UDC 611.716-053.8-073.75

Radiographic examina琀椀on of the facial skeleton enables the assessment of symmetry in complex anatomical regions and facial bone structures, helping to elucidate causal rela琀椀onships between asymmetry and func琀椀onal disturbances that may lead to the onset and progression of pathological changes in anatomically or func琀椀onally related organs and systems. This study, aimed at determining the frequency of facial bone structure asymmetry detected by radiographic examina琀椀on, was conducted using 100 panoramic radiographs of the maxillofacial region from randomly selected
adult individuals. The frequency of asymmetry in various facial skeletal structures among adults of di昀昀erent sexes was established
and compared based on radiographic data.
It was found that a comprehensive analysis of the interrela琀椀on between all manifested types of asymmetry in the studied structures – along with clari昀椀ca琀椀on of the sequence of the observed changes – requires an in-depth inves琀椀ga琀椀on into the age-related remodeling pa琀琀erns of the facial skeleton and tracking of individual changes over 琀椀me, beginning from childhood. The data obtained con昀椀rm the 昀椀ndings of other researchers, signi昀椀cantly expanding knowledge about facial asymmetry manifesta琀椀ons at di昀昀erent life stages. These 昀椀ndings are clinically important, as
they enhance understanding of the causes of facial asymmetry and provide a founda琀椀on for developing e昀昀ec琀椀ve
methods of preven琀椀ng its progression and the development of associated secondary changes and pathological condi琀椀ons.
Key words: symmetry, asymmetry, facial skeleton, maxillofacial region, radiological diagno

UDC 616.314/.716.1-001-085:616.15 

 Restoring the connection between the tooth and the periodontium is the primary goal of complex treatment, which involves the formation of new bone and cement, restoring the periodontal ligament and blood supply to the pulp from the surrounding tissues. The study aimed to investigate the effect of platelet-rich plasma as a medium for temporarily storing a dislocated tooth on the regeneration and reconstruction of its tissues after replantation of an extracted tooth compared to saline and water. In this study, 30 adult male Wistar rats were used, and a tooth was extracted and then replanted. A fibroblast cell activity analysis was performed after 72 hours to determine cell viability. Cells incubated in platelet-rich plasma medium had a higher percentage of cell viability (82.7±5.1), followed by saline (74.3±4.2) with statistical significance (p>0.001). The minimum percentage was recorded in cells in the medium with tap water (68.8±3.9). The pulp, dentin and cementum of the group where the teeth were placed in platelet-rich plasma showed normal histological features, demonstrating optimal tissue remodelling and attachment to the surrounding bone. There were no signs of root resorption. In summary, this study used several temporary storage procedures and evaluated changes in histological events that occurred during the storage of extracted teeth and replantation until the time of recording of the success of the replantation. The study's results indicate the use of platelet-rich plasma as a storage medium, as it significantly preserves the viability of dental cells compared to water and saline solutions.

Key words: teeth dislocations, tooth replantation, permanent teeth, platelet-rich plasma, traumatic injuries of the maxillofacial area.