Ekaterinburg, Ekaterinburg, Russian Federation
employee from 01.01.1992 until now
Ekaterinburg, Ekaterinburg, Russian Federation
Tyumen, Ekaterinburg, Russian Federation
Ekaterinburg, Ekaterinburg, Russian Federation
Subject. Currently, tooth loss prosthetics using implants are widely used. An important problem is the loss of bone tissue due to infections around the implant. Micro-gaps at the implant-abutment interface can contribute to infection with microorganisms.The aim of this study was to investigate the precision of connecting the implant-abutment components with simultaneous loading and temporary restoration. Methodology. The precision of the "implant – abutment – artificial crown" connection was studied on a clinical case with simultaneous removal of a tooth root, followed by implant placement and temporary restoration. Before installing the implant, specialized programs combined a three-dimensional CT model of the jaw with a 3D model of the dentition obtained as a result of scanning. To study precision, a duplicate plastic crown was made according to this virtual plan and fixed in a similar implant. The "implant-crown" model was fixed in plaster and a section was made up to the level of the "implant-abutment-artificial crown" connection, which was studied using electron microscopy at magnification of 50, 100 and 200 times. Results. Electron microscopy data showed that the junction of the internal surface of the implant with the plastic "abutment" had a gap width in the range of 54-77 microns. Conclusion. The exact fit of the restoration on the implant was confirmed by electron microscopy. In the presented example, due to the production of temporary restoration, it was possible to reduce the number of manipulations with the implant-abutment components. Modern milling and 3D printing technologies show high precision.
implantation, immediate loading, implant template, precision, electron microscopy
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