Subject. The relevance of the study is associated with the widespread prevalence of diseases of the temporomandibular joint and masticatory muscles. The large amount and inconsistency of literature data, the lack of generally accepted terminology and diagnostic criteria, and the variety of treatment methods proposed by various authors lead to difficulties in the choice of treatment tactics encountered by the dentist in everyday practice in treating patients with temporomandibular joint pathology.
The goal is to study the available literature data on the prevalence and structure of clinical manifestations of functional disorders of the temporomandibular joint.
Methodology. The study was conducted on the basis of a search and study of scientific publications on the epidemiology of clinical manifestations of functional disorders of the temporomandibular joint in the databases PubMed, eLibrary, Scopus, Web of Sciens, Medline. The selection of materials was carried out by keywords.
Results. The review presents the scientific data of various authors on the epidemiology of the clinical manifestations of dysfunctional disorders of the temporomandibular joint. The most characteristic objective signs of the temporomandibular joint dysfunction syndrome are: “noise” phenomena in the joint during movements of the lower jaw, pain during palpation of the masticatory muscles, restriction of opening of the mouth, deviation during opening of the mouth, bruxomania, displaced position of the lower jaw relative to the upper (transverse, medial distal), the presence of otological symptoms (pain and / or a feeling of stuffiness in the ears), a burning sensation, tingling, tingling, or pain in the tongue.
Conclusions. A study of the literature over the past 15 years has revealed a wide variation in the prevalence of clinical manifestations of functional disorders of the temporomandibular joint, which does not allow an unambiguous conclusion about the epidemiology of its dysfunction.