[Modern methods of adhesive fixation of facial epitheses]. / Sovremennye metody adgezivnoi fiksatsii epitezov litsa.

This review presents an analysis of domestic and foreign literature on the issues of fixation of facial epitheses and combined maxillofacial prostheses, such as the use of craniofacial implants installed in the zygomatic bone, brow arches, orbital walls, mastoid process of the temporal bone with beam or magnetic beam fixation systems. The advantages and disadvantages of such fastening systems are described. The analysis and systematization of available data on medical adhesive compositions that can be used in maxillofacial prosthetics to hold facial epitheses has been carried out. Much attention is paid to the chemical composition of pressure-sensitive adhesives, water-based and silicone-based. Examples of such compositions are given. The physicochemical properties of medical adhesive systems that cause adhesive-cohesive interaction are described. This review presents the results of comparative studies to assess the fixing properties of various adhesives, as well as to study the formation of biofilm on the surfaces of prostheses and skin when using different adhesives.

[Development of structural material for the manufacture of facial prosthesis by 3D printing]. / Razrabotka i otsenka fiziko-mekhanicheskikh svoistv konstruktsionnogo materiala, primenyaemogo v tekhnologii proizvodstva epitezov litsa metodom ob"emnoi pechati.

THE AIM OF THE STUDY: Was to develop and evaluate the physical and mechanical properties of a structural material for the manufacture of facial epithesis using photopolymer printing technology. MATERIALS AND METHODS: The study of the physical and mechanical properties of the developed structural material consisted of measuring the Shore hardness; determination of material strength at break, conditional yield strength, relative elongation at break and modulus of elasticity; the study of the characteristics described above, after artificial aging, simulating the daily use of a prosthesis. RESULTS: According to the test results, the samples of the studied material did not have a yield strength, they were torn at a deformation of 40-60%. The values of the conditional yield strength were 0.41±0.01 MPa, regardless of the time of the aging procedure. The values of the modulus of elasticity were 2.96±0.19 MPa and 2.88±0.14 MPa for the samples that underwent the aging procedure at 6 and 12 months, respectively. CONCLUSION: The results obtained were compared with the results of similar studies of structural materials used in 3D printing technology of facial prostheses, which allowed us to recommend the developed material for clinical use after evaluating its toxicological and biological characteristics.