DETERMINATION OF BONE TISSUE DENSITY IN SURGICAL TREATMENT OF ATROPHY OF ALVEOLAR PROCESS OF THE UPPER JAW AND THE PART OF THE LOWER JAW IN POSTMEN-OPAUSAL WOMEN

Introduction. Measurement of bone density on the basis of cone-beam computed tomography data is considered reliable, because in this method the measurements are performed on the basis of an objectively calibrated Hounsfield scale. According to the researches' data it was determined that bone density can be variable, which could be due to the different age and gender of the research participants, and the presence of osteopenia or osteoporosis. The aim of the research – was to assess the bone density of the upper and lower jaws in postmeno-pausal women with osteopenia before and after the surgi-cal treatment of jaw bone atrophy using osteoplastic material and ossein-hydroxyapatite compound. Materials and methods of the research. There were observed 63 postmenopausal women with osteo-penia, aged from 50 to 59 years. All CBCT data was viewed using One Volume Viewer and then exported using SIMPLANT 11.04 software. Then, using the soft-ware SIMPLANT 11.04 there was performed the estima-tion of bone density. Since the aim of our research was to determine the density of bone tissue before surgical inter-vention using osteoplastic materials without dental im-plants' insertion, based on the options of this software there was virtually performed the planning of dental implants' insertion, which afterwards allowed us to de-termine the density of bone tissue in this area. Results of the research and their discussion. When determining the density of bone tissue in patients of group I before surgery, the average value of bone density indices was 434.25±123.11 (p˂0.05) units of Hounsfield. At the same time, measuring of bone density indices in patients of group II before surgery was 395.45±76.21 units of Hounsfield. In experimental group III, bone density indices before surgery were 579.87±98.43 units of Hounsfield. The increase in bone density was the largest in group I, where all patients be-fore surgery were prescribed ossein-hydroxyapatite com-pound. In groups II and III, the research of the dynamics before the increase in bone density was not observed. In the process of taking ossein-hydroxyapatite compound in patients there were no adverse reactions that would require medicine cessation or change of dose. Also in the postoperative period in patients of group I were fewer complications compared to other research groups. Conclusions. The results of the research re-vealed a high efficiency of the use of ossein-hydroxyapatite compound in the surgical treatment of bone atrophy of the jaw bone in postmenopausal women with osteopenia. The influence of ossein-hydroxyapatite compound on the change of bone density indices on the basis of bone density indices in group I in comparison with II and III research groups was determined. The use of osteoplastic material in combination with the ossein-hydroxyapatite compound during surgery stabilizes the processes of atrophy of the bone tissue of the alveolar process of the upper jaw and part of the lower jaw in postmenopausal women.