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The temporomandibular joint connects the lower jaw to the temporal bone of the skull and is responsible for bringing the lower and upper jaws together. It is one of the most frequently used joints in the body. Depending on the underlying cause, jaw pain can occur suddenly or build up over time.
One of the most common reasons for jaw pain is stress to the temporomandibular joint, leading to temporomandibular joint disorder, or TMD. The temporomandibular joint is immediately in front of the ear on each side of your head. Muscles, tendons, ligaments, and other soft tissues surround the joint.