THE CONCEPTS OF DYNAMIC OCCLUSION IN MANUFACTURING OF IMPLANT-SUPPORTED COMPLETE REMOVABLE DENTURES: LITERATURE REVIEW

The main chewing load is concentrated in the areas of occlusal working contacts by means of reflex coordination of muscular activity in the presence of intact dentitions. Proprioceptive sensitivity of periodontal tissues regulates the contraction of the chewing muscles which leads to a chewing load on the teeth. A decrease in proprioceptive sensitivity due to the lack of periodontal ligaments is observed in case of completely absent denti-tion or applied intraosseous dental implants. The article presents a review of the literature on the choice of dynamic occlusion concepts in the manufacturing of complete removable prostheses supported by intraosseous implants. In the course of prosthodontic treatment of the patients with completely absent dentition, incorrectly constructed occlusal scheme leads to prosthetic restoration and implantation, the development of pathological processes in the masticatory muscles, temporomandibular joint dysfunctions (TMJD). Static and dynamic occlusal relations should be taken into account in order to provide aesthetic requirements and maximum efficiency of the masticatory system. In the manufacture of orthopedic structures based on implants, the criteria of static and dynamic occlusion are taken into account to ensure aesthetic requirements and maximum efficiency of the chewing apparatus. Gnathology is a multidisciplinary science. Therefore, all elements of stomatognathic system should be considered when choosing an occlusal concept. The main modern occlusal concepts used for the analysis and restoration of the occlusal relations of jaws with com-pletely absent dentition are based on the principles of functional occlusion. Based on the analysis, the ad-vantages and disadvantages of the most common occlusal concepts were described, namely cuspid guidance, unilateral balanced occlusion, bilateral balanced occlusion, lingualized occlusion. Analyzing publications in ukrainian and foreign scientific periodicals, medical internet resources (Pub-Med, Google Scholar and other worldwide medical inter-net resources), monographs of ukrainian and foreign gnathologists, dissertations, books on the study of the concepts of dynamic occlusion, we may conclude that there are differences in the interpretation of the feasibility of using a particular concept. It can be concluded that the development of in-dividualized approaches to the formation of the occlusal concept is relevant on the basis of the objective data obtained from the researche of the organs of the stoma-tognathic system. After reviewing the publications of domestic and foreign scientific sources, we can conclude: there are a large number of scientifically proven concepts of dynamic occlusion. Each of the concepts has many advantages and disadvantages. There is a bias in the results of research, giving preference to those concepts that are characteristic of the gnathological school of research authors. When discussing the benefits of selected concepts, there are a small number of references to long-term results. It is important to develop an individualized approach to the choice of the concept of occlusion, taking into account the state of the functioning of the dental- maxillofacial apparatus in general and in the specific clinical case. In the future, the development of static and dynamic connections is a priority for the highly aesthetic and functional result of orthopedic treatment of patients with complete absence of teeth on the upper and/or lower jaw.