Which factor is a recognized contributor to TMD and relates to stress or nervous tension?

Which factor is a recognized contributor to TMD and relates to stress or nervous tension?

• A. Posture
• B. Occlusion
• C. Stress
• D. Parafunction

Answer: (C)

Stress is a recognized contributor to TMD because it drives nervous tension that increases muscle activity in the jaw region. When people are stressed, they tend to clench or grind their teeth (a behavior known as parafunction), particularly during sleep or periods of anxiety. This sustained jaw muscle contraction and repetitive loading of the temporomandibular joint and surrounding muscles can produce or worsen myofascial pain, muscle tenderness, and joint strain, leading to TMD symptoms such as jaw pain, limited opening, and headaches. Posture and occlusion have been discussed in relation to TMD, but they are not as directly tied to nervous tension as stress itself. Parafunction describes the behaviors (like clenching and grinding) that often arise from stress, but the factor that originates the tension behind those behaviors is stress itself, making it the best answer in this context.

Stress is a recognized contributor to TMD because it drives nervous tension that increases muscle activity in the jaw region. When people are stressed, they tend to clench or grind their teeth (a behavior known as parafunction), particularly during sleep or periods of anxiety. This sustained jaw muscle contraction and repetitive loading of the temporomandibular joint and surrounding muscles can produce or worsen myofascial pain, muscle tenderness, and joint strain, leading to TMD symptoms such as jaw pain, limited opening, and headaches.

Posture and occlusion have been discussed in relation to TMD, but they are not as directly tied to nervous tension as stress itself. Parafunction describes the behaviors (like clenching and grinding) that often arise from stress, but the factor that originates the tension behind those behaviors is stress itself, making it the best answer in this context.