TMD (temporomandibular disorders) is the name for a collective syndrome of disorders that includes abnormal function of the muscles of mastication, the temporomandibular joints and surrounding structures. It is one of the most significant causes of orofacial pain, along with dental pain. In TMD syndrome, the cause of pain is often due to overloading of the masticatory muscles rather than primary changes in the joints themselves.

Nowadays, doctors who treat patients with TMD have no doubt that one of the very important etiological factors of this condition is psycho-emotional disorders (excessive nervous excitability, anxiety, depression), which has been confirmed by numerous authors of studies on this subject [4-11].

The etiology of TMD is complex and multifactorial. Numerous factors may also contribute to the development of the disorder. An important factor affecting the state of masticatory function is an increase in stress levels (psycho-emotional tension). Structures such as the hypothalamus, reticular formation and limbic system have a decisive influence on the emotional state of each patient The activity of the limbic system, which governs the emotions of adults, and the additional connections of the gamma loops to the masticatory muscles, determine that increased emotional tension translates into a significant increase in the "contractile" activity of the masticatory muscles.

TMD and functional disorder of the masticatory muscles are the most common complaint of the patients, seeking treatment in dental office. The two main symptoms of TMD problems are pain and dysfunction. Myalgia -the most common cause is an increased level of muscle use. It is related to vasocontraction of relevant arteries and accumulation of metabolic waste product in the muscles. Activities such as daytime clenching of the teeth and bruxism, habits of chewing gum, biting lips, finger nails or cheeks are factors that cause significant strain on the masticatory muscles and temporomandibular joints.

Inclusion Criteria:

(i) good general health, with no craniofacial trauma in the last 5 years and without severe mental conditions (ii) the presence of TMD symptoms (pain in the masticatory muscles, limitation of mouth opening range, clicking or popping in the temporomandibular joints. For control group there was absences of these symptoms.

(iii) consent of the patient to participate in the research project

The exclusion criteria for the study were:

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Exclusion Criteria:

(i). willingness to resign out of the study.

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Population of Patients of University Clinic