The temporomandibular joint (TMJ) is a crucial component that acts as a sliding hinge, connecting each side of the jaw bone to the temporal bones of the skull. This joint is supported by cartilage and shock-absorbing disks, facilitating smooth movements for the jaw during the process of opening and closing. With one joint on each side of the jaw, any issues that arise within these joints or the surrounding muscles can lead to the development of temporomandibular joint dysfunction. This condition, often abbreviated as TMJ dysfunction, is characterized by pain experienced in the jaw, joint, or temporal bone areas of the skull.
Cause
The exact cause of TMJ dysfunction is still unknown to doctors and dentists. However, it seems to vary from person to person, depending on their habits and medical history. One possible cause of TMJ dysfunction is the erosion or displacement of the shock-absorbing disk within the joint. Additionally, individuals with arthritis may develop painful TMJ dysfunction as a result of cartilage damage. TMJ dysfunction can also be caused by an injury to the joint or the surrounding area due to an impact.
Risk Factors
TMJ dysfunction can be caused by various factors, including underlying conditions such as rheumatoid arthritis and osteoarthritis. People with connective tissue diseases are also at a higher risk of developing TMJ dysfunction. Additionally, injuries to the jaw or surrounding bone, even if they do not directly affect the temporomandibular joints, can increase the likelihood of developing this condition.
Another significant risk factor for TMJ dysfunction is long-term teeth grinding or clenching. This repetitive strain on the jaw joint can eventually lead to dysfunction and discomfort. Furthermore, individuals who experience high levels of stress in their lives are more prone to developing TMJ dysfunction. Stress often contributes to clenching and grinding of the teeth, exacerbating the condition.