disc complex | |
| a. Disc displacements | |
| b. Disc dislocation with reduction | |
| c. Disc dislocation without reduction | |
| 2. Structural incompatibility of Articular surfaces | |
| a. Deviation in form | |
| i. Disc | |
| ii. Condyle | |
| iii. Fossa | |
| b. Adhesions | |
| i. Disc to condyle | |
| ii. Disc to fossa | |
| c. Subluxation (hypermobility) | |
| d. Spontaneous dislocation | |
| 3. Inflammatory disorders of the TMJ | |
| a. Synovitis/Capsulitis | |
| b. Retrodiscitis | |
| c. Arthritides | |
| i. Osteoarthritis | |
| ii. Osteoarthrosis | |
| iii. Polyarthritides | |
| d. Inflammatory disorders of associated structures | |
| i. Temporalis tendonitis | |
| ii. Stylomandibular ligament inflammation | |
