The temporomandibular joint (TMJ) connects your lower jaw (mandible) to the skull and plays a crucial role in chewing and speaking. When this joint is misaligned or under strain, it can lead to discomfort and a range of symptoms, including headaches, earaches, jaw pain, and difficulty opening or closing the mouth. TMJ disorders can result from misaligned teeth, trauma, or excessive muscle tension, affecting not just the jaw but the surrounding muscles and cartilage.