
DESIGN OF SPECIALIZED SURGICAL SCREW INSERTED IN PLATE TYPE CERVICAL IMPLANT
Author(s) -
Krasimira Dimova,
Georgi Todorov,
Yavor Sofronov
Publication year - 2021
Publication title -
proceedings of cbu in natural sciences and ict ...
Language(s) - English
Resource type - Journals
eISSN - 2695-0766
pISSN - 2695-0758
DOI - 10.12955/pns.v2.146
Subject(s) - implant , finite element method , surgical procedures , biomechanics , biomedical engineering , materials science , biocompatible material , orthodontics , medicine , surgery , engineering , structural engineering , anatomy
In the field of Implantology the screws are an important part because they transfer the loads that occur in the bones. Surgical screws are similar to those in Mechanical Engineering, but the materials should have specific characteristics like biocompatibility, strength, corrosion resistance and fatigue strength. The main function of the surgical screw is to create pressure between two bones which is necessary in order to heal the injured bones. The surgical screw transforms all forces of the movements to pressure and distributes the pressure on the bone’s surfaces. Surgical screws can help in the setting of implants into an injured area. It also ensures static position of the injured bones. The research aims to analyse how the surgical screw type affects the bone of the patient with the help of the Finite Elements Method (FEM). Based on the results from the analysis of the surgical screw a new specialized surgical screw was designed with complex geometry to withstand the occurring loads and also be able to transfer them to the bone tissue. In additional, a comparison analysis between two different types of surgical screws was conducted. This paper shows how a surgical screw could be optimized in order to improve its function with the help of virtual tools. Finally, the materials used are biocompatible and often used for such screws and surgical implant analysis, the challenge was to recreate the bone tissue properties and to used them in the FEM analysis.