- Systemic autoimmune disease.
- It is a chronic inflammatory disease of the connective tissue that affects many joints. Small peripheral joints of the hand and foot are affected first.
- TMG symptoms are usually minimal.
- Female to male ratio is approx. 3: 1
- Radiographic properties are usually bilateral and symmetrical.
- Radiographic properties: smoothing, erosion, resorption and sclerosis of the jaw head. Decreased temporomandibular joint space. Anteriore open bite.