Background
Pain related to temporomandibular joint (TMJ) is very common and experienced in up to 20 -30% of the population with a female predominance (f:m = 3:1).
Clinical symptoms of TMJ disorder include also decreased mandibular movement and mastication problems.
The most common cause and clinical diagnosis for TMJ-symptoms is internal derangement of the articular disc an joint biomechanics.
Clinical evaluation of the TMJ can be unreliable due to a huge overlap of internal derangement symptoms with myofascial pain dysfunction,
that is often stress related and a psychophysiological disease.
Less common causes of TMJ-disorders are related to infection,
trauma,
neoplasm oder inflammatory arthritis.