Abstract

This study evaluated and compared the corrosion effects of Streptococcus mutans (S. mutans), Candida albicans (C. albicans), and their mixture on implant materials Ti and Ti-Zr. Corrosion tests were conducted in simulated artificial saliva. The results showed differences in biofilm structure, corrosion behavior, and mechanisms between single and mixed bacteria. The cross-kingdom interaction between S. mutans and C. albicans enhanced biofilm maturity and acidity, providing necessary conditions for pitting corrosion. C. albicans played a dominant role in the interaction between C. albicans and S. mutans. Furthermore, Ti-Zr exhibited higher corrosion resistance compared to Ti.

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