Comparison of Raw Materials Used in Customized Implant Systems through Finite Element Analysis and Dynamic Fatigue Testing

Abstract

Customized implants offer many advantages in medical implant applications. Material selection from the limited biocompatible material choices plays a crucial role in the success of the treatment. In this study, we compare the results obtained from dynamic fatigue testing and finite element analysis of raw materials planned for use in personalized implant systems which were made possible by the advancements in production technologies and their widespread adoption in the medical sector. The study first discusses the concept of customized implants and the materials necessary for these implants. Multiple test samples were then produced using subtractive and additive manufacturing methods according to specified dimensions using the selected materials. Static and dynamic tests were applied to the produced samples. The cobalt-chromium alloy demonstrated the highest rupture value (5.9 kN) in static tests; furthermore, it exhibited the highest value (562,189 cycles) when the rupture cycle was analyzed in dynamic tests. The results from these tests were evaluated in terms of materials and manufacturing methods. Based on the evaluations, CoCr was identified as a more durable material, and in terms of manufacturing methods, parts produced by subtractive manufacturing were found to be more durable.

Keywords

• Customized Implant
• Material
• Finite element analysis
• Fatigue testing

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