Of all the joints in the body the jaw joints or TMJ’s ( temporo-mandibular joints) are the only ones that move simultaneously. This creates problems that are unique to the jaw area. TMJ disorders can occur when the disc erodes or moves out of its proper alignment, the joint’s cartilage is damaged by arthritis, the joint is damaged by a blow, or the joint muscles become fatigued from overwork.
Teeth grinding is a condition of clenching, grinding, or gnashing the teeth either unconsciously during the day, or at night while sleeping. The medical term for teeth grinding is bruxism, and nighttime teeth grinding is called sleep bruxism. Bruxism, if severe enough, can cause headaches, tooth damage and jaw problems or disorders, but it may often go undiagnosed, especially with sleep bruxism.