Vol.23, No.1, 2023, pp. 65–69
UDC:

Currently, implant-supported prosthetics are widespread in dental practice. However, this type of treatment has a number of features, namely the attachment of the crown of the tooth to the implant. The aim of this work is to study the degree of axial displacement of abutments made by different methods in comparison with implants and their analogues. The study was carried out on implants and analogues of MIS C1 (conical connection), standard platform. The following types of abutments are chosen: standard transgingival abutments, milled, cast, SLA - abutments (selective laser sintering). The task was to study the change in the height of the abutment on the analogues depending on the tightening torque of the fixing screw, as well as to study the change in the height of the abutment on the implant under chewing load. The results on analogues revealed axial displacement on original abutments 92-109 m, on milled abutments 104-129 m, casting abutments 66-93 m, in SLA abutments 55-78 m. Results on implants showed axial displacement on original and milled abutments 1-2 m, weak abutment 2-7 m, and cast abutment 2-12 m. The design of the implant-supported prostheses requires attention to the height of the structure. When modelling on analogues, the peculiarities of axial displacement of each type of abutment should be taken into account. Axial misalignment of the implants indicates that SLA and cast abutments are unreliable. Priority should be given to original products and milled abutments.  

Keywords: axial displacement, implant, abutment, conical connection, simulation complex