How does arthritis typically affect the temporomandibular joint?

• A. It promotes joint movement
• B. It causes inflammation and pain
• C. It prevents jaw clenching
• D. It reduces teeth wear

Answer: (B)

Arthritis typically affects the temporomandibular joint by causing inflammation and pain. Inflammatory conditions, such as osteoarthritis and rheumatoid arthritis, lead to swelling within the joint, which can result in discomfort, stiffness, and limitations in mobility. The presence of inflammation can disrupt the normal functioning of the TMJ, making it difficult for individuals to open and close their mouths without experiencing significant discomfort.

The inflammation also affects the cartilage that lines the joint surfaces, potentially leading to further deterioration and exacerbating pain. This is a key characteristic of arthritis, distinguishing it from other conditions that may influence the TMJ, as the primary issue in arthritis is the inflammatory response that contributes to the overall joint dysfunction. Thus, the correct choice emphasizes the detrimental effects of arthritis on the temporomandibular joint's health and functionality.