Tension in the muscles of the neck and shoulder: the cause may be in the tempomandibular joint. It plays a decisive role in the triple nerve—the most significant nerve in the face and the chewing system area. Information from the triple nerve is processed in the brain stem. Anatomically, this nerve is located in close proximity to other cranial nerve nucleus. For this reason, a poor occlusion leads to a permanent electrochemical activity that transports to the adjoining nucleus and causes discomfort in the respective areas of work, which may be an expression of a DTM problem. painful tension in the throat, neck and shoulder muscles include - in addition to headaches and back pains See the enlightening figures. A dentist who specializes in this may be the solution.