Temporomandibular joint disorders can result from teeth grinding (bruxism), teeth clenching, injury, arthritis, retrognathia (Class II malocclusion), stress or trauma. The disorder may cause muscle pain in the jaw, behind the ears or in the neck, head, shoulders and back
Joint Disorders (TMJ)

It also can also cause chewing difficulty, abnormal tooth wear, grinding or cracking of the joint, and an inability to open the mouth completely. The pain can be relieved by various treatments, including physiotherapy or a bite plate. Sometimes, dental rehabilitation involving crowns, bridges, implants or orthodontic treatment is recommended to improve chewing and resolve TMJ problems.
For more details on temporomandibular joint disorders, please ask your dentist or view the video below.