The subject of the study is the importance of molecular genetic research methods in the study of the etiopathogenesis of osteomyelitis of the jaws. The purpose of the work is to provide up-to-date information to researchers, dental surgeons, and maxillofacial surgeons on the possibilities of molecular genetic research in identifying bacterial pathogens in osteomyelitis of the jaws, as well as to reflect genetic markers of pathogenicity factors for a number of the main causative agents of the disease. Methodology. International scientific databases PubMed, ScienceDirect, Scopus, Cochrane Collaboration, Elsevier, as well as electronic catalogs eLIBRARY.RU and CyberLeninka.ru were used. Results. A review of publications demonstrated that S. aureus and S. Epidermidis dominate the etiological spectrum of causative agents of bone tissue infections. The participation of these microorganisms is determined by a whole range of pathogenicity factors. Toxins and Panton-Valentine leukocidin (PVL) genes play a major role in the pathogenesis of osteomyelitis and disease progression. It has been shown that the pathogenic bacteria Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans are capable of inducing differentiated production of cytokines. The most attention has been attracted to E. faecium, which exhibits multidrug resistance to a wide range of antibiotics. The proportion of infections mediated by S. epidermidis and S. Saprophyticus is, on average, about 25% of cases. The proportion of representatives of gram-negative flora Escherichia, Klebsiella, Enterobacter, Citrobacter, Proteus, Providencia, Serratia reaches 23% of cases. Pathogenic nosocomial strains of P. aeruginosa are also involved in the formation of chronic inflammation in osteomyelitis. According to the results of published studies, more than a third of cases of chronic osteomyelitis are mediated by microbial associations, which are dominated by S. aureus, S. epidermidis and, less commonly, E. faecalis. Conclusions. The use of PCR analysis to identify the causative agents of osteomyelitis and gene amplification using specific primers has a huge advantage over routine microbiological tests, being an informative method for studying the pathogenicity factors of the main pathogens. The high importance of molecular genetic methods in the study of the etiopathogenesis of osteomyelitis of the jaws requires their widespread use in the clinic of surgical dentistry and maxillofacial surgery to successfully solve complex problems in the rehabilitation of patients with this disease.