Analysis of the stress-strain state of a digital model of a reconstructive lyophilized allogeneic bone implant with the change in its design features

Abstract

BACKGROUND: The favorable outcome after the restoration of bone loss in the jaws depends on many factors. Thus, one of the key factors is the data on the mechanical and biophysical characteristics of the used bone implants, ignorance of which often jeopardizes the successful treatment of dental patients. AIM: To carry out a comparative experimental analysis of the stress-strain state of a digital model of a reconstructive lyophilized allogeneic bone implant with a change in its design characteristics. MATERIALS AND METHODS: To determine the biomechanical indicators of integrity preservation, the analysis of the stress-strain state of mathematical models of a reconstructive cylindrical implant and a reconstructive implant made of lyophilized allogenic material was carried out under equal conditions using the finite element method. RESULTS: As a result of the analysis of the stress-strain state of digital 3D models of reconstructive bone implants of two types, stress distributions according to von Mises (equivalent stresses) caused by the action of given loads were obtained. During the study, data on the margin of safety of reconstructive implants were obtained. CONCLUSIONS: The capabilities of modern computer software make it possible to expand the possibilities of bone augmentation of the alveolar bone tissue of the jaws with simultaneous dental implantation, allowing analytically to find the optimal parameters of the used materials, to choose the magnitude and direction of force during their installation, and also to predict their behavior in the postoperative period.