MORPHOLOGICAL STUDIES OF THE REACTION OF ANIMAL TISSUES TO THE IMPLANTATION OF A CERAMIC INLAY IN DENTAL PROSTHETICS

Abstract

Modern orthopedic dentistry is moving towards improving various technologies of prosthetics with metal-free ceramics. One of the most important directions in dental research of the 21st century is the improvement of metal-free structures. The aim of the research was to determine the bioinertness of the inlay material, which can be used in prosthetics with dentures based on frameless ceramics. Materials and methods of research. Morphological study of the skin of white Wistar rats was performed after intradermal implantation of alloys: Weron 99, Wirocer, Wirobond, IPS e.max Press ceramics. Studies were conducted on rats to assess the degree of impact on surrounding tissues when implanting samples of basic materials used to make inlays in the clinic. A study of the skin of rats after implantation of the Wirocer alloy determined the preservation of a clear demarcation between the epidermis and the dermis. A study of the skin of rats that were implanted with the Wirobond alloy determined a clear demarcation between the epidermis and the dermis. The papillae are shallow and located at considerable distances from each other. The cells of the expanded basal layer are arranged rather disorderly, the nuclei of some of them are enlarged, the nuclei of others are small, all the nuclei are darkly stained. A study of the skin of rats with the implantation of ceramic elements JPS e.max Press determined changes in the epidermis and dermis. The demarcation of the epidermis and dermis does not change. In the epidermis, a thickening of the basal layer is observed in some areas. Conclusions. The results obtained indicate that intradermal implantation of alloys: Weron 99, Werocer, Wirobond and IPS e.max Press ceramics is accompanied by unidirectional dystrophic changes in the epithelium and dermis of the skin of experimental animals, however, when implanting ceramics, these changes are less pronounced, which indicates a more significant bioinertness of ceramics when introduced into the tissues of the oral cavity of experimental animals.