| Issue |
BIO Web Conf.
Volume 237, 2026
2026 8th International Conference on Biotechnology and Biomedicine (ICBB 2026)
|
|
|---|---|---|
| Article Number | 03012 | |
| Number of page(s) | 6 | |
| Section | Biomaterials, Medical Devices and Biomedical Engineering | |
| DOI | https://doi.org/10.1051/bioconf/202623703012 | |
| Published online | 10 June 2026 | |
Simulation Analysis of Stress Corrosion and Passivation Behavior on Micro-Defects of Dental Bone Implants
1 Beijing University of Technology, College of Mathematics, Statistics and Mechanics, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
2 BONRANGE NeoMaterials Co., Ltd., No. 28 Yuhua Road, Zone B, Tianzhu Airport Economic Development Zone, Shunyi District, Beijing, 101318 China
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
This study constructed a coupled mechanical-electrochemical finite element model of Ti-6Al-4V dental implants considering surface micro-defects, and systematically analyzed the corrosion evolution under the combined effects of oral load and body fluid environment. The results show that preloading leads to stress concentration at the center of micro-defects, with the edges acting as anodes and preferentially dissolving, forming lateral corrosion propagation. A strong passivation film significantly inhibits the anodic reaction and reduces stress release efficiency. Oxygen concentration regulates passivation film formation, and a low-oxygen environment helps slow the overall corrosion rate. The model effectively reveals the corrosion mechanism of implants under complex environments, providing a theoretical tool for implant life prediction.
© The Authors, published by EDP Sciences, 2026
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