An Effective TMJ Treatment To Stop Chronic Headaches & Jaw Joint Pain Temporomandibular joint disorder, often referred to as TMD or TMJ, is a disorder of the jaw, jaw joint and connecting muscles and tissues. The syndrome affects the temporomandibular joint (TMJ), the joint on either side of the head that connects the lower jaw to the skull, which is vitally important for everyday activities like chewing, speaking, yawning, and more. For more information visit at downtown-dental.net. in Public bookmarkswith tmj-appliances-and-treatment-for-jaw-pain