Mammadova S.
Doctor of Philosophy in Medicine
Arkhmammadova G.
Department of Orthopedic Dentistry.Assistent
Hasanova V.
Department of Orthopedic Dentistry assistant
Azerbaijan Medical University,
Baku, Azerbaijan

Abstract
It is known that the oral cavity is a unique ecological system, closely connected with the internal environment of the body and its external environment. The high incidence of damage to the oral cavity is largely due to the peculiarities of its structure and function, constant contact with the external environment, the presence of microflora, and a variety of loads [1,2,5,7]. When making a denture, it is necessary to take into account the characteristics of the dental and somatic status, as well as the microecology of the oral cavity of patients [3,4,b,8]. The choice of construction material is carried out based not only on its physicochemical characteristics, but also on the biological effect on the surrounding tissues of the oral cavity. In recent years, there has been a significant increase in the number of diseases of the oral mucosa caused by the use of various dentures.

 Keywords: metal-ceramic bridges, stainless steel alloys, microecology of the oral cavity.