Which statement accurately describes bruxism in relation to TMD loading?

Which statement accurately describes bruxism in relation to TMD loading?

• A. Bruxism reduces compressive loads on TMJ
• B. Bruxism increases compressive loads on TMJ and masticatory muscles
• C. Bruxism has no effect on TMJ loading
• D. Bruxism cures TMD

Answer: (B)

Bruxism involves parafunctional grinding and clenching of the teeth, which drives repetitive, high-intensity jaw muscle contractions. Those strong contractions push more force through the bite, increasing compressive loads on the temporomandibular joint and loading the surrounding masticatory muscles. In the context of TMD, this added mechanical stress can worsen joint structures (like the disc and articular surfaces) and overwork the muscles, contributing to pain, fatigue, and dysfunction. So the statement that bruxism increases compressive loads on both the TMJ and masticatory muscles best reflects how bruxism relates to TMD loading. It wouldn’t reduce loads, have no effect, or cure TMD.

Bruxism involves parafunctional grinding and clenching of the teeth, which drives repetitive, high-intensity jaw muscle contractions. Those strong contractions push more force through the bite, increasing compressive loads on the temporomandibular joint and loading the surrounding masticatory muscles. In the context of TMD, this added mechanical stress can worsen joint structures (like the disc and articular surfaces) and overwork the muscles, contributing to pain, fatigue, and dysfunction. So the statement that bruxism increases compressive loads on both the TMJ and masticatory muscles best reflects how bruxism relates to TMD loading. It wouldn’t reduce loads, have no effect, or cure TMD.