A large nerve bundle is located in close proximity to the TMJ, with several branches—nerves that innervate the facial muscles, the organs of vision, and hearing, as well as those connected to the cervical spine.
With TMJ dysfunction, the joint shifts toward the ear, compressing the nerve that innervates the eardrum. Also, if the joint doesn't function properly, the muscles can exert pressure on a specific part of the nerve, causing compression both outside and inside the skull.
Depending on the degree of pressure on the nerve, different types of tinnitus may occur, such as: a faint buzzing, ringing, squeaking, buzzing, fullness, crackling, ringing, and other tinnitus.