MORPHOMETRIC AND RADIOLOGICAL ASSESSMENT OF REPARATIVE OSTEOGENESIS DEPENDING ON THE COMPOSITION OF OSTEOPLASTIC MATERIAL IN OPEN SINUS LIFT SURGERY

Introduction. Open sinus lift is a critical stage in preparation for dental implantation, requiring the optimal selection of bone chips material to ensure high-quality reparative osteogenesis. The relevance of the study is determined by the need to comparatively evaluate the effectiveness of various bone plastic materials, taking into account their impact on morphological and radiological parameters of bone regeneration. The aim of the study is to conduct a comparative evaluation of the effectiveness of three types of bone plastic materials in open sinus lift, using morphometric and radiological analysis of reparative osteogenesis 180 days after surgery, to identify the optimal composition of the material for augmentation prior to dental implantation. Materials and methods. The study analysed three options for filling the subantral space: pure xenogenic material «Cerabone» (100 %), a mixture of 25 % «Cerabone» + 75 % autologous bone, a mixture of 50 % «Cerabone» + 50 % autologous bone. The work was based on trepanobiopsies of bone tissue from 30 patients (10 people in each group). The comprehensive assessment included measurement of the volumetric fraction of mineralised bone (BV), counting the number of osteoblasts (N.ob), analysis of the contact area between bone and material (MatBS/BS), radiological assessment (height, density, volume of augmented bone). Results and discussion. It was found that a combination of 50 % «Cerabone» and 50 % autologous bone graft provides the maximum increase in bone mass, high density of the regenerate and better material integration, making it the optimal choice for augmentation prior to dental implantation. The difference in the dynamics of osteogenesis confirms the importance of selecting the optimal ratio of xenogenic material and autologous bone to achieve maximum effectiveness of the sinus lift. Conclusions. The study proved that a combination of 50 % «Cerabone» and 50 % autologous bone shavings is the most effective solution for augmentation in open sinus lift. This material composition ensures quality regeneration of bone tissue, high density and volume of augmented bone, reliable integration of the osteoplastic material, optimal conditions for subsequent dental implantation.