Prediction of stress shielding around implant screws induced by three-point and four-point bending
| Autor: | Mohd Shukry Abdul Majid, M. A. Rojan, Mohd Yazid Bajuri, Nor Alia Md Zain, Izzawati Basirom |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Mathematics General Physics and Astronomy Strain energy density function 030206 dentistry 02 engineering and technology General Chemistry Bending Stress shielding 021001 nanoscience & nanotechnology General Biochemistry Genetics and Molecular Biology Stress (mechanics) 03 medical and health sciences 0302 clinical medicine Fracture (geology) Implant Deformation (engineering) Composite material 0210 nano-technology General Agricultural and Biological Sciences Elastic modulus |
| Zdroj: | Malaysian Journal of Fundamental and Applied Sciences. 15:548-554 |
| ISSN: | 2289-599X 2289-5981 |
| Popis: | Implant screws failure commonly occurs due to the load that constantly generated by the patient’s body to the fracture area. Bending load is often encountered in femur bone due to lateral impact which affected the bone and also the implants installed. Consequently, the load will lead to the failure of implants that can cause loosening or tightening of implants. Henceforth, in this manner, it is significant to study the bending behavior of bone implant in femur bone. The aim of this study was to analyze the stress shielding of bone implant on the internal fixator. 3D technique is able to show the overall deformation and stress distribution. The lower the biomechanical compatibility, the lower the STP value obtained. In addition, the variation of elastic modulus (E) of the screws materials, 200GPa (Stainless Steel) and 113.8GPa (Titanium) resulted in the increase of the total stress transferred (STP) between screw and bone interface. In this work, strain energy density (SED) was determined as a good indicator of stress shielding. |
| Databáze: | OpenAIRE |
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