Abstract
Functional pathology of chewing structure in the form of malfunction of temporomandibular joint and parafunctions of chewing muscles are common. This is due to early tooth loss in people of young and middle age. In adults, the prevalence of this type of violation is from 12 to 75%. But persons, who have occupational hazards, have a frequency of occurrence 95–100%. Despite the fact that the study of the dental status of military personnel of the Navy was carried out repeatedly only a few studies paid attention to the identification of functional pathology of temporomandibular joint and chewing muscles and usually paid attention to a small sample of subjects. The possibilities of diagnosing and treating such diseases on ships of the Navy are severely limited because of lack of dental equipment, inaccessibility of X-ray examination. It should be noted, that reporting on dental morbidity in the system of the Ministry of Defense of Russia also doesn’t take into account this pathology. However, it is known that there are certain difculties in the treatment of patients with malfunction of temporomandibular joint and parafunctions of chewing muscles, which often recur and constant arthralgia or myalgia may adversely affect the performance of military duties, especially in the conditions of a long hike.